Did GM make a ????????????? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sam's 72 · 02-22-2004, 07:28 PM

I was wanting to know if there is a gear ratio offered for our trucks, ( 12 BOLT ) that is in between 4.11 and 4.56? I see where there is one for a Ford nine inch. Lke a 4.33 or 4.35. Let me know??

walker · 02-22-2004, 07:36 PM

Try this link, the ones in red were the stock ratios the other ones were aftermarket. I would just to the Summit, or Jegs sites and see what is available.

http://my.core.com/~faldrich/axleratio.htm

lukecp · 02-22-2004, 07:49 PM

The lowest gear offered in a 12-bolt i n these trucks is 4.11. You can get lower gears from the aftermarket and have them swapped in.

BTW Walker, that link you posted is for the passenger car 12-bolt, which is quite different that the truck 12-bolt. Many more ratios were offered for the car version, and i hear it is stronger too.

sam's 72 · 02-22-2004, 07:53 PM

It don't have to be GM SORRY I am wondering if this gear is available for our trucks 4.33 or 4.35

dinnut · 02-22-2004, 09:22 PM

you can always swap a ford nine inch into your truck with that gear ratio in it. same bolt pattern. some modifications required though.

02-22-2004, 07:28 PM	#1
sam's 72 Senior Member Join Date: Nov 2001 Location: Pasadena, Texas, USA Posts: 1,005	Did GM make a ????????????? I was wanting to know if there is a gear ratio offered for our trucks, ( 12 BOLT ) that is in between 4.11 and 4.56? I see where there is one for a Ford nine inch. Lke a 4.33 or 4.35. Let me know?? __________________ 72 LWB chevy truck. Pasadena, Texas

02-22-2004, 07:36 PM	#2
walker Registered User Join Date: Jul 2003 Location: north of Phx AZ about 30 miles Posts: 698	Try this link, the ones in red were the stock ratios the other ones were aftermarket. I would just to the Summit, or Jegs sites and see what is available. http://my.core.com/~faldrich/axleratio.htm __________________ Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold

02-22-2004, 07:49 PM	#3
lukecp Formerly yellow72custom Join Date: May 2001 Location: Austin, TX Posts: 7,531	The lowest gear offered in a 12-bolt i n these trucks is 4.11. You can get lower gears from the aftermarket and have them swapped in. BTW Walker, that link you posted is for the passenger car 12-bolt, which is quite different that the truck 12-bolt. Many more ratios were offered for the car version, and i hear it is stronger too. __________________ '72 Chevy C10 Mild 350/TH350/3.07. Ochre/White. Old high school ride. '70 GMC C2500 '62 327 4bbl/SM465/4.56-geared Dana 60. White/White. Project or parts truck. '97 Saturn SL DD. 1.9/5-speed. 40+ highway mpg

02-22-2004, 07:53 PM	#4
sam's 72 Senior Member Join Date: Nov 2001 Location: Pasadena, Texas, USA Posts: 1,005	It don't have to be GM SORRY I am wondering if this gear is available for our trucks 4.33 or 4.35 __________________ 72 LWB chevy truck. Pasadena, Texas

02-22-2004, 09:22 PM	#5
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	you can always swap a ford nine inch into your truck with that gear ratio in it. same bolt pattern. some modifications required though. __________________ 70 longbed 496/th400/Ford 9"



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