[digtaz]

I am looking to replace the rear end in my 1970 GMC K10 truck. I was told by the previous onwer that the rear is a 2.73 gear. It is a full slip. I want a 3.27-3.55 posi. I have never worked on a rearend so would not like to change gears and dif. myself. I am also on a limited budget so will probably turn to a junkyard unit. Anybody know what years/engine sizes/suspensions would be compatible with my 1970GMC K10 coil all around.
Thank you very much
<img src="confused.gif" border="0">

[digtaz]

For clarification I mean “what years/engine sizes/suspensions” should I look for in a donor truck. For instance I know that they put lower gears in K20 that may have the same suspension my truck has.

[trees]

Digtaz, did not know Jimmys had coils on the rear in 70, so you are in luck. Any 69 thru 72 Chevy 1/2 ton should bolt right in, axle and all or you can just change out the 3rd member. Same years Jimmy should work too if you can find the coils. K 20 will not work unless you want 6 bolt wheels.

Trees

[digtaz]

Trees sorry I put K10 instead of C10 I have a pickup not a Jimmy. It has 6 lug wheels. I am thinking of a disk brake conversion for the front so if I can find a truck with disk front and 3.27-3.55 rearend that would be cream!

[dmorris1200]

Ok I don't get it. I was under the impression that C and K were both pick-ups. C refering to 2-wheel drive and K refering to 4-wheel drive. I know that's how GM does the Chevy trucks, K1500 = 4x4 1500 truck and a C1500 = 4x2 1500 truck.

[digtaz]

After reading it a second time I think he was refering Jimmy = GMC. I thought he ment GMC Jimmy = Chevy Blazer that kind of Jimmy. I was trying to relay that I have a 1970 GMC Pickup truck 2WD. That is why it has coils all around. sorry for the confusion <img src="confused.gif" border="0">