opinions on motor swap

sharkbait

sharkbait

New member
im gonna try to make this a simple post. especially since i have so many things influenced my decisions.

i have a 95ext RWD 4.3 TBI 4L60e S10

i have a syty motor totaly complete. harness, fuse box, excessories etc.


i think im gonna put the syty manifolds/turbo on the 95 motor.
i will then need to buy a larger (V8) injector, afpr, bigger fuel pump, msd btm, and i will monitor the motor with a wide band.

PROS
then i can keep my 4L60e that is rebuilt/with a shift kit and my 2800stall converter. i wont have any issues with the tranny shifting, i can leave the column shifter alone. don't have to buy a floor shifter (pricy) i don't have to take out the motor. and thats important because i can't lay the truck up for more than 3 or 4 days.

CONS
if i put the syty motor in with the harness. im going to need a early model 700r4/4L60, then have it rebuild just to play it safe. and like i said, id have to lay the truck up which really isn't an option this summer.

so to you none factory syty guys..... what do you think? how easy/hard should it be to put the manifolds/turbo on the TBI 4.3? should i :hang: i used to be on a forum astrosafari.com, and there was a guy that did a CPI 4.3 astro. he did a similar turbo system. he didn't have any really concerns up to 12 or 13ish psi on 94 octane.

i will definetley put the real syty motor in with the complete harness. i would love to do a 4L80e or even a th400. i just cant lay the truck up this summer.

any ideas would help.............but please don't suggest i buy a syty :chair:
 
clone 94

clone 94

New member
Re: opinions on motor swap

TBI's are a pain. you wont get more than 300 hp, and even that will be a chore. supporting alot of HP is difficult with only two injectors.

i played the TBI game for a while as did a few others. we pushed them pretty far, but needless to say we all have custom MPFI setups now

IMO swap in the complete syty motor and switch tranny's
 
silverblaz

silverblaz

Member
Re: opinions on motor swap

I CAN HELP YOU OUT !!!

i have a 95 4.3 with syty intake and exhaust on it with a 20 g and i am running a 4l60 e i can show you how to rewire the computer you have and run BOTH syty ecm and your 95 for th ecomputer
 
UR50SLO

UR50SLO

V6+2=LSXCamaro
Re: opinions on motor swap

In your situation I'd do what Silver said..... Swap in the entire Sy/Ty engine. Leave in your 4L60E and think of the 95 ecm as a "Transmission controller" only. It won't care that it's not controlling the engine. It'll need to have several inputs to base transmission controll. RPM/Speedo/Ect.
It's definatly possible with some wiring to hook all the inputs/power you'll need to keep the existing ECM(95) to just controll the Transmission.
The Sy/Ty ecm will just be for the motor. The 4wire connector that go's down to the 700R will be un-used. Alll your factory gauges can be hooked up also.. no problems there.
That'd be the cheapest plan with the best results for your situation IMHOP.
~Scott
 
sharkbait

sharkbait

New member
Re: opinions on motor swap

that sounds like a good idea. however, i found a guy on craigslist and hes swapping his "older" car from 700R4 to a standard shift. i believe its an early model camaro 700R4. he has the tranny (excellent working condtion) 2500 stall converter, flywheel, tranny cooler and a hurst ratchet shifter all for $450 nego.

im gonna tell him to keep the shifter and flywheel and offer him $300.

it he bites i will just swap out my tranny. ill sell my tranny and recoupe some money. i have a 2800/3000 stall converter, and not sure which one i should use. im guessing 2500 stall should be plenty of stall in in "stock" motor/turbo.

anyway, we will se what happens tomorrow when i see the tranny.

SILVERBLAZ, thanks for the info. if it doesn't happen, ill def be contacting you.
 
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