Post technical questions and answers about your ride.
by IDROCU » Sat Oct 24, 2009 7:40 pm
Im thinking of stroking my 350(l98) i believe i can use a 3-3/4 stroke crank any suggestions for the build heads,cam,intake,ect i would like to keep the tpi set up so any info on the upgrades need for that also would be much appreciated
Thanks guys
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by Aron213 » Sat Oct 24, 2009 7:45 pm
IDROCU wrote:Im thinking of stroking my 350(l98) i believe i can use a 3-3/4 stroke crank any suggestions for the build heads,cam,intake,ect i would like to keep the tpi set up so any info on the upgrades need for that also would be much appreciated
Thanks guys
That makes it a 383(6.3 ltr) which makes using the stock TPI intake even worse, your going to starve the motor for air,the TPI intake flows perfect air for small CI motors like 305's...why are you dead set on keeping the TPI when there are alot better FI intakes that are direct bolt ons.
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by 87350tpi » Sat Oct 24, 2009 7:48 pm
my heads spinning from trying to keep up with all the threads.
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by IDROCU » Sat Oct 24, 2009 8:12 pm
Aron213 wrote:IDROCU wrote:Im thinking of stroking my 350(l98) i believe i can use a 3-3/4 stroke crank any suggestions for the build heads,cam,intake,ect i would like to keep the tpi set up so any info on the upgrades need for that also would be much appreciated
Thanks guys
That makes it a 383(6.3 ltr) which makes using the stock TPI intake even worse, your going to starve the motor for air,the TPI intake flows perfect air for small CI motors like 305's...why are you dead set on keeping the TPI when there are alot better FI intakes that are direct bolt ons.
im not dead set on using the stock tpi im just tring to get as much info before i start to see what direction im going to go as for the fi bolt ons are they campatible with the computer this i dont
know im triyng to learn thats why it says help
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by 87350tpi » Sat Oct 24, 2009 8:15 pm
any cubic inch change, injector change, internal engine change, the list goes on will require calibration for you to see any gains for the money and time invested in the upgrades. small mods like exhaust and such really dont require any tuning small bolt ons like rocker arms, or minimal intake changes dont either.
if you plan on making power... might as well plan on running a different intake at least
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by Aron213 » Sat Oct 24, 2009 8:17 pm
There are several intakes that still use the stock ECM, some even still look like the stock tpi and flow alot better, but stock TPI intakes are crap, they just cant move enough air to support any amount of HP.
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by blue89irocz » Sun Oct 25, 2009 12:06 am
Check out this website,
http://www.tpis.com. They deal alot with tpi systems. There's alot of other products out there as well.
1989 Iroc-Z L98 383 Forced induction (In Progress), hardtop, T-56, 9-bolt rear w/ 3.73
Project will be complete in 2030.

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