Should I stay in 3rd or shift to 4th....
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From: Front Royal, VA
Should I stay in 3rd or shift to 4th.... 10 bolt w/stock 3.42 gear, my problem is I am shifting to 4th right before the finish line and trapping 111/112. Shiftlight is set for 6500, so I'm going through at 5100 in 4th which is horrid.
I'm guessing I should trap 114-117 with the f13(stock heads+ all bolt ons)
According to the gear calculator: (http://www.f-body.org/gears/)
6300 108
6400 110
6500 112
6600 113
6700 115
6800 117
6900 118
7000 120
According to my logging software 6452rpm=107mph(3rd), 6620rpm=110mph(3rd)
So do I bump the rev limiter and go through the traps at 6800-6900 or so?
Car is making good power, 390rwhp @ 6250rpm in 95temps & high humdity with no correction.
Thanks,
I'm guessing I should trap 114-117 with the f13(stock heads+ all bolt ons)
According to the gear calculator: (http://www.f-body.org/gears/)
6300 108
6400 110
6500 112
6600 113
6700 115
6800 117
6900 118
7000 120
According to my logging software 6452rpm=107mph(3rd), 6620rpm=110mph(3rd)
So do I bump the rev limiter and go through the traps at 6800-6900 or so?
Car is making good power, 390rwhp @ 6250rpm in 95temps & high humdity with no correction.
Thanks,
I say go for it and stay in 3rd if you aren't goin past 7000. The mph will be better if you don't shift. Just becareful not to pass the 7000 mark. I would put the rev limiter there or just before to save the car. Later...
I would maybe get some 3.73's if your budget allows. I used to have the same problem until I put my 12 bolt with 3.73's in and then I was able to wind out 3rd and shift 4th to cross the traps at about 114-116 mph.
Last edited by Packy; Oct 27, 2005 at 11:21 AM. Reason: more info
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From: Albuquerque NM - The Land of 8000ft DA
What kind of tire are you on? Slick?
You should be good for a tad over 112 in third if you're on a 26" slick.
Your calcs might be close if your on a regular street tire.
You should be good for a tad over 112 in third if you're on a 26" slick.
Your calcs might be close if your on a regular street tire.
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Thread Starter
12 Second Club
iTrader: (2)
Joined: Feb 2004
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From: Front Royal, VA
Originally Posted by sscam68
What kind of tire are you on? Slick?
You should be good for a tad over 112 in third if you're on a 26" slick.
Your calcs might be close if your on a regular street tire.
You should be good for a tad over 112 in third if you're on a 26" slick.
Your calcs might be close if your on a regular street tire.
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