Basically looking for peoples real world experience with their stock TPI short block and how far have they pushed it and still have it running reliable or not.

I'am in the process of finishing off my head, cam, and exhaust install and just getting a baseline on how far I want to go with this, I'll be at a 8.35 compression so with the blower I can pretty much pick whatever HP level I want to be at.

So if you guys have any Dyno, track, or whatever info you can give would be much appreciated.

 

there's a guy running 14psi on a stock 305 it's really all about the tune on the car he's handle is 86Z i believe from CT

 

I was running 18PSI for awile to on the stock block but those stock heads and cam are really a restriction, I don't think much of that boost made it through to the cylinders.

 

stock l98 longblock with a Holley stealth ram intake.

12 psi on pump gas for 10K miles never hurt the motor. I did have 72# injectors and a FAST ecm. Car went 124mph in the 1/4 with a t56 and 3:08 gear only got to make a few passes cuz it would always blow the rear out. With an auto I think 10s at 128 would be easy.

 

How far did you rev it with the holley stealth ram and stock block?

Very impressive MPH there, got to admit I'am so jealous of you turbo guys lol.

 

Its been 2 years or so but I would say around 5400-5800 tops

 

See thread "SCTPI Dyno Day May 15th " post # 54, for dyno chart. Oooops....this combo is N/A; I didn't notice it was a "Power Adder" thread

 

see sig...

i dont have an L98 shortblock, but its a 880 vortec shortblock, stock bottom end.

car was at the track last night, cut a 1.71 sixty on 245 dunlop radials..

best motor pass was 12.89@113 averages were 13.1s to 13.0s , heat and humidity was making my car run like poo! tried spraying it, didnt work out so hot lol

 

NA or not that is getting it done. Some really impressive numbers here.

Got one directed at the gent with 18 PSI what #s/times did you get from it? Also what year/type was the engine (LB9/L98)

 

i'm running a stock bottom end 88 305 roller, specs are in signature, best with a baby take off was 12.64 at 110mph. 14 psi of boost. not stock heads or intake

 

Was getting 12.5 with the 3.7" pulley and 1.8 60', think best mph was 110. I never got a chance to run it at the track with the 18 psi boost pulley before I lent my car out to my brother and he blew both head gaskets lol. My fault though sorta I was experimenting with timing and no knock retard on a new chip and he put in some lower octane fuel. But think it was good for low 12's for sure, it did give me a nice jump in power compared to the 3.7" pulley.