572 2dr tahoe

[97'hoe350]

hey anyone know anyone who has put a 572 in a 2dr tahoe? and would it make emitions? i have heard yes and no on this subject:dunno:

thanks,
97' hoe

[nebraskaz71]

no clue but it soudns fun

[GreenMonster93]

why not just put some good cats and detune a bit and it should be fine a set of good magna flow cats should work ... i have not herad or seen anything else that would not allow u to do that ...

[98GreenMachine]

hey anyone know anyone who has put a 572 in a 2dr tahoe? and would it make emitions? i have heard yes and no on this subject:dunno:

thanks,
97' hoe

So I have to ask, do you have a 572 laying around?

[DefEddie]

Yeah it's been done,but it was a twin turbo on a 4dr IIRC.
Passing emission's would totally depend on the state law's in question and how you did the swap.
As long as it retain's all emission's control's and is fuel injected then you should have no problem as long as the state allow's it and you keep track of your CARB and EOE? number's.

[97'hoe350]

"So I have to ask, do you have a 572 laying around?"
-98GreenMachine

no, but i am thinkin about savin up for one. but on a school/work budget it would take a while. my tahoe is a father a son project, so its gonna take while to get it done. but i just got in a lowering kit and im upgrading my wheels and tires, breaks, and i just got it painted. (took the gold stripe off the bottom) so i was just wonderin if i could do it without much trouble (before i got my hopes up). by the time i get around to an engine up-grade they should have a good stock of used ones on ebay. lol. hey anyone got any pics of the truck that had the tt 572 stuffed in the 4dr? that must be a sick ride!

[Chuggs]

I could've sworn there was a silver and black two tone two door with a 572 featured in one of the magazines a while back. :think:

[97'hoe350]

wat mag? ya know?

[Chuggs]

It took some digging, but I found the truck that I was thinking of. It was actually the cover truck on the June '99 issue of Truckin'. It's just like I remembered, black and silver with wicked graphics up the side, but unfortunately, it only had a 502 not a 572. If I had a scanner here, I'd post it, but I don't. :sorry:

[g9m3c]

If I were you, I would forget saving up over $10,000 for a 572, at least I think they cost that. For an affordable big numbers powerplant, I would opt for the ls1 crate engine, I saw a few days ago that you can get one for under $4,000 now, and add 6 more grand to that puppy, and you would be well past your horsepower goals and probably have a better chance at passing emissions at the same time.

[nebraskaz71]

word on the 1200+hp 408 hehe

[97'hoe350]

If I were you, I would forget saving up over $10,000 for a 572, at least I think they cost that. For an affordable big numbers powerplant, I would opt for the ls1 crate engine, I saw a few days ago that you can get one for under $4,000 now, and add 6 more grand to that puppy, and you would be well past your horsepower goals and probably have a better chance at passing emissions at the same time.

good point, but its just somthin about a huge big-block that makes the shivers go up my spine. and while im here, if i do it what tranny should i use? and should i box the frame?

[g9m3c]

Beefed up 4L80E. And the frame boxing depends on what your gunna be pushing torque-wise, any more than 450 to 500 ft. lbs. and I would definitely do some frame strengthening, whether that be boxing or adding an x-member or whatever. Sounds fun! :drool:

[97'hoe350]

ya, wen i do it. im still in school. quote from dad "you wont be doing that while that truck is in my name" or "you wont pass emitions with a big block crate engine" i am determined to prove him wrong on the emitions part. but also i plan on puttin push-button exhaust cut-outs on it. anyone done that? dont think i will ever be done with this thing, always comming up with new ideas for it. lol. and to chuggernaut dont worry about it dude. but it sounds like a kick ass truck. and in the engine bay, do ya think im gonna have any huge issues as far as space? i plan on tryin to lay frame on 22's (while keeping the 4wd functional) so im probably gonna be tubbin the front inner fenders. so i dont know if it will fit

[DefEddie]

If you lay frame on 22's in a 4wd OBS with a 572 in it then I will drive across the country to see that bad ride.
Not that it can't be done,but you can jack the price wayyy up.
Lowering a 4x4 and retaining a good geometry isn't really a problem,but bagging a 4wd and keeping it functional use's part's of the frame that would be taken up by motor I think.
Not that it can't be done,just saying it will be a huge project and I would definatly not want it to be my first large project.
If you decide to do it definatly post up build info and stuff,I'd love to see one if there isn't one already.
I like a more functional ride,if I had that I sure wouldn't be driving it much. If I did I would hate to take advantage of the torque.
The entire truck would need stripped and reengineered probably to do it right and actually utilize the power.
Sound's like fun,now I want someone to do it.

