LWB to SWB swap - frame differences?
 

I'm converting a 72 LWB to SWB and found a 67 SWB frame. Before I get too far down the road. Are there differences in the frames from 67-72? For example, I measured the radiator support mounts on both frames and there is a difference in the widths. Just want to make sure I know any other differences going in.

Thanks!

:chevy:

Re: LWB to SWB swap - frame differences?
 

All I can add is I discovered there must be MAJOR differences in brake line routing and mounting-'72 disc lines no fitty! Only other thing may be coils or leafs on rear susp.

Re: LWB to SWB swap - frame differences?
 

For 67 frames, I know of the following to be different: Core support mounts, steering box mounts, & no notch outs in the frame around the engine

Re: LWB to SWB swap - frame differences?
 

I think the difference in the core support mounts is the size of the holes. If you measure from center of hole to center of hole I think they are the same. All you would have to do is swap the 72 core support mounts over to the 67 frame unless the 72 ones are mounted lower on the frame. I have never checked that so you would have to check that out. I know the 72 core support rubber mount bushings are thicker than the 67's. The 67 frame doesn't have a recessed area for the later power steering box but you can either put a recess in it or shim the box out. It isn't much, quarter of an inch or so. Some guys don't recommend shimming the box out but I know it has been done. If you shim the box out and have to get longer bolts just make sure they are grade 8. That would be your decision. Other than that you shouldn't have any problems.

LockDoc

Re: LWB to SWB swap - frame differences?
 

Thanks for the info guys. Sounds like not too much to worry about.