On pump gas, you’re probably limited to low 500s. Maybe mid 500s if you run meth or use an octane booster.

I made 520ish (STD correction factor) with a 62mm turbo, head work, and 93 octane. Never thought about turning it up on e85 or race gas because everyone says the transmission will take a dump.

 

Could you add the displacement, engine speed, boost, IAT, and specific turbo used?

Thanks,

David

 

I wish I had all the details. After doing dozens of builds over the years, I pick and shop and don't ask too many questions. What I do know:

stock ap1 bottom end
cnc and upgraded drivetrain on heads (cant remember if it was 4 piston racing who did the headwork)
old school precision 6262
16-17psi (ive seen boost gauge hit 17 when its cold outside in 4th gear)
93 octane (I add a couple ounces of Boostane octane booster for safety when i know im gonna beat on it)


This is the only dyno I can find. This was with 3" downpipe, 2.5" testpipe, 2.5" Tanabe Medallion. I now have 3" test pipe and 3" HKS Single.



The other dyno is Kraftwerks with 12.5psi pulley. I also ran a 16.5psi pulley and made 460whp.