My advice to a new trucker would be to start slow and when someone tell's you not to do something then either don't or educate yourself completely in your decision. I would start slow,like first maybe mod what you already have while keeping what you want in mind. You can build it slowly over time,and do big thing's after you get another vehicle to drive.
Trust me,for the big stuff don't fool yourself into thinking it will get done in a weekend unless your really good and have really good friend's.

[97'hoe350]

i agree. with you totally. im not gonna be doing this for a little while (i am broke :aniteef:) at least untill im 18 and moved out. this truck will be a life-long project for me and my dad. but the reason behind the madness is, well, to be the only one out there that has done it. i love looking at cars and trucks and wondering "how the hell did they pull that off?!" and also to prove to all that say i can't that i did. finally i want it to be the "ultimate" nothing less. man i have high standards. lol. i think that you will end up driving across the country my friend, to see the badest tahoe in the world. but that wont be for a little while. i will keep you posted though on my progress. just got the 3-3.5 lowering kit for it, for starters. got some escalade 17" to start with but i plan on gettin the
22's soon. ill give ya the link to check out what im lookin at.

From now on, i will call her project "ultimate". lol. for now she wont be that ultimate though. lol. ill keep ya posted. and get some pics as soon as i get the 17's and the lowering kit on her.

thanks,
proud owner of project "ultimate" lol:cool:

[DefEddie]

Definatly check out that link I sent you,depending on when you get the 22's I might take those esky's off your hand's.
I've already got the front lowering component's on my 2dr,just waiting on time and the temp outside to cool down so I can do the rear.
If your pumped about doing the torsion key's yourself I would rethink it unless you have a lift or someone experienced in 4x4 torsion bar's.
The tool is almost essential,though you can get by fine with a 2 jaw puller if you don't mind living dangerously(don't do it)
I've yet to even adjust mine down since I took them out.
FYI,after you pull the stock key's you can sell them on here to someone with a NBS that want's to lift it.

[97'hoe350]

the link to the 22's im thinkin about gettin is http://www.centerlinewheels.com/wheels_detail.php?mw_id=1&sw_id=358 i picked up the lades' for $200 with tires they only had like 100 miles on em. it was a steal. but i got some stock hoe wheels on some (very very used) stock f-250 tires (they are like 2 inches smaller than the stock hoe' tires.) the backs tires are just barely legal and the fronts have the metal showing. so the tires are shot but the wheels are like new. no curbing no nothing. so if ya know anyone who will need em in like say... a couple months. not gonna put the lades on until i get the front end allined (it is all out of whack)

[Busted Knuckles]

When you compare the hp/tq numbers from the 572 to other crate engines, it's not that impressive. The intake runners are only 310cc's, that's not nearly enough for that size engine. You'll be dealing with header and other tall deck issues that get expensive quick. A well built 540 will make more hp/tq, built on a short-deck platform. Shoot, a well built 496 will make more hp/tq than you'll ever have need for and blow the tires off at the blip of the throttle and can be built for half of what GM wants for the 572. Forget a warranty - if you ever race it, even a street stoplight race, the warranty is void.
Plan to invest a ton in tranny, rearend and suspension as well. Big-inch engines tear crap up and are great for finding your weak links.
I've never seen one of the big-inch engines that would pass emissions, they'd need at least a 1050 Dominator or a high $$$ fuel injection system to supply enough fuel and keep from burning pistons due to lean conditions. Drive behind somebody with a Dominator sometime - after a few miles, your eyes will burn and you'll see what I mean.
Don't hang your hat on being the only or first to do it. There are a lot of folks out there with scad of cash that build some insane stuff!

