92 c1500 v6 to 383 tbi need advise on build

[twistedc1500]

What's is up I need some help finishing up my build
My 2 bolt short block is built with internally balaced 383 eagle crank bored .30 flat top pistons 5.7 rods I purchased some edelbrock performer heads 2.02 /1.6 60cc chambers my cam is comp roller 252/258 .50 200/206 .472-.480 110 lobe with comp cam magnum roller rockets ill be running edelbrock tBI intake and 50mm tbi set up got msd distributor ,blaster,8.5 wires
My questions
How much HP could I expect ?
The tranny I have is a 700r4 that was mated to a v6 will it handle what I have?
Can I use the v6 harness and computer and just get a chip?
Is the cam and set up I have good enough to achieving 400+ HP?
What torque converter do I use with my build and 700r4?
What size/length push rods will I need for the edelbrock sbc tbi aluminum heads?

I'm new to the tbi system so ill need as much help as I can get especially the tunning ill cross that bridge when i get there I guess

[KJMac]

That sure isn't much cam for a 383! You won't build 400 HP with that setup. Are you stepping up to an aftermarket throttle body?
Since you are having a chip burned, I would go up to the 212/218 comp but don't remember the lift. I think it is the 256 extreme energy
Hydraulic Roller. This will get you closer the the number you want. If you don't tow heavy trailers you could go up to the 262.

[twistedc1500]

I'll be running stock tbi just bored to 50mm 454 injectors, and afpr what do you think about this cam
08-412-8 1200/5200 adv dur 264 int/270exh valve lift .487/.495 exh 110 lobe

[Doober]

That's the cam I have. For daily driver and torque it's awesome while still giving some love at the top end. Run a 3.42-3.73 though, I have 3.08s and while it still pulls hard down low, the mid-top range could use a little help in anything but 1st gear. I'm running 28" tires. 80lb. injectors and a vacuum reference fpr with a Vortec pump will give the fuel you need.

[KJMac]

I think the 08-412-8 is going to give you what you are looking for.....atleast close! Should run good.

[Doober]

It idles like a stock truck :) I also went from a v6 to a 383. The trans is holding up, but just barely. I've been very easy on the shifts and it's lasted about a year, but 4th gear is now really really weak. You could drive it but plan on either swapping in a manual or get anoher trans in anticipation for a rebuild. Once it's in gear it typically holds up fine, but the shifts are really, really soft.

[twistedc1500]

Thanks for the help with my cam selection....my truck was a v6 with 700r4 can I use that harness and computer and just get it chipped or do I have to get a 350 harness and computer..also what stall on my torque converter do I run....for now I have a stock 10bolt rear end what's the gear ration on those?....I'm looking for 3.73 rear end right now will my rear hold up mean while I find my 3:73?

[Doober]

It's a mild enough cam that you can use the stock converter. You will definitely need tuning, I went with an EBL and the TT-1 wideband because I didn't want to mess with chip burning, hooking up via laptop is much easier (plan on $500-600 for those). If you go with the EBL it replaces your current computer and you can program it between something like 1 and 8 cylinders. If you do go with the EBL and same fuel setup I have, I can send you my current BIN to get you in the ballpark. I've read the TBI specific intakes don't make very big power... I went with a carbed intake and adapter (for all intents/purposes) when I built mine, first with TBI heads (went with a Holley ProJection intake that was basically a carbed EGR intake they machined to accept up to a 50mm TBI), then with the Vortecs (GMPP EGR intake with a TBI-spreadbore adapter that was used on 454 trucks).

Far as the rear, look in your glove box for the rearend code, it will start with a G followed by two more characters.
GT4: 3.73
GT5: 4.10
GU2: 2.73
GU4: 3.08 (what I have)
GU6: 3.42

Also, if you see G80, that means you have a posi rear. If your truck was ever modified, etc. I would double check and see what you have before actually trying to find another rear.

[twistedc1500]

I was originally going with gmp tbi with vortec heads but came up on these center bolt edelbrock heades with comp cam magnum roller rockers for 500 bux I thought it was a steal so that's why I'm going with edelbrock 3704 intake.....I wanted to go carb but where I lived I need to pass emissions I did not know they make carb intakes with egr can u send me a link of one? I still haven't gotten my intake and tbi yet so I'm still debating wich route to take maybe even tpi if its easy

[Doober]

You can use any traditional SBC carbed intake, if you use an older one you can elongate the center holes.
http://www.summitracing.com/search/D...?Ns=Rank%7cAsc - 72º inside bolts

http://www.summitracing.com/search/D.../?Ns=Price|Asc - 90º


This is almost the exact same intake I had with the TBI heads, why it's so expensive I have no idea.
http://www.summitracing.com/parts/HLY-300-64/?rtype=10

See the similarities?
http://www.summitracing.com/parts/HLY-300-66/?rtype=10

I just noticed you mentioned TPI. If you wouldn't mind the extra $ for bigger runners, TPI will yield insane amounts of torque. I didn't have the funds or available downtime when I put Vortecs on my truck so I just stuck with the TBI/spacer and it still makes awesome torque down low, even with 3.08s. I still plan to go with TPI because I also have emissions here in the Tucson area. On a side note with my current setup (that Comp cam, Vortecs, nonfunctioning EGR, GMPP intake, full length headers with single 3" cat) I passed emissions first time around. If it was an '87 or older I could forego emissions with classic car plates (25+ years are eligible with classic car insurance), so I plan on doing that with my '78 Malibu.

[twistedc1500]

So u think that holley tbi intake is better than the edelbrock 3704.....do you have any videos of your truck?

[Doober]

I'm only going off what I read about the TBI intakes, but I know the Holley intake breathed alright to 5k or so, but I was also being held back by the original TBI heads.

[KJMac]

You could get a really good intake and use the adapter for the tbi! I'm not a big edelbrock fan but they have some good products.

[twistedc1500]

So what do I do as far as wiring and computer what's the best way to get it chipped and how much am I going spend on that

[Doober]

You'll need quite a bit of custom tuning... typically dyno testing/tuning, or you can go with DIY stuff. I have the EBL and for nearly $600 it's basically a one-time investment for your vehicle... in all honesty you could take almost $200 off for the TT-1 wideband and it will only be around $350-400 max for the EBL itself. It plugs right into the OE wiring, uses your current sensors, and adds near infinite tunability imo, you set it up for whatever you're running and it's basically almost real-time tuning (you do VE learns, pull over, flash the ECM and continue driving on a more accurate tune). I just picked up an '87 Fiero with a 2.8 and I may upgrade to the EBL down the road for possible performance upgrades (ported heads, cam, etc.)... that or if/when I go to a 3.4 engine.

[twistedc1500]

My truck has the v6 harness will the EBL plug in to that? How hard will it be to tune my truck it I have no experience with tunning what so ever is it easy to use?...i need to run egr to pass emission can I still use ebl to do this

[twistedc1500]

I just bought this edelbrock 3706 intake does anyone know a part number for the egr for this intake?

[Doober]

Yes EBL will work with the v6 harness and it will run EGR. It's likely you'll need the '80s era EGR unless you bought the TBI-specific intake, then it's probably the same as stock TBI.

[twistedc1500]

I've been doing a lil reading on injectors and I'm confused now.... Which injector will work best with my set up before I buy them

[Doober]

I'm running 80lb. injectors with a vafpr (18psi/23psi) and it's plenty, I'm only hitting ~70% d.c. You may be able to get away with less injector though, I'm on the edge of too much gas as it sits already. A smaller cam would probably take even less at idle. I don't have the math in front of me but you may be ok with the 60lb. range.