Re: Motor Mount/Stand Connecting Bolts
I just replaced my mounts- HP tall type from 69, to the normal short type for 68 - to install a 350 into a 68.
The removed perches were GM but I dont know if it was original or not, as they are 69 tall type in a 68, although the engine was?? maybe someone swapped them in to the past for some reason.
anyway, therefore, dont know if my bolts were original, but they did not fit super fit,
just normal fit, with about 1/16" at most float of the perch to bolts.
the bolts had head on top, and lock washer and nut on bottom of frame.
may have been heavy hex nut?? the threads appeared normal and not a course thread.
Just make sure they are at least a grade 8 or better.
hope that helps.