Need info if anyone can tell me!!!!!!
 

OK, I got this 70 3/4 ton that the glove box says it has a NO slip rear, can anyone tell me ratio with these #HG86AQ, these are what is on the glove box. Thanks for help, Randy

Hey Randy
See if this helps?

Got'em
 

Hey Randy,they came in and look gr8!!!...
Sorry I can't help you on this thread....thanks again Lewis

Randy, the numbers you gave are the option number for the no slip rear only. According to the info I have depending on the axle code as follows: C20 TAA
THU THW TJU TLN TMZ TNA TNB TOT TTF TWI = 4:10 TYS = 4:56 THV THX THY TIA TIB TJS TJT TOU =4:57 Hopes this helps (if you can still find the axle codes). Harold

What engine and tranny came in it originally?

Looks like its a 4.57 evidently, 292 and a AT. Thanks for the help
Lewis, I'm glad the parts got there OK!!!!!! :D

It had to be a small block, v6 or I6- the no spin axle was not available with big block trucks.

Hmmm: Option G87 on the glove box, Power Loc rear axle. L47 Engine (402). My Chevy book also notes that Posi was not available with the 400 engine but it's on this truck!