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Old 09-04-2013, 02:46 PM   #34
Bad70supreme


 
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Drives: 2010 aqua blue SS/RS M6
Join Date: Feb 2010
Location: plainfield, IL
Posts: 2,616
Quote:
Originally Posted by gajagfan View Post
In all my years of drag racing, I never found that to be the case. We were not that fast (10.8's), but if I took the engine past peak power, the times were never as good. It should be noted that shifting the car at 7200 RPM got you to the end of the 1/4 mile just before the rev limiter kicked in (turbo 400 manual valve body with 4500 RPM stall). If I hit the rev limiter in any gear (7400 RPM) things went very south. Your new cam most certainly may have raised the peak power point, and the NPP may benefit you. When you had the better trap speed, did you also have the best ET?
I agree with you when it comes to Auto's! My th400s and my big blocks actually liked to be short shifted into 2nd gear at 5300, then taken to peak at 5600 into 3rd! This would result in my best ETs and traps, I find it different with this engine and M6. If I shift at peak or short shift 2nd like I use to, the car slows down. I tried a hole bunch of different shifts in this car, 2nd gear seems to like 6,400 mabye more if my trans would allow!! shifting 3rd I rev it to the max, I pick up et and speed. This has been the case even when the car was bone stock, I think the manual trans has allot to do with it. A little more RPMs into the next gear seems to help with not have a converter to fall back on.
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217/228 .565 cam, th400 swap with 3600 stall, headers, GPI tune, VR intake, Bo white TB
11.63@ 118.6
11.66@ 119.5
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