LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Track again tonight. (Made a 2nd gear pull)

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Old 05-13-2011, 11:26 PM
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Default Track again tonight. (Made a 2nd gear pull)

Brand new track, so traction wasn't the best. And there was some evidence the timing light was a little off. Anyway:

1st pass - 2.5 60' 14.52 @ 100.83
2nd pass - 2.2 60' 14.04 @ 100.83
3rd pass - 2.5 60' 14.92 @ 100.45 (2nd gear run )
4th pass - 2.2 60' 14.00 @ 100.21
5th pass - 2.1 60' 13.88 @ 100.67

No new PRs, but the trap was consistent at least.

Videos tomorrow or Sunday.
Old 05-14-2011, 07:56 AM
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what was the evidence the timing gear was off
Old 05-14-2011, 11:07 AM
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Strange time differences between guys that left the line at the same time, and stayed close for the whole quarter.
Old 05-14-2011, 12:56 PM
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id say with your 60' and mph the et's are where they should be

do you have anything done to the car, beside all the weight stuff removed?

and whats PR's?
Old 05-14-2011, 02:19 PM
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My best is 13.7 @ 96-98 with a 2.1 or 2.2 60'.

CAI, cutout, mild tune. It's shifting too late in the 2nd and hitting limiter, have to get that fixed.
Old 05-14-2011, 06:19 PM
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13.7@98? I'd say the timing gear was off then. I was a consistent 98mph running 14.3-14.5 with the same-ish 2.1-2.3 60'.
Old 05-14-2011, 06:44 PM
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My GTP went 13.86@98 with a 1.98 60' and ran pretty consistent 13.9-14.1.@97-98 MPH with 2.0-2.1 60'. The worse the 60' the slower the ET but you pick up MPH. Which is the only thing really off in his runs. It should have had at least a MPH difference between with a 4 tenths split in 60'.

Now aside from that, a stock gxp should be able to run in and around the 96-98mph range. With the weight out, a cut out, tune, and CAI I would expect 99-102 to be the norm, but also a bit better ETs.
Old 05-14-2011, 06:49 PM
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My car is very inconsistent...

My 13.7 was at a different track, their timing is definitely right. Last night was the first event for that track and there are still kinks to be worked out.
Old 05-14-2011, 06:51 PM
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Also, I can only assume they are all 100 because I was keeping it in 2nd. I should've left it in drive to see since my shift points are raised.

EDIT: GXP and SS run different at the track. SS shift earlier into 3rd as GXP do in drive, unless you had your shifts moved. Which would cause the slower time.
Old 05-14-2011, 10:53 PM
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Videos for anyone interested.

http://www.youtube.com/watch?v=niguu6je0qE

http://www.youtube.com/watch?v=VydRe_aH48U

http://www.youtube.com/watch?v=Pe9hiUL2Mqw

http://www.youtube.com/watch?v=oX2rzBwhfwE

http://www.youtube.com/watch?v=KjjFuw3Xom0

http://www.youtube.com/watch?v=GWUvyBmxxSM

http://www.youtube.com/watch?v=xdFXG_3mu5s
Old 05-15-2011, 09:45 AM
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getting on the limiter is whats hurting you and why your MPH is so consistent. get that fixed and better a 60' and you should be able to go 13.5-13.7@101-102. also your 1-2 shift makes it sound like its got a banger in it.




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