View Full Version : Chevy's that came stock with 4.56
07-31-2011, 03:54 AM
Is there any chevy trucks that came stock with 4.56 for a 12 bolt and dana 44 with maybe a locker... Trying to find a junkyard find and help would be great i have a 1978 k10... Would much appreciate any info...
07-31-2011, 06:32 AM
RPO codes for 4.56 gears would be G82, GS6, or HC4.
M1008's had a D60 and 14FF with 4.56's and a rear Detroit locker. M1028's had the same, except some kind of LSD or locker up front too.
Ive never seen a regular truck with lower than 4.10's personally. I would think that something with 4.56's would have had to be special ordered, and it would be so uncommon that youd never find it in a junkyard, especially for 1/2 ton axles.
07-31-2011, 10:16 AM
Yea, good luck finding any cheap 4.56 axles. Keep an eye on craigslist though, as you never know what might pop up.
Also look on ebay/forums/craigslist for used/cheap gear sets. I built a few rears when I was a teenager with no experience and they are still holding up pretty good.
07-31-2011, 11:48 AM
I parted two 1 tons years ago that were non-military, one single, one dually, both were 4.56s.
I don't think 4.56s were offered in a half ton, maybe late 70s or in the 60s...
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