starter/flywheel question...
doing an engine swap on a 64 GTO... New motor is a dec 63 build 421. Motor has block mount starter provision. After swapping over the stock 64 389 starter, the flywheel ring gear appears to be too far out, leading to its position at the end of the starter shaft. I'm pretty sure I have the right flywheel, but there is clearly an issue... Thoughts?
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First, the end of the crank hub is smaller on the pre-1964 cranks and need a spacer to use the later flywheel. Did you install one of these? Butler sells these:
The flywheel and starter gear are all the same. I checked 1963 and on up. Below is the specs for the flywheel teeth and starter teeth.
It may be possible that you need a "421" starter. I could not find anything concrete, but it may have used a longer nose and bendix. It looks to me in the pictures that the "stop" bushing could be removed/modified to allow the gear to extend further. But, the bendix would have to be able to pull the gear out to mate with the flywheel teeth.
Have you tried to manually pull the starter gear out to see how it meshes with the ring gear?
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