gm 14 bolt - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1972 CST · 01-04-2011, 09:23 PM

hey, i have a 1986 gm 14 bolt and i was wondering if anyone could tell me where the identiification numer is on the axle so i could find out what gear i have.

thanks

csb#356 · 01-05-2011, 03:54 AM

pretty sure you need to go inside and it says on the ring gear. it'll say something like 41 11 and you would divide that to be 3.73. I Don't think it says on the outside unless theres a tag attached to one of the bolts, but I could be wrong to.

mudmizer · 01-08-2011, 01:29 AM

csb#356 is correct there is no "casting #" on the outside indicating the ratio. Just the tag and I may not trust that totally, get inside.

01-04-2011, 09:23 PM	#1
1972 CST Registered User Join Date: May 2009 Location: new york Posts: 216	gm 14 bolt hey, i have a 1986 gm 14 bolt and i was wondering if anyone could tell me where the identiification numer is on the axle so i could find out what gear i have. thanks

01-05-2011, 03:54 AM	#2
csb#356 Registered User Join Date: May 2009 Location: Pinehurst, Idaho Posts: 311	Re: gm 14 bolt pretty sure you need to go inside and it says on the ring gear. it'll say something like 41 11 and you would divide that to be 3.73. I Don't think it says on the outside unless theres a tag attached to one of the bolts, but I could be wrong to.

01-08-2011, 01:29 AM	#3
mudmizer Registered User Join Date: Jan 2007 Location: Bellingham, washington Posts: 260	Re: gm 14 bolt csb#356 is correct there is no "casting #" on the outside indicating the ratio. Just the tag and I may not trust that totally, get inside. __________________ 68 4x4, 454, 4 speed, disk brakes both ends, Sold my 69 SS396 Elcamino when young & stupid



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