There are some things that have been mentioned but got missed. You did not say that this transmission was ever in this truck. You were also told that it was a transmission from a Camaro. About the time the Camaro came out GM started using a larger front bearing in their transmissions, subsequently it has a larger bearing retainer. It is a fact that the larger bearing retainer will not fit in the hole in the early bellhousings.
The bearing retainer is about 1/4 thick and will not let the transmission seat all the way into the bellhousing. This could be your problem.
Fred I believe we have a winner here folks! Well done Fred!
~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer
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