[97'hoe350]

ya know of anyone who has put a 572 in any late model trucks? i'd like to know what state they are from. washington has pretty average standards for emitions, figured i would try to get ahold of a guy who is an emitions tester. think my dad knows one. i'll ask him if he thinks it could pass. as far as y i am doing this, it is because it is different! some things that are different might not be the best things out there, but thats ok. take rat rods for example. they are just expressions of people's personality. some of them might not be the fastest things out there or the "nicest" out there but the owners love them as much as a guy that spent 2 mill on a hot rod or something. thats what cars are, an extention of their owners. and thats what min will be too. so what if it wont be the most powerfull thing out there it will be kick ass. no offence intended.

thanks for your in-put,
owner of project ultimate

[99silveradoguy]

its nice to dream at 15, then 18 rolls around and real life kicks in :LOL:

anyways plan backwards. youll need to upgrade your suspension, frame,rear end, transmission, driveshaft and brakes. having a bad ass motor with a blown rear end or blown tranny doesnt work to well :read:

[98GreenMachine]

If you lay frame on 22's in a 4wd OBS with a 572 in it then I will drive across the country to see that bad ride.
Not that it can't be done,but you can jack the price wayyy up.
Lowering a 4x4 and retaining a good geometry isn't really a problem,but bagging a 4wd and keeping it functional use's part's of the frame that would be taken up by motor I think.
Not that it can't be done,just saying it will be a huge project and I would definatly not want it to be my first large project.
If you decide to do it definatly post up build info and stuff,I'd love to see one if there isn't one already.
I like a more functional ride,if I had that I sure wouldn't be driving it much. If I did I would hate to take advantage of the torque.
The entire truck would need stripped and reengineered probably to do it right and actually utilize the power.
Sound's like fun,now I want someone to do it.

I don't know jack about dropping trucks, but im curious as to how it will be possible to lower a 4WD with a heavy 572 up front? more so how to make it adjustable so you can raise and lower that heavy pig? :think:

[383 silverado]

I don't know jack about dropping trucks, but im curious as to how it will be possible to lower a 4WD with a heavy 572 up front? more so how to make it adjustable so you can raise and lower that heavy pig? :think:


X2

i do know that you can use airbags to lower and lift cars or trucks. after all semi's use them. what i don't know is how reliable they would be lifting the extra weight of big block.

[DefEddie]

Anything can be done,but i'm thinking it would take at least some custom header's,custom radiator,best way would be to strip the truck completely and build a custom frame.

Not sure what you mean by how do you lower it with a HEAVY 572 in it? If I were doing the 572 only then I would simply upgrade the torsion bar's to a heavier 2500 bar and use belltech key's.
I think they mount the bags on the top of the upper control arm to a custom plate on the frame horn to retain 4x4.
There are some pic's on here of some guy's that have done it and retained the 4x4.
With the 572 I would say(custom frame!) maybe mount some shockwave's forward or rearward of the control arm's,kinda sidesaddle sorta.
That would leave space behind in the fenderwells(say goodbye to cover's) for the 572 and of course obligatory big bling wheel's.
The would have to be far inboard though to clear the wheel's,might even be easier to change the mount to the lower control arm.
I don't know,i'm just throwing that out.Suspension is NOT my strong point,but it's not impossible to simplify usually.
I'm going to just attempt some AFCO coilover's custom mounted similar to where my shock's are.
Airbags won't have a problem with the engine,it would be almost a non-issue except where handling came into play. With a 572 retaining the 4x4 with some mod's for AWD would be the best bet.
I'm not using near as much motor,but counting on the transfer case to solve my traction issue's.

[91_bowtie]

Why would you try to make a tahoe fast? Why don't you just build a lighter car, so you're not wasting so much money? :LOL: :LOL:

:run:

[97'hoe350]

well looks like i got a good project ahead of me. :) thanks for the info guys.

[DefEddie]

Why would you make a nova fast? or a camaro?
If it's simply because of the weight then you are a career racer I guess,or simply want to be as fast as possible.
It's a personal choice thing,like why the hell would someone put 30" rim's on anything? No real point,but it's a personal choice.
I just really like OBS truck's,and i've gotten partial to yukon's.
I have 2,and one of them weigh's around 4k right now I think.I'll get specific number's this week hopefully as I need to weigh it anyway.
My 4dr was fun simply because I had a goal to shut up my buddy with a slightly modded LT1 camaro who laughed at my yukon.
I didn't beat him,but I came within .2 of it and while it didn't shut him up it toned him down.
And that was with 200k on the clock and 20's,2 12's in the back.
http://www.youtube.com/watch?v=t3NGcBg_V7M

It'll never smoke that camaro,and he could spend a couple hundred bucks and a few hour's in the shop and put me out of his reach without doing alot of work.
But it's fun,and thats the reason I do it.

