can i stroke my 350 TPI?
11-18-2004, 08:32 PM
#1
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Car: 1991 camaro Z28
Engine: 5.7 v8 350
Transmission: 700r4
can i stroke my 350 TPI?
ive been told by many people that my Z can my stroked but i have also been told that since it has a ecm i cant stroke my 350. If it is true what esle would i need to do besides the rotation assembly, like better fuel injectors? somebody set me straight here.
11-18-2004, 10:45 PM
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Car: 2000 BMW M5
Whoever told you your 350 tpi can't be stroked shouldn't be allowed to touch cars, ever. Yes it can be stroked. You'll need a custom EPROM chip for sure, as the speed density system you have makes assumptions based on the map which will no longer be valid for a different displacement motor, which will likely have a different camshaft. You will want your heads ported or (better yet) replaced with something better flowing -- a long stroke engine really needs good heads. Yes, larger injectors would be a good idea, at least 24s to start with. Your eprom will have to be programmed specifically for the size injector you choose. You will probably want a bigger throttle body than stock, although you could use the stock one if you had to. A stock TPI base manifold and runners are barely adequate for a 305, so for a 383 they will be largely inadequate. If you're looking to make power, you'll want to look at aftermarket manifolds and runners for the 383.
Definitely not a cheap route to go, but yep you can stroke it and keep a TPI.
Definitely not a cheap route to go, but yep you can stroke it and keep a TPI.
11-18-2004, 11:05 PM
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Car: C-20
Engine: 260 boat anchor Mexican 350 (crate) TPI (MAF)
Transmission: THM-400 I turn 3500 (which is where my pos engine's power starts droping off) at 80 I need a 4L80-E
SHURE IT CAN
11-19-2004, 06:14 PM
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Car: 88GTAnotchbac/91 -Z/66 Chevelle
Engine: All strokers
Transmission: Pro built 700r4's
If your going to stroke it go with a 396 every one and there grandma has a 383..lol
11-20-2004, 10:31 PM
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Originally posted by formula91
You can stroke it, just make sure you've let it cool down otherwise you'll burn your hand.
You can stroke it, just make sure you've let it cool down otherwise you'll burn your hand.
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11-20-2004, 11:21 PM
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Car: 1990 Pontiac Firebird Formula
Engine: 305
Transmission: 700 R4
Axle/Gears: peg leg
TPI isnt speed density is it, my friends tpi is mass air flow and it just reads different changes in the motor and compensates for it.
11-21-2004, 11:36 AM
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Car: 1991 Trans AM GTA
Engine: 5.7L TPI
Transmission: 700R4
Stroke it...if I ever have to replace the motor in my car again, it will get stroked. If I do, I will go with either a 396 or if there is anything bigger than that, I may consider the larger cubes 
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