Checkmate

iTrader: (2)

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,

00SS4780

iTrader: (3)

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...

Packy

iTrader: (11)

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.

BriancWS6

iTrader: (18)

For optimum results, it's time to swap those gears out to something steeper.

Bryan @ Speed Inc.

iTrader: (19)

to get the best time with your current set up stay in third. but i agree... you need to gear that bitch up! go w/ 4.10's - but beware. stock 10 bolts suck.

Humming Bird

spray it so you'll have reason to shift into 4th

SScam68

iTrader: (20)

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.

Checkmate

iTrader: (2)

Nitto drag radial stock size(stock 17 inch wheel).