HELP !!!! HELP !!!! Gear info
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HELP !!!! HELP !!!! Gear info
Car is an M6
28" tire
3800lbs with me in it
close to 700rwhp
7200 rpm red line
i am thinking 3:73
the 681 was @6600rpm on the dyno and you can see it's still going north, i was thinking of trying to pull it to 7000rpm
i think the car should go close to 140mpr in the 1/4
what would be right gear to put in the car for the track....
thanks
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nput Parameters Are the Following:
* Top Speed MPH = 140
* Tire Diameter (Inches) = 28.00
* Peak Horsepower RPM = 6500
Computation Results:
# Computed Best Differential Ratio is 3.87 to 1
# Computed Maximum Differential Ratio is 4.33 to 1
would this be right
* Top Speed MPH = 140
* Tire Diameter (Inches) = 28.00
* Peak Horsepower RPM = 6500
Computation Results:
# Computed Best Differential Ratio is 3.87 to 1
# Computed Maximum Differential Ratio is 4.33 to 1
would this be right
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I used this spreadsheet for an estimated MPH http://www.forcedinductions.com/etcalculator.htm but every car is different so its just a estimate.
#13
Well, since the software I wrote uses your true dyno graph as the input, a dyno graph would help out tremendously, but taking a guess at a general graph for 681rwhp @ 6900rpm & 590ft-lbs @ 5000rpm I got these results. This is all assuming near perfect traction, standard elevation/temp, and no wind, slicks with 4% tire growth, and good shifting, etc.
3.73's: 10.15 @ 137.24 / 5966 rpm / 4th gear
4.10's: 10.10 @ 139.13 / 6645 rpm / 4th gear
3.73's: 10.15 @ 137.24 / 5966 rpm / 4th gear
4.10's: 10.10 @ 139.13 / 6645 rpm / 4th gear
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Originally Posted by lt1_fool
Well, since the software I wrote uses your true dyno graph as the input, a dyno graph would help out tremendously, but taking a guess at a general graph for 681rwhp @ 6900rpm & 590ft-lbs @ 5000rpm I got these results. This is all assuming near perfect traction, standard elevation/temp, and no wind, slicks with 4% tire growth, and good shifting, etc.
3.73's: 10.15 @ 137.24 / 5966 rpm / 4th gear
4.10's: 10.10 @ 139.13 / 6645 rpm / 4th gear
3.73's: 10.15 @ 137.24 / 5966 rpm / 4th gear
4.10's: 10.10 @ 139.13 / 6645 rpm / 4th gear
cool....
the 686 was @ 6600rpm and yes a dynojet