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#65881 09/17/2006 2:42 AM | Joined: Dec 2005 Posts: 27 Junior Member | | Junior Member Joined: Dec 2005 Posts: 27 | I got a rear end from a swap meet and iam trying
to figure out what i got. I sand blasted it today
and these are the #s I found. K174 and GM4 and
HA12 and 3856525 it is 62" from the outside of
the drum to the outside of the drum. its a 12
bolt. and has 6 lug. I did a search but could
not find any help. searched the net and found one
sit that I found one of the #s. it was the GM4 #
rpo# it was a 3.67 gear ratio. but it said this
number was found in the drivers manual. so that is what Iam try to find the gear ratio. and what
it came from? thanks for any help. | | |
#65882 09/17/2006 2:50 AM | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | You can count teeth to find the ratio, or turn the pinion and count the axle shafts at they turn together.
Can't help other than that.
I bet a picture would help someone id it for you. | | |
#65883 09/18/2006 1:43 AM | Joined: Jul 2006 Posts: 49 Member | | Member Joined: Jul 2006 Posts: 49 | divide the number of teeth on the ringgear with the number of teeth on the pinion to get the ratio.
64 c10
89 rs
62 econoline
50 ford coupe
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#65884 09/18/2006 1:43 PM | Joined: Jun 2005 Posts: 887 Shop Shark | | Shop Shark Joined: Jun 2005 Posts: 887 | Pull the cover and look at the ring gear. Somewhere along the edge you'll find a series of numbers. Two of those numbers are for the teeth on the ring and pinion gear.
My GM 12 bolt has the numbers "7 GM (six numbers) 11 41 s 02" stamped on it.
11 pinion teeth to 41 ring teeth means a 3.72 ratio.
Good luck!
'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi
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#65885 09/19/2006 12:12 AM | Joined: Dec 2005 Posts: 27 Junior Member | | Junior Member Joined: Dec 2005 Posts: 27 | | | |
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