Gear & Tire question

Meaney124 · 12-04-2023, 08:05 PM

Quote:

Originally Posted by 1320racer

1/8th mile?
cam specs?
converter size, flash rpm and fall back rpm
stock suspension?
footbrake?

check my other reply, really wondering how it will affect et and mph in case I decide to do any local index classes

Keith 944 · 12-04-2023, 08:11 PM

Summit has a gear ratio calculator on their site. Plug in the info it should get you close

goinbroke2 · 12-05-2023, 10:54 PM

So, you must be trapping about 118mph at 6500?
33 to 29 inch tire jumps you from 6475rpm to 7367rpm. (approx)

http://wallaceracing.com/calc-gear-tire-rpm-mph.php

Keith 944 · 12-06-2023, 07:45 AM

Quote:

Originally Posted by goinbroke2

So, you must be trapping about 118mph at 6500?
33 to 29 inch tire jumps you from 6475rpm to 7367rpm. (approx)

http://wallaceracing.com/calc-gear-tire-rpm-mph.php

A 7.50 car going 118????
Don’t know if he mentioned it is 1/8 mile. Lol.
I do believe some of these calculators have 1/8 mile data

12-04-2023, 08:11 PM	#2
Keith 944 VIP Member Join Date: Feb 2006 Location: Dela-where? Posts: 2,195 Likes: 1,163 Liked 1,885 Times in 578 Posts	Re: Gear & Tire question Summit has a gear ratio calculator on their site. Plug in the info it should get you close __________________ KEITH MAYERS 2-1/2 X somebody Still many X nobody

12-05-2023, 10:54 PM	#3
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 902 Likes: 1,715 Liked 405 Times in 158 Posts	Re: Gear & Tire question So, you must be trapping about 118mph at 6500? 33 to 29 inch tire jumps you from 6475rpm to 7367rpm. (approx) http://wallaceracing.com/calc-gear-tire-rpm-mph.php