Time to say goodbye to the freakishly fast GP GT.... - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 10-13-2006, 03:41 AM   #21
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Originally Posted by GTPboy
Man its been a while!

Any updates? Hows the trans?

Updates would be:

Ran 13.22 @ 102, still with no tuning, on pump gas and a 3.4 pulley. This was in very bad race weather (like 85ish IIRC, wtih HIGH humidity). With some tuning I think I could've probably dropped the pulley to a 3.3" on pump gas and ran a 3.2 or so on race gas.

Since then I added a Stage 2 ZZP I/C and also some pacesetters. I'm running a 3.0 pulley with 20.5 degrees timing daily with no tuning and it runs very strong. The trans is shifting awesome after the refresh I just got, doesn't seem to slip anywhere, I actually think I'm going to need to modify some shift points a little now. I'm going to drop to a 2.9" pulley tommarrow and begin tuning.
1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!
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