Header Install Advice....Headers are in...sorta - Page 6 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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 10-24-2007, 07:45 PM   #51
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I'm running a 2.9" pulley with 1-1.5* of KR from a stop and 2-3* from a roll. I just did about a dozen runs with the same results. 14* of timing at WOT..which is not bad at all in my book.

91 NON-ethanol blended gasoline, 50* outside and 3800ft elevation

I still have the 195* t-stat in the car as well so engine temps are around 200..I'm sure dropping to a 180 and re-tuning my low speed fan to come on at 185 will help things out even better.

With a 2.9" pulley and the pacesetters I'm seeing 10.5-11.2 psi thru most of the powerband and it peaks at 11.4PSI at 6000 rpm.

Before with a 3.2 and stock manifolds I was seeing around 10.0 max psi.

pictures will come soon when I'm done boosting around the countryside
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Old 10-24-2007, 07:50 PM   #52
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Ya, a 3.0" would be about right for you.
Happy boosting.
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Old 10-24-2007, 09:02 PM   #53
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Quote:
Originally Posted by 2000SilverBullet
Ya, a 3.0" would be about right for you.
Happy boosting.
not for the summer, but for the track and for the winter I guess it is probably fine.
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Old 10-25-2007, 01:51 AM   #54
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Don't go up! Go down! Intercooler and 2.8 would be more fun

Lets see pix damnit
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Old 10-25-2007, 08:04 AM   #55
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Wow..am I in the wrong thread. I thought Hans posted about his exhaust here.

On pulley size though.. intercooling isn't his first need to work on a restriction.... Didn't he say he wanted rockers or a cam next? That'* the logical step for our power hungry buddy.
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