[98GreenMachine]

Why would you make a nova fast? or a camaro?
If it's simply because of the weight then you are a career racer I guess,or simply want to be as fast as possible.
It's a personal choice thing,like why the hell would someone put 30" rim's on anything? No real point,but it's a personal choice.
I just really like OBS truck's,and i've gotten partial to yukon's.
I have 2,and one of them weigh's around 4k right now I think.I'll get specific number's this week hopefully as I need to weigh it anyway.
My 4dr was fun simply because I had a goal to shut up my buddy with a slightly modded LT1 camaro who laughed at my yukon.
I didn't beat him,but I came within .2 of it and while it didn't shut him up it toned him down.
And that was with 200k on the clock and 20's,2 12's in the back.
http://www.youtube.com/watch?v=t3NGcBg_V7M

It'll never smoke that camaro,and he could spend a couple hundred bucks and a few hour's in the shop and put me out of his reach without doing alot of work.
But it's fun,and thats the reason I do it.

that was a bit of sarcasm on 91_bowtie's part, check out his sig..

[91_bowtie]

that was a bit of sarcasm on 91_bowtie's part, check out his sig..

ehh.. it's just a tahoe with big rims :dunno: :LOL:

actually, they're gone in favor of these...
http://img.photobucket.com/albums/v74/four_under/DSCN3859.jpg

Here's a vid of the initial startup with the new motor. The smoke is just all the oil burning out of the pipes from when the old motor blew up.
http://img.photobucket.com/albums/v74/four_under/th_DSCN3968-2.jpg (http://smg.photobucket.com/albums/v74/four_under/?action=view&current=DSCN3968-2.flv)

It runs ok for weighing 5800lbs. :cool:

[98GreenMachine]

ehh.. it's just a tahoe with big rims :dunno: :LOL:

actually, they're gone in favor of these...
http://img.photobucket.com/albums/v74/four_under/DSCN3859.jpg

Here's a vid of the initial startup with the new motor. The smoke is just all the oil burning out of the pipes from when the old motor blew up.
http://img.photobucket.com/albums/v74/four_under/th_DSCN3968-2.jpg (http://smg.photobucket.com/albums/v74/four_under/?action=view&current=DSCN3968-2.flv)

It runs ok for weighing 5800lbs. :cool:

I forget, did you S/C that one or no?

[91_bowtie]

I forget, did you S/C that one or no?

yup... I kept the whipple.

It felt much torquier than the old motor, and I haven't had it past 40% throttle according to the logs. I have a date with a z06, the day I get it back. :LOL:

[DefEddie]

Hey,you ever heard of a Porkchop?
Ran across it on the net,look's like it slides in place of the torsion bar's for bag's.
Don't think it would fit with a 572 but..
A 572 and 502 block are the same size right?
There is a guy on Pac that has a 502 tahoe.
These day's of high gas price's i'm sticking with my small block and going F.I. instead.
Hey 91,know much about turbo's?

[91_bowtie]

If gas mileage is even a small concern, you're going down the wrong path. I got 7mpg on my first tank with this setup.

I know a little. In a heavy truck, that's a daily driver, I'd use a twin screw or roots blower. the off idle torque is tough to beat.

[97'hoe350]

so there is a differance between the power provided by the two blowers? what are the advantages and disadvantages?

[98GreenMachine]

so there is a differance between the power provided by the two blowers? what are the advantages and disadvantages?

what two types are you comparing?

[TigerEyz3]

My guess is he's talking about TURBOcharger vs SUPERcharger (inferred from his initial post where he referenced a twin turbo).

Quick and dirty differences btween the two:

Superchargers run off the motor (instantaneous power at all rpms)
Turbochargers are exhaust driven (higher rpms generate power)

[98GreenMachine]

My guess is he's talking about TURBOcharger vs SUPERcharger (inferred from his initial post where he referenced a twin turbo).

Quick and dirty differences btween the two:

Superchargers run off the motor (instantaneous power at all rpms)
Turbochargers are exhaust driven (higher rpms generate power)


thats sorta right:

superchargers, more specifically roots- and screw-types, produce power at all rpms. These are much better for low end, off the line, power. This is due to them being positive displacement pumps.

