Rear axle ID - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BR3W CITY · 02-17-2011, 05:34 PM

The weather has broken enough that I can get back out in the garage, but I need to get some info together.

My rear axle is a 12-bolt, and I was told when I got the truck that its a 3:73 rear end, with posi. I have the code " N 3856525" stamped into the gusset. I can't seem to find a site to decode this. Is this a truck or car rear end?

Rear brakes are drums, it has 5-lugs, and its on my 66 with trailing arms. I couldn't tell if the rear end ever had leaf perches, since it was cleaned up and painted by the po. Its got Moser axles, and I was told it was a 3:73 posi rear. Anyone have a clue what rear this might be?
Thanks!

02-17-2011, 05:34 PM	#1
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Rear axle ID The weather has broken enough that I can get back out in the garage, but I need to get some info together. My rear axle is a 12-bolt, and I was told when I got the truck that its a 3:73 rear end, with posi. I have the code " N 3856525" stamped into the gusset. I can't seem to find a site to decode this. Is this a truck or car rear end? Rear brakes are drums, it has 5-lugs, and its on my 66 with trailing arms. I couldn't tell if the rear end ever had leaf perches, since it was cleaned up and painted by the po. Its got Moser axles, and I was told it was a 3:73 posi rear. Anyone have a clue what rear this might be? Thanks! __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD



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