Tub and Frame mounting locations

[Twisted78SS]

Hey guys,

Need a bit of help on this one. Does anyone know the true difference in mounting locations or heights between a 75 and 86 Blazer tub?

I have been searching the threads, but no luck..

I have a great opportunity to get a rust free tub (an 86') that will end up on my 75 4x4 frame..

Thanks,

Drew



Is this a correct assessment? I found this via google

There is an important difference between the 73-77 K5 body tubs and the 78-91 tubs. The corresponding difference can also be found in the frames. The 78-91 era has a footwell behind the front seats and a second set of outboard body mounts. The 77 and older have no footwell, and a pair of inboard mounts coming off a crossmember. The problem is the frame rises up about a foot further back on the newer trucks to accomodate the footwell.

A new body on an older frame means that footwell part will interfere with the frame, and either way you'll have to remake or retro fit the body mounts in that area. It may just take channeling that part of the floor so it drops down and clears the frame...

[Captkaos]

That is a correct statement. Save me some typing too!

[Twisted78SS]

Thanks,

I think I will just remove the parts I need and stick to the tub I have.

[Jonboy]

Yep. There are no rocker boxes in the 86 tub either. If you were going to cut the windshield pillar and swap to a full removable top, the body tends to flex at the doors. My 77 2wd was cut and had a little flex to it, especially with the top off. The picture I saw of the 75 made it look pretty decent. I think you would be a lot happier using that tub for parts, IMO.

[Twisted78SS]

Yeah, agreed. The more I researched it and then did another assessment on my ride, I will just use what parts I need and go from there.

I might even had left overs to get rid of...