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For the A/C and efan, you said the PCM controls fans based on temp and A/C on. How did you get the new PCM to control fans based on your 1990 A/C? This is one of the few things I've been trying to figure out with the swap in my 95.
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old thread I know, but awesome build !
Any updates ? Does placing the turbo there allow room for a 3.5"-4" Downpipe ? Do you have any pics of the hotside ? I'm finding it a challenge to make a 4" DP on an OBS GMT400 while keeping the heater..... |
Originally Posted by richincanada
(Post 5381974)
old thread I know, but awesome build !
Any updates ? Does placing the turbo there allow room for a 3.5"-4" Downpipe ? Do you have any pics of the hotside ? I'm finding it a challenge to make a 4" DP on an OBS GMT400 while keeping the heater..... |
Originally Posted by BigBlock90
(Post 5382270)
3" is all the downpipe you gona squeeze down by the steering shaft on this truck. I used 2 passenger side manifolds and made my own pipes for it. It's now an iron block 376 engine with a 7875 turbo.
Also, why were you not intercooled in your youtube video ? Is there room for an inlet air filter the way you have the turbo placed ? |
Originally Posted by richincanada
(Post 5382400)
Thanks man, how much HP are you making thru that 3" DP?
Also, why were you not intercooled in your youtube video ? Is there room for an inlet air filter the way you have the turbo placed ? I have air conditioning on the truck and dont have room for an intercooler up front without cutting stuff up and im just not gonna whack this truck up. I run a dual nozzle meth kit on it so iat's are just fine when making a pull. |
4l80e
Which psi wiring harness did you use to hook up to the 91 4l80e to work with the ls
Originally Posted by BigBlock90
(Post 5232666)
ive had fun with the 461BBC for a while now and have became bored with it. it made 441rwhp/530rwtq on that carbed motor but just wasnt enough. i then added a nitrous kit to it and it pulled 601rwhp/695rwtq on the 175 jets but that too got aggrivating real fast with filling bottles so often. on to NOW.... i have researched the LS motors and all these turbo swaps for a good while on here now, SO THANKS TO ALL YOU GUYS FOR SPENDING MY MONEY!! after seeing in real time the power those lil engines make then i knew i was hooked. i took a 2003 Tahoe 4.8 engine, added a z06 vette cam, pac1218 springs, new head gaskets, arp head studs, a Fast lsxrt 102mm truck intake, holley fuel rails, 80lb injectors, snow performance stage 2 meth kit, all stainless braided -an fuel lines and fittings, a vette regulator/filter combo set for 58psi, aeromotive 340 pump in the tank, and bolted everything up to my 4l80e and billet 3400 converter. all exhaust will be 4" back to axle. the turbo is a Borg Warner Bullseye S480 with race cover. 44mm wastegate and a 50mm blow off valve. im in process of building a 6.0 to swap in later, hence the reason for such a turbo right now. i used the stock overflow jug as my methanol tank and installed a nice polished billet catch can beside the battery for the radiator. i bought the aluminum bracket kit from LSBrackets.com to keep my air conditioning and the same serpintine belt runs it all. i used a PSI wiring harness for the engine. just 4 wires to hook up and she fired on the first hit. i installed a massive high output 2 speed electric fan and wired it on twin relays for my ecm to control the fan speeds when running normal vs turning the ac on. i mounted my intercooler between radiator and fan. the truck setting around idling never even gets any temperature hardly with the massive radiator from the big block. on to the purty stuff!! the engine ready to install... the engine setting in its new home... intercooler mounted... the wastegate and dump tube mounted... the intake.. and how it sets finished up... the down pipe isnt installed in this pic but you get the point!! the truck that its in.... i will update thread as soon as we get it tuned on the dyno in the next week or so and i'll be sure and bring a video aswell :-) thanks for looking,Jamie
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