70chevy c20

[schu]

I'm looking to replace the drivetrain on my 3/4 ton 4x4 chevy. The 8 lug rear end burned up so I would like to replace with with higher gears.Also replace the front w/disc brakes 6 lug. Found a 72 K10 blazer parts truck with good drivetrain with 3:73 gearing,possi. Will this fit without changing or relocating the spring berches on the axle ? Would appreciate any information.

thanks, Charlie

[Yukon Jack]

Yes, spring perches will be in the correct location.

[schu]

I read somewhere that there was some difference between c30 c20 and c10 4x4 spring perch width on model changes 67-70 to 71-72 ? Do you know of that difference.
I'm just looking for an easy swap and if the 72 K10 4x4 blazer drive line would replace my my c-20 4x4, I'm good to go. So you know for sure that the width is the same? Appreciate any help.
Thanks ,Charlie

[toddol1971]

some c20's had leaf springs while most had coil. If yours has coils then, the rear from the k5 bazer will need the pads & trailing arm mounts added.

[72 CustomCamper]

All the 4x4's are leaf springs...

Chuck

[schu]

I'm reffering to 4x4 drivetrains.

[toddol1971]

Originally Posted by schu

I read somewhere that there was some difference between c30 c20 and c10 4x4 spring perch width on model changes 67-70 to 71-72 ? Do you know of that difference.
I'm just looking for an easy swap and if the 72 K10 4x4 blazer drive line would replace my my c-20 4x4, I'm good to go. So you know for sure that the width is the same? Appreciate any help.
Thanks ,Charlie

Read above. c30 c20 & c10's are all 2wd. I guess you meant k30 k20 & k10. no biggie. I just thought you were going to salvage an axle off a 2wd to put on your 4x4. If that was the case then some 2wd's were leaf & some were coil.