LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Track times! NEED Help!

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Old 12-29-2008, 10:44 PM
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Default Track times! NEED Help!

My car..... 94 Z M6 LT1 cc306 With dyno Tune, Stock Heads, Hooker Headers, Full Hooker Exhaust, 4:11 Gears, 60' was a 1.9 1/4 was 14.50 @101
Old 12-29-2008, 10:53 PM
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Something definitly isnt right. How does the car run, does it skip or pop any?
You have a decent 60' but that is very very low trap speed for that cam.
Old 12-29-2008, 11:02 PM
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The car runs fine I did a compression check and all cylinders are fine and i did a fuel pressure check and it was a good 50psi all through the power band No poping or backfireing, and doesnt seem slugish of the line either...... i dont get it......
Old 12-29-2008, 11:03 PM
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something is wrong, my nearly stock 95 ran 14.0 at 98, with a 2.0 60ft
my guess is its pulling timing, do you have stock knock sensor?
Old 12-29-2008, 11:05 PM
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wow thats just.. wrong are you sure you didnt leave the parking brake on ? along with afew cinder blocks tied to the rear bumper. full stock cars run faster then that..
Old 12-29-2008, 11:08 PM
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The car has stock sensors, The parking break is not longer on the car.....
Old 12-29-2008, 11:11 PM
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I know people have had issues with the knock sensor pulling timing with cams, iirc the lt4 one is less sensitive. do you have any way of logging it?
Old 12-29-2008, 11:14 PM
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Hmmmm I might be able to hook it up to the OBD scanner and try and read something that way..... will pulling timing like that throw a code? because i have no engine codes showing?
Old 12-29-2008, 11:18 PM
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Could your clutch be slipping? Traction issue? What rpm are you shifting at?

With your mods should be around low 12's or better.

I would also double check the tune you have.
Old 12-29-2008, 11:22 PM
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Well all this happend after the install of my Mcloed Twin disc. But it appears to be working correctly, Im shifting at 5800 rpm
Old 12-29-2008, 11:26 PM
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well everyone stay tuned... i'll be on tomorrow
Old 12-29-2008, 11:27 PM
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With that cam you should be shifting at around 6,200rpm - 6,500rpm
Old 12-29-2008, 11:37 PM
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still short shifting he should be quicker


damn my 383 i was shiftin at maybe 5500 just to be easy on the motor and i still pulled a 13.1 and the motor can hold 6500-6800 no prob and still pull that high just that high on my track would spin even into fourth when i was pullin through the trap lol
Old 12-29-2008, 11:47 PM
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1slo, yeah I think he might be spinning threw the gears, but could be a lot of possiblity.

He hasnt mention what tires he has with those 4.11's on street tires ill be suprice if he hooks.
Old 12-30-2008, 10:36 AM
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Your short shifting it for sure. I shifted my car when stock at 6100. with just a catback and DRs I went 1.9 60ft and a 13.32@103+
Do you have a dyno graph to post up??
Old 12-30-2008, 10:39 AM
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Originally Posted by 1slo_camaro
still short shifting he should be quicker


damn my 383 i was shiftin at maybe 5500 just to be easy on the motor and i still pulled a 13.1 and the motor can hold 6500-6800 no prob and still pull that high just that high on my track would spin even into fourth when i was pullin through the trap lol

Your leaving alot on the table shifting that low!
Old 12-30-2008, 11:14 AM
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I ran an 8.3 in the 1/8th on motor with bolt ons and that cam. It ran a 12.40 in the 1/4 on motor and it ran 8.0 flat 1/8 th with a 80 shot and 12.00 flat in the 1/4. On the juice my stock clutch slips and that was shifting at 6,200. My sig shows 4.10s but it actually has 3.42s. So something is definately wrong. I am also using the stock lt1 knock sensor. But I have a trifecta tune. Definate problems there.

D
Old 12-30-2008, 01:54 PM
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Like the others have said, shifting that low with that cam leaves alot on the table. However there is more problems than just that. I shift there with a stock motor and click off high 12's low 13's. Something else is wrong in the package. It SHOULD be quicker than the #'s you are producing even shifting that low.
Old 12-30-2008, 01:59 PM
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What is the alt.? I didn't see that mentioned!!
Old 12-30-2008, 03:39 PM
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Looks like he races at National Trail raceway, east of Columbus, Ohio.



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