Join Date: Jan 2015
Location: Injun Territory, 'Merica!
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The tops of the rear coil springs changed for '67 to mate up to different upper spring pocket in the frame. Usually, when building an 8.5 A body rear for a street/strip '64-66 A body swap, I make sure the '64-66 car hasn't been rebuilt on a '67 frame. ( ive run across it!) If not, I'll trim the flared tops off the later rearends coil spring perches. next, will cut two slight rectangular pieces of plate steel with my chop saw. will then drill successively bigger hole in the center of each plate. I then finish up tacking and then welding the plate on top of the old coil spring perch. The stock retaining "ear" will then retain the original style cool springs.
Over the years, have also bought quite a few early 12 bolt Chevelle rears and even one early Pontiac 8.2 A-body rear that still had the upper control arm mounts, but had had been RIGGED to go into early Camaro's and Firebirds. Restoring these housings back to original A body rear configuration required carefully removing the universal leaf spring mounts, a bunch of time on careful grinding, and then careful jig placement of lower control arm/shock brackets as well as grinding and replacing the early style coil spring perches. Both brackets and perches can be replaced, but swapping the early coil spring style perches isn't something I'd attempt without minimum of good safety glasses, Dremel cutoff tool, a bench grinder, and an angle grinder. It also takes patience and a steady hand, replacing either entire perches or lwr control arm mounts, just can't get wild with the angle grinder.