Will TPI Work with a 383?
#1
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From: Chesapeake, VA
Car: 1991 Formula Firebird
Engine: L98 with headers/exhaust
Transmission: 700R4
Axle/Gears: 3.23 10-bolt
Will TPI Work with a 383?
Hello. I am in the process of building a budget 383 to replace the tired L98 in my 1990 Corvette. I have all the hardware and am getting the block dipped/bored/honed/lined for under $1000. This will be a mild engine with hyperutectic pistons, so I was going to reinstall the TPI for now and maybe get a Miniram or something later. Will I hurt anything like this? Will tuning be worse with the intake restriction? Will a ported plenum, or aftermarket runners help? Thanks! Ben
#2
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From: Miami
Car: 1992 Camaro RS
Engine: L03
Transmission: 700R4
Axle/Gears: Stock
It will work just fine. It may not be enough to feed a 383 so you may need new injectors or something. And you'll definitely need to get the computer reprogrammed. It should do just fine until you get that mini ram. Won't hurt anything.
#3
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From: Chesapeake, VA
Car: 1991 Formula Firebird
Engine: L98 with headers/exhaust
Transmission: 700R4
Axle/Gears: 3.23 10-bolt
I'm going to hate to have to tune it twice, but oh well... Would 26.8lbers off my LS1 be OK? I guess I should ask that in the other forum...
#4
Originally Posted by danziger
Will I hurt anything like this? Will tuning be worse with the intake restriction? Will a ported plenum, or aftermarket runners help?
#5
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Car: 1987 IROC-Z Camaro
Engine: 5.7 350 TPI - SLP Runners, AFPR, MSD Goodies
Transmission: 700R4 - Shift Kit, Corvette Servo
Axle/Gears: BW 9 bolt, 3.27s
Tpi can work on your 383. It may not make optimum horsepower, but with a good tune, it would make a hell of a daily driver. Depending on the cam, Im sure it would make around 500 lb ft tq
#6
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From: Chesapeake, VA
Car: 1991 Formula Firebird
Engine: L98 with headers/exhaust
Transmission: 700R4
Axle/Gears: 3.23 10-bolt
Well, I haven't finalized the cam yet, but the engine will be heading to the machine shop on Monday for bore/hone/line etc. I don't want a big cam and using a tune as close to stock as possible would be great. The car will be a driver (I have a 576rwhp Z28 for going fast), so I don't need anything radical. Are ported runners a worthwhile investment? How about underdrive pullies? Sorry that I'm getting off topic, but I'm stoked and agree with 350KID that it should make a fun driver..
#7
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From: Hurricane, WV
Car: 01 Z28 and 89 Iroc
Engine: ls1 fti 3600,S60 w/3:73 gears
Transmission: A4
Axle/Gears: 3:23
https://www.thirdgen.org/forums/afte...-tpi-dyno.html
That's a sticky here and it's my bible for tpi 383 info. If you skim throw all the BS in the thread, there is some good info there.
That's a sticky here and it's my bible for tpi 383 info. If you skim throw all the BS in the thread, there is some good info there.
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#8
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Joined: Aug 2004
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Car: 1987 IROC-Z Camaro
Engine: 5.7 350 TPI - SLP Runners, AFPR, MSD Goodies
Transmission: 700R4 - Shift Kit, Corvette Servo
Axle/Gears: BW 9 bolt, 3.27s
stock cam should make even more torque, at lower rpms, just not as much midrange. Porter runners are cool
#9
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From: Chesapeake, VA
Car: 1991 Formula Firebird
Engine: L98 with headers/exhaust
Transmission: 700R4
Axle/Gears: 3.23 10-bolt
IROC315-Thanks for the thread link. A lot of info there!
I will probably go with a slightly larger cam than stock, but not too much. The car is a A4 and probably won't see the high side of 5500rpm. Thanks for everybody's input and any more tips/advice is always welcome! Ben
I will probably go with a slightly larger cam than stock, but not too much. The car is a A4 and probably won't see the high side of 5500rpm. Thanks for everybody's input and any more tips/advice is always welcome! Ben
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