Frame similarities

[woodwright]

I'm trying to start the mockup of my NV 3500 and divorced 205 in my 70 k10. I don't want to tear the truck all apart until I have all the mounts built. I have a 2wd frame sitting here, is it dimensionally the same as the 4wd frame? I can see a few differences, like the 2wd rails are thinner. What else is different? I'm not gonna swap frames, I just want to use the 2wd frame for mockup.

[lovnthe70]

Originally Posted by Dieselwrencher

That is not true at all. I just did my 1972 Longhorn and I have done my 1976 C30. I used both 2wd frames and installed the 4wd brackets from donor frames. The front hanger is a bolt on with 4 bolts, drill 2 in the lower flange and bolt them as well. The rear shackle hanger can be done a few different ways but is definitely doable. The front of the frames are not a different width either. The 4wd crossmembers don't fit perfect but do bolt in the 2wd frames. You will have other things to change as well like trans crossmember, steering box, brake lines, ebrake cables, but it is definitely doable.

i pulled this from a 4x4 conversion thread i was reading earlier, and there seems to be no difference in the width.

[woodwright]

Thanks lovnthe70, What I mean by thinner is the rail itself is 2 1/4" wide on the 4wd, but narrower on the 2wd. As long as the frame kickup is the same I should be ok.

[woodwright]

I just found this. Guess I should have searched better, sorry

Linky