Centrifugal superchargers are more like a turbo, they directly rely on high rpms to produce power. Just like a turbo has to spool up to produce boost, a centrifugal has to spin fast to produce boost. This is why they make their power on the top end of the rpm band.

[DefEddie]

There's alot more difference's between turbo/supercharger's,but those are good point's.
A supercharger's power is always there,a turbos power will come in under load when the cylinder's are the most effiecent and exhaust volume and velocity rise's.
A turbo will usually not come in fully till at least 3k though it's totally dependent on alot of factor's including exhaust,cam,valve and more differnce's.
I don't have much experience with them really,and mainly in diesel application's. I'm trying to build my small block for low rpm torque(2k-3500rpm) with a torque peak around 5k and hp peak around 6-6500.
Might not work out that way,but i've got a good basic idea in mind.Every part so far purchased and parts to be purchased have had careful consideration of CFM/flow ratings vs cylinder volume and theoretical effiecency.
I'm trying to factor everything in so I know exactly how much air this thing is pushing at any given RPM or pressure.
Tuning them is where the major difference come's in.
A supercharger power is basically constant as it's not dependant on load,so its alot simpler to tune for.
A turbocharger's power is more linear,and is primarily dependant on engine load.
Kinda like the more you make it work,the harder it work's.
As opposed to a supercharger that has one constant level.
I'm by no mean's an expert on anything,but that's my take as I understand it.
A big block tahoe would be awesome,but like stated would be a weekend vehicle simply because it's not feasible.
Being fuel injected would help quite a bit though,cause you can optimize for fuel effiecency.
Also you can a weak spark map during the week,and on friday fill it up with an Avgas/101 mix,reprogram the ecm and head to the track.
I did that for month's with my yukon,changing the timing maps back and forth every weekend at the track.

[97'hoe350]

dude i know wat the differance between a turbo and a super is. i just wondered about the skrew and the centrifugal. but thanks for the info. i think im gonna leave the 572 project to (much) later in life. lol. if i keep the stock 350 in it would it be easier to lay frame while keepin the 4x4. (on 22s mind u) i understand that it may be the problem of the 4x4 working, but it is sooo much easier to get up the mountian with the 4wd. im a skier so i am always goin up those slippery mountain roads. thanks again

350.

[98GreenMachine]

dude i know wat the differance between a turbo and a super is. i just wondered about the skrew and the centrifugal. but thanks for the info. i think im gonna leave the 572 project to (much) later in life. lol. if i keep the stock 350 in it would it be easier to lay frame while keepin the 4x4. (on 22s mind u) i understand that it may be the problem of the 4x4 working, but it is sooo much easier to get up the mountian with the 4wd. im a skier so i am always goin up those slippery mountain roads. thanks again

350.

So im curious what made you change your mind suddenly? Granted the project seemed doomed before it was even started, im still curious what finally made you decide to call it quits..

[97'hoe350]

not callin it quits, just gonna wait for a little while to do the big stuff. i can still do the stuff that i can handle now like the wheels, paint, lowering kit, bumpers, and grille. i can handle that stuff now, and do the bigh stuff later in life.

[91_bowtie]

So im curious what made you change your mind suddenly? Granted the project seemed doomed before it was even started, im still curious what finally made you decide to call it quits..

When a 15 year old kid asks about swapping a bbc, you should know its bs from the beginning.

[DefEddie]

Not B.S. I don't think,just wishful thinking without enough knowledgable input.
I've alway's thought about building an AWD tahoe with a huge turbo. I'm now finally at the point in my life where thing's came together for me to do it.(Mainly finding a REALLY cheap 4x4 2dr)
It's been in the making for a couple year's already,just on a 2wd 4dr.
It's one of those project's that isn't gonna happen soon,and gotta admit he gained a little respect for listening to our advice and obviously thinking it through.
I say keep it in the back of your mind though,hell you will eventually do it.
I'm less than a year from completing mine,and i'm psyched as hell.
If he's country enough,the 572 will get done.
Thank god your waiting till your older and smarter though. I've lost so much money and time over the year's from mistake's and projects that were a bit big for my experience.
Every bit of that got me to where I am today,which is comfortable enough to do almost anything to a vehicle. And if I can't do it,i'm smart enough now to have learned when to admit defeat and call in help from pro's.

