Excel Spreadsheet - RPMs - Gear Ratios

[wayno]

I have seen in several posts and at this moment can't find the calculation for determining RPMs with the inputs being the rear end gear (in this case 3.73s) and the ratios for the transmission (new TKO 500) -

1st 3.27
2nd 1.98
3rd 1.34
4th 1.00
5th 0.68

looking to run 20x8.5 - 255/40/20's - can anyone point me at that excel doc so I can plug these numbers in and see what things are going to look like. Thanks in advance.

-W

[hop sing]

[QUOTE=wayno;5954900]I have seen in several posts and at this moment can't find the calculation for determining RPMs with the inputs being the rear end gear (in this case 3.73s) and the ratios for the transmission (new TKO 500) -

1st 3.27
2nd 1.98
3rd 1.34
4th 1.00
5th 0.68

looking to run 20x8.5 - 255/40/20's - can anyone point me at that excel doc so I can plug these numbers in and see what things are going to look like. Thanks in advance.go to randy's ring and pinoin site they have gear ratio caculator there that will help u out ,,

[hop sing]

[quote=hop sing;5954986]

Originally Posted by wayno

I have seen in several posts and at this moment can't find the calculation for determining RPMs with the inputs being the rear end gear (in this case 3.73s) and the ratios for the transmission (new TKO 500) -

1st 3.27
2nd 1.98
3rd 1.34
4th 1.00
5th 0.68

looking to run 20x8.5 - 255/40/20's - can anyone point me at that excel doc so I can plug these numbers in and see what things are going to look like. Thanks in advance.go to randy's ring and pinoin site they have gear ratio caculator there that will help u out ,,

oh ,,i got a tremec 5sp in my 69 camaro w/3.55 gear and i am turning 2400 rpm at 70-75

[wayno]

Thanks hop - will check their calculator out. 75 would be amazing - sounds like she's going to explode at 65 now lol

[kieth]

Originally Posted by wayno

I have seen in several posts and at this moment can't find the calculation for determining RPMs with the inputs being the rear end gear (in this case 3.73s) and the ratios for the transmission (new TKO 500) -

1st 3.27
2nd 1.98
3rd 1.34
4th 1.00
5th 0.68

looking to run 20x8.5 - 255/40/20's - can anyone point me at that excel doc so I can plug these numbers in and see what things are going to look like. Thanks in advance.

-W

send me a PM with your email, I will need the height of the tire from the ground to the top of the tire, if you want to see any other variables give them to me at this time. what engine and what hp and rpm if you have it. Kieth

if your tires are 30" high your speed at 2000rpm in 5th gear will be 70.38mph

if your tires are 28" high 2000 rpm = 65.68mph