Re: 12 bolt from hades
Originally Posted by nashville beth
I'm pretty sure the 66-67 shock mounts are only 1" away from the backing plate while 68-72 are about 3" away.
I think Saltherring is correct; the coil spring mounts are all that need to be fixed on the 69 rear end I have.
But I could be wrong LOL
The only difference is that the axle tube is 0.5” longer on each side outside the brackets all brackets are located same but on later houses theres 0.5” extra clearance to the backning plate.
The shock mount on your 12 bolt is moved and not in oem location. Oem they are a reinforcement if the lca bracket, so it can be vise to put it back where it belongs.
Since its not a nr matching car I think the value wont be affected much if all with a later rear as long as you fix the spring mounts and have it rebuilt. If only a driver you can save money and reuse your current ends and go with c-clip axles.
If you want the narrow version othervise just use 68-72 axles and leave it. Theres info telling that 67 used narrow housings with flat 65-66 spring mount and 68-72 wider housings with 68-72 spring mounts+ a narrow hybrid version with 68-72 spring mounts. I cant verify if true or not?
Chevelle Malibu ss 64
489 BB with parts from Lewis racing
Alumitech radiator with dual spals
Th 400 Edge 9.5" converter
57 3/4” wide 12 bolt: Eaton posi, Us gear 3.31, Toms KA 33 splines axles
Last edited by Malibu ss 64; May 16th, 19 at 2:55 PM.