Oh yeah,one of the main thing's to remember is that it won't all get done right away. Unless your rich as hell it will take a year or more to get a truck where you want it,sometime's even longer. Make sure you PLAN your mods smartly,don't get a tune then a cam,or a bodydrop before rim's.
And first thing on the list should be a complete go over of the powertrain,you can't mod a truck that is constantly breaking down. That and you will end up getting tired of it quickly and doing something else when it's nothing but a problem.

[97'hoe350]

Not B.S. I don't think,just wishful thinking without enough knowledgable input.
I've alway's thought about building an AWD tahoe with a huge turbo. I'm now finally at the point in my life where thing's came together for me to do it.(Mainly finding a REALLY cheap 4x4 2dr)
It's been in the making for a couple year's already,just on a 2wd 4dr.
It's one of those project's that isn't gonna happen soon,and gotta admit he gained a little respect for listening to our advice and obviously thinking it through.
I say keep it in the back of your mind though,hell you will eventually do it.
I'm less than a year from completing mine,and i'm psyched as hell.
If he's country enough,the 572 will get done.
Thank god your waiting till your older and smarter though. I've lost so much money and time over the year's from mistake's and projects that were a bit big for my experience.
Every bit of that got me to where I am today,which is comfortable enough to do almost anything to a vehicle. And if I can't do it,i'm smart enough now to have learned when to admit defeat and call in help from pro's.

Oh yeah,one of the main thing's to remember is that it won't all get done right away. Unless your rich as hell it will take a year or more to get a truck where you want it,sometime's even longer. Make sure you PLAN your mods smartly,don't get a tune then a cam,or a bodydrop before rim's.
And first thing on the list should be a complete go over of the powertrain,you can't mod a truck that is constantly breaking down. That and you will end up getting tired of it quickly and doing something else when it's nothing but a problem.

THANK YOU!!!!! finally someone who has some respect! im tired of everyone telling me that everything i want to do in life cant be done! wether its getting good grades, working on my truck, or just life in general. sry i blew up but everyone in my life has downplayed everything i have ever done. my mom and dad are the only one's in my life that think that i can ammount to anything. thank you DefEddie. and to you all who said that i couldnt do it, i will rub it in ur faces when it gets done some day. i am sorry for going off but im tired of it.

thanks again,
350

[91_bowtie]

THANK YOU!!!!! finally someone who has some respect! im tired of everyone telling me that everything i want to do in life cant be done! wether its getting good grades, working on my truck, or just life in general. sry i blew up but everyone in my life has downplayed everything i have ever done. my mom and dad are the only one's in my life that think that i can ammount to anything. thank you DefEddie. and to you all who said that i couldnt do it, i will rub it in ur faces when it gets done some day. i am sorry for going off but im tired of it.

thanks again,
350

:nopity:

Respect is earned, not given. 99% of the people in your generation don't realize this.

I never said it couldn't be done. In fact, it'd be quite easy. I just don't think you'll ever do it. I know what it takes to pull something like that off, and at 15 you're not even close to being ready to take this on.

[Busted Knuckles]

Most folks are trying to help. Throwing a lot of money at something just to be different tends to breed a lot of regret.
Why not start small - production 2-bolt main big blocks can be had for a decent price, snag a Scat cast crank/forged rods and pistons setup, rework some production heads and run a lumpy hydraulic roller cam. You'll have a lot more engine than the tires can handle for 1/3 of what the 572 costs and you won't have to mess with header and intake issues, yada yada.
Start smaller since this will be your first big project. Most folks that shoot for the moon on the first try end up with a lot of parts for sale and nothing completed since EVERYTHING costs more than you anticipate and the budget gets passed several times over. Also, you'll need good fabrication skills since none of the big hp stuff gets by on production chassis/drivetrain parts.
Head over to the Chevelles site, there are a lot of prostreet, street/strip and drag racers over there and most are very helpful.
Hope you get 'er done!

