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09-20-2008, 05:19 PM
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#1 |
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Registered User
Join Date: Sep 2006
Location: st pete
Posts: 404
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regear my 72
i am looking at a re gear on my 72
any suggestions its a 12blt rear and 44 frt not sure of factory gears i run 33's but plan for 35's and i tow trailers daily (every size) and right now my motor is pulling double duty with the big tires and trailers PLEASE HELP ME
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_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's |
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09-20-2008, 06:06 PM
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#2 |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: regear my 72
It kind of depends upon what you are looking to achieve. You say that you are towing daily, which would lean toward lower gears than you have now....but at what speed?
If you are looking for lower gears, yet still need to run highway speeds, you might be better served by switching to an over-drive of some sort. It really would help to know what you have now too. |
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09-20-2008, 06:10 PM
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#3 |
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Account Suspended
Join Date: Feb 2004
Posts: 3,051
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Re: regear my 72
Most people with 35's, a decent torque-y motor will run 4.10's with that... If you have an OD trans, you could go 4.56's.
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09-20-2008, 11:03 PM
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#4 | |
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Registered User
 
Join Date: Oct 2006
Location: Evans, Colorado
Posts: 530
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Re: regear my 72
Quote:
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09-21-2008, 09:02 AM
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#5 |
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Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
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Re: regear my 72
I tow a 4000 # boat and I have 4.09 gears with 35 in tires. I bought a gear vendors OD and it got my highway RPM's down to around 2000 at 65 MPH Also allows me to split gears when climbing hills
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69 Chevy 4x4 383 Power 
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09-21-2008, 07:31 PM
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#6 |
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Registered User
Join Date: Sep 2006
Location: st pete
Posts: 404
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Re: regear my 72
how can i find my current ratio and i only run in town not sure what RPM range
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_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 1972 K10 4"lift 33"tires (soon to be bigger and better) 2000 silverado 1500 2wd 2"coil spacers3" BL 285/75/16's |
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09-22-2008, 10:02 AM
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#7 | |
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Post Whore
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,689
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Re: regear my 72
Quote:
Just over 3 driveshaft revolutions to 1 tire revolution = 3.08 gears About 3 3/4 revolutions = 3.73 gears Just over 4 revolutions = 4.10/4.11 gears Just over 4 1/2 revolutions = 4.56 gears etc.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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