When did gm start useing the end bracket on the direct drive starters and did they all have them after a certain date or only the ones with the high torque starters?
1962 on the 327. They used the brace on six cylinder models too....I think it was kind of hit-or-miss which ones had it.
Photo of the part in question please? I think I know what your asking about, just want to be certain. Keith
Righto, Keith. Off roaders suffered starter nose breakage when landing from short flights without these. Those starter motors weighed a lot, and inertia stepped in... Actually, the 153 tooth bracket is the one we saw most of, it was a curved length of 1" angle iron, holes at both ends, on different planes.
#3965588 was for the big block stuff I think. #3965589 was for the small blocks. Both still look to be available to order from your local GM dealer. $6 to $10 range.