[neoxaero]

I've always cheated with my cars and lived some where that doesn't have emissions :daddy:

Now i just need to get my new project off the ground instead of talking about it and twiddling my thumbs

[DefEddie]

Busted's got some good advice.
Build something else right now,and don't dump alot of money into it. Your gonna break alotta crap learning,nothing wrong with it but I would hate to break a 900$ crank cause I forgot to check rod bolt stretch or something similar.
Start building a junk motor for now,you don't have to have exotic part's. Hell you can blueprint a stock motor and get 50hp or more.
Don't think you need to buy $$ part's to go fast or something.
Learn how the engine work's and it's dynamics,then you will understand what you need to do to improve it.
Trial and error with what you currently have would be fun and educational.
Read everything you can about the Otto cycle engine,it's concepts and dynamics.
I've read alot of stuff,if I could only remember it all I would be a genuis. But that will only get you so far,you need to do actual trial and error and alot of math to really understand it all.
I would suggest you pay alot of attention in your Science and Math classes especially. Everything in an engine can be boiled down to basic mathematical formula's. Learn about the Ideal Gas theory which is the basis for modern fuel injection.
Just learn,the more you know the more you grow. fo dam sho.

[therealdeal770]

If I was wantin alot of power and low end torque Id build a 383.For the money they cant be beat.A bud of mine had one that he built in a 93 fullsize and it runs 12.15 without the juice on it and 11.20 with a 100 shot. He built the motor for around 5 grand. I dont see a 572 doin much better than that.Im wantin to build my s10 and if I do that is the motor I will use.The quarter mile times just dont say enough for that motor. Id be willin to bet hes in the high 4 low 5 0-60mph .Thats the range that is fun on the street.

[Pauly]

If I was wantin alot of power and low end torque Id build a 383.For the money they cant be beat.A bud of mine had one that he built in a 93 fullsize and it runs 12.15 without the juice on it and 11.20 with a 100 shot. He built the motor for around 5 grand. I dont see a 572 doin much better than that.Im wantin to build my s10 and if I do that is the motor I will use.The quarter mile times just dont say enough for that motor. Id be willin to bet hes in the high 4 low 5 0-60mph .Thats the range that is fun on the street.
I see a 572 doing much better than ANY street 383. But it all depends on your definition of better. Either engine CAN be built to overpower the limits of traction on the street.

Its all about the setup. (tires, suspension, TC, trans, gearing etc).

peace
Hog

[97'hoe350]

dude, right now im not gonna be doing much more than fricking exhaust, (dont have the money) so i was inquiring about the future. the big project will always be in the back of my mind and one day it will be completed. but for now im stickin to the little stuff. and im trying to learn as much about my engine and truck as i can. my dad works with a guy that is a mechanic for chevy as a second job. he's a good guy and knows his **** about everyting tahoe. but this project will have many stages to it. first is small stuff like the 4x4 drop kit, exhaust, maintence, paint job, etc. 2nd stage is probably gonna be inside and outside acc. (seats, dash, carpet, 22's, ram air hood, grille, roll pan, front bumper, etc.) final stage is gonna be suicide doors, engine (along with new drive train), bags', better paint, etc. so im in no hurry to do it. but im almost done with stage one, just gotta get the exhaust and install the drop kit. should have the drop on by say... 2 weeks or so, (school starts soon so i gotta get that done)

thanks for all the help so far,
350

[DefEddie]

For the drop,get the Belltech torsion key's.
There's really no easier way to go,and ask your dad's chevy buddy for his nifty little torsion tool.

[97'hoe350]

o, i already have the belltech kit. im just trying to balance my cross country practice with workin on my truck. sundays are rely the only days i get off. and i dont know if i can knock it out in a day. so im gonna have to wait till i get saturdays off from cross country. that might be a couple weeks. but my dads buddy might be able to help us out. and im sure that he can also help us wit the key tool. will the kit effect the ride quality?

[DefEddie]

I've only got the front key's in so far,and they are adjusted all the way up.
I haven't got around to doing the rear yet,in fact going outside in just a minute to yank my rear from out of the 4dr.
Shouldn't cause any undo ride harshness unless you adjust all the way down or all the way up.
All the way down will take alot of tension off the Torsion Bar,which is a progressive rate spring. Adjusting all the way up will put alot of tension on the bar,so the ride might get stiffer.
Overall,you shouldn't notice a huge difference. Be aware that if your shock's aren't any good that you will notice it though.

[97'hoe350]

ok. my shocks arnt too bad. and what about towing? should i install some helper bags? It will probably only be an open trailer with a light atv in it. so overall about 1000 lbs total.

[DefEddie]

You should retain the same load rating's with the belltech kit,so unless a suspension component is bad you shouldn't have any problem's.

[97'hoe350]

cool. thats good to know.