1993 chev extcab new motor with a pair of garrett t28 turbos...WOW!!!

[Wilbur1993]

I started this project when i was 16 years old. I admit being young i chose alot of bad paths with the engine and power adders. Nitrous was my first choice. Nitrous is fun but its just to darn unpredictable.. After my first couple engine swaps i believe from an improperly tuned nitrous motor, i started learning.. After the nitrous i went to a small procharger that produced a max of 8psi of boost. That was alot of fun no buttons or anything just push the gass and play.. After a year of the procharger i found that it just wasnt ennuff. So that brings me to my new setup not yet completed having sum small difficulties. I just purchased a lsx454 this engine has a set of castiron heads made my AFR. A prety decent sized cam with a jesel valve terrain. i also purchassed a set of Garret t28 turbos.. A bigstuff 3 computer and a mike morran fuel injection set up.. Im telling you this 4x4 truck has no problem mopen up the streets and mud holes around my town.. i haveing issues with a transmission and a sutible rear end and front end. the half ton equipment never did do the job and im not sure what would be my best rout. any sugestions?? id love to be able to drive my truck again.. im gettin tired of replaceing the 14 bolt rearend..

[loud98gmc]

replacing the 14 bolt ??? thats not a half ton rear axle ! 3/4 or 1 ton if its a full floating rear axle (flanges stick through wheels) and if your breaking thoes then id ether say build one up from a stock houseing and use better axles and gears or go bigger ....... dana 70 maby??? lol woops thats dodge talk in a chev forum ! but really theres alota heavy 1 tons in wreckin yards (atleast around here) and you can ether go the cheep way an get a bigger stock axle(upgrade to full floater 14bolt or go dana 70 , 80) or just upgrade your exisiting with good parts if its not completly demolished. 14 bolt has alota aftermarket support so its not hard finding parts for em . but props on makin enough power to go threw thoes cuz ive always herd the 14 bolt was the strongest of the gm truck axles but i gues the axles life depends on how hard you wheel it and how big yer tires are also along wit how much power your makin .

[Wilbur1993]

im sorry friend i shoulda said in my first post that i replaced the ten bolt with a 14 bolt outa one of them goofy heavy half tons or 5/8s ton trucks that what i have for a parts truck.. I really dont mind spending money expecialy if its goin tward my truck on the road.. So if you could help me come up with a few part numbers and stuff like that i would greatly apreciate it.. My other issue is the 4l60e tranny. i put a big sun plate in it and all sorts of other goodies.. what is a tuff i mean really tuff automatic electric tranny that i icould replace it with. i love the way the 4l60e worked. after i get the rearend rite thats gunna be my next weak link .. and weak links i really dont want.. and transfer case.. wonder if i should just take all my goodies outa that 1/2 ton and just go buy a 3.4 or one ton

[RPMbagged97]

For a trans you will probably need to go to a 4L80 to be able to hold that amount of power. Im not sure what they use in a 3/4 ton 4x4 for a trans and transfer case, but that might be something to look into. I know the trannies in the NBS SS trucks is weak, so thats not an option.

[someotherguy]

Gonna have to go solid front axle to get anything strong up there. The IFS stuff isn't going to cut it no matter what.

Go full floater in the rear from a heavy 3/4 or 1 ton. What you've got now is the 14 bolt semifloater, 9.5" ring gear, from the 2500LD. Strong but not crazy strong.

Richard

[Wilbur1993]

Thats a reall bummer about the solid front end deal i really like the ride of the ifs.. but i suppose if i want to put the power to the ground i need the best.. Can you recomend any kits or sumin like that for the front end... i do alot of engine work and tranny work but im not that good with suspension and stuff on those lines.. your oppinion will be greatly appreciated.. i should have dyno numbers posted as soon as i get the trany and rear end in.. one other thing i found a 4l85e is that any beter than the 4l80 or shouldnt i need to wory about it???



i know this is the wrong forum to post this on but i was wondering if a big block throttle body will bolt on to a mild tuned small block??? would it help?? im worken on a buddies 94 2wd.. any opionions on that??

[someotherguy]

Hit the Offroad forum here for help on the suspension stuff, lots of guys in there have done it. The solid axle conversion is the accepted solution to the weak IFS unit.

4L85E is a newer version of the 4L80E, certainly it has some improvements, but I don't know exactly what. You may have issues getting a compatible PCM to control it as it'll be a transmission from newer models. Nothing wrong with a 4L80E so I say just roll with it.

Big block throttle body will bolt onto a small block, physically, but not necessary unless you've significantly increased the amount of air it needs. Also, some of the connections aren't the same, so it'll require hacking sensor connectors (which I hate doing) and there are other functional differences, too. Best bet would be if you need more airflow, have someone bore out the existing TBI unit and match that to a better intake. Hit the TBI tuning forum here for more info.

Richard

[Wilbur1993]

Well i succesfully put a rearend tranny and solid front axle in my 93.. I brought it down to try and pull sum numbers with my 4x4 and had sum good issues lol.. Seems my boost controler dont ask me how mallfunctioned. i made a pull and the turbo pushed out max boost and now im sitten on a brand new lsx block with what im figuring to be a couple cracked pistons.. she made 1373 at 7400rpm (thats when she let loose). didnt even get a chance to make the rev limiter work :( back to the drawing board..