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Stock 99 z28 possibly running 7.90's??

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Old 01-23-2013, 09:26 PM
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Default Stock 99 z28 possibly running 7.90's??

My car is completly bone stock air lid and everything, my friend put an extremely aggresive tune on the car via hp tuner...it still has the 273 gears but it pulls like a demon on the road its an auto with a shiftkit.He was talking me into just changing the rearend housing to a 323 gear set up it already blows the tires off from a stand still I was jus curious with the awesome tune he put in it would it still be capable of hitting the high 7s ?
Old 01-23-2013, 09:29 PM
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Btw he took all torque management out of it and im running bf 295 radials in the rear
Old 01-24-2013, 02:22 PM
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no...
Old 01-24-2013, 02:25 PM
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Lol not likely.
Old 01-24-2013, 03:25 PM
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unless the DA is -4000ft, no

maybe mid 8s
Old 01-25-2013, 11:28 AM
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Stock auto without a stall, gl getting 8s
Old 01-25-2013, 12:50 PM
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My buddy's stocker will run 8.20's in the 1/8, but he has @ 3900 stall, 3.73's and ET street slicks.
Old 01-25-2013, 03:34 PM
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Originally Posted by Sladester2
Stock auto without a stall, gl getting 8s
When my Chevelle was 3900# with a super mild ~300 crank horsepower SBC 350 with a stock stall and 3.08 gears it would run 9.2s all day right off the road from driving to the track.

If a 3700# 345hp ls1 car can't do 8s in the 1/8th, you should push it off a cliff.
Old 01-25-2013, 10:27 PM
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Originally Posted by thunderstruck507
When my Chevelle was 3900# with a super mild ~300 crank horsepower SBC 350 with a stock stall and 3.08 gears it would run 9.2s all day right off the road from driving to the track.

If a 3700# 345hp ls1 car can't do 8s in the 1/8th, you should push it off a cliff.
k well what about a 280 hp ls1 like the one he describes..
Old 01-25-2013, 10:43 PM
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1998 trans am 100% full weight 3.23 optioned rear.. Lm muffler and a lid, absolutely 100% stock otherwise.. 8.4@84.

Unless you can't drive your manual or you are a ridiculously high da... If it takes you a converter to get in the 8s, something is very wrong. A bone stock auto should run 8.4-8.7s all day depending on options and make.
Old 01-25-2013, 10:44 PM
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And where is there a 280hp ls1, i have yet to see one dyno that low.
Old 01-25-2013, 10:45 PM
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Op.. I see 8.1s being the absolute best... Its all in the 60ft and with a stock converter, i don't see you getting there.
Old 02-01-2013, 10:07 AM
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Originally Posted by Sladester2
k well what about a 280 hp ls1 like the one he describes..
I was talking crank HP. If anyone has a 280 crank hp LS1 they should also push it off a cliff. A stock truck 5.3 will make that or more on 87 octane.

Regardless of what bullshit GM put on paper, all ls1 engines make ~340 crank hp.



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