best way to determine a rear end gear ratio
11-19-2009, 04:23 PM
#1
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MASTER BUILDER
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best way to determine a rear end gear ratio
what is the formula for determining a rear end ratio. my buddies vega has 26 inch tires,4 speed muncie, and a 355 sbc. he says the cam is a circle track cam and makes power from 3500-about 8000 rpms, say he wanteed to be coming through the traps at about 7800 rpms, what would be the aprox ratio to obtain the desired rpm do i have enough specs to complete the formula thanks chevy art
11-19-2009, 08:41 PM
#2
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You can use this formula EX: if the engine has enough HP to run 120 mph in the qtr.
The gear ratio would be a 5.00 gear. But i'm thinking 4.88's or 4.86 gear would work best. Ofcourse if the HP is higher you'll need to go down on the gear.
Zip.
http://www.wallaceracing.com/calcrgr.php
The gear ratio would be a 5.00 gear. But i'm thinking 4.88's or 4.86 gear would work best. Ofcourse if the HP is higher you'll need to go down on the gear.
Zip.
http://www.wallaceracing.com/calcrgr.php
11-20-2009, 03:43 AM
#3
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