Stock short block how far have you gone?
05-20-2010, 06:54 PM
#1
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Car: 89 GTA
Engine: 5.7L Supercharged
Transmission: T-56
Axle/Gears: Moser 9" 3.70
Stock short block how far have you gone?
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.
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.
05-20-2010, 11:26 PM
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Car: 89 GTA
Engine: 5.7L Supercharged
Transmission: T-56
Axle/Gears: Moser 9" 3.70
Re: Stock short block how far have you gone?
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.
05-21-2010, 11:26 AM
#4
Re: Stock short block how far have you gone?
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.
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.
05-21-2010, 12:17 PM
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Car: 89 GTA
Engine: 5.7L Supercharged
Transmission: T-56
Axle/Gears: Moser 9" 3.70
Re: Stock short block how far have you gone?
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.
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.
Very impressive MPH there, got to admit I'am so jealous of you turbo guys lol.
05-22-2010, 01:07 PM
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Car: '91 Z28 L98 G92
Engine: Modded L98
Transmission: Modded 700R4
Axle/Gears: Modded 10-Bolt
Re: Stock short block how far have you gone?
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
Last edited by Burnout91; 05-22-2010 at 02:21 PM.
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06-22-2010, 01:04 AM
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Car: 1989 Formula,1991 z28
Engine: 400 Vortec Hsr,496bbc
Transmission: TKO600,TH400
Axle/Gears: 9"4.10, 9"3.73
Re: Stock short block how far have you gone?
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
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
06-22-2010, 01:40 AM
#9
Re: Stock short block how far have you gone?
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)
06-22-2010, 03:09 PM
#10
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Car: 1986 Camaro SC
Engine: 305 TPI Procharged D1SC
Transmission: Tremec TKO-600
Axle/Gears: Moser 12 Bolt 3.73 posi
Re: Stock short block how far have you gone?
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
06-23-2010, 12:44 AM
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Car: 89 GTA
Engine: 5.7L Supercharged
Transmission: T-56
Axle/Gears: Moser 9" 3.70
Re: Stock short block how far have you gone?
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.
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