There are a few different drive gears that mate with the driven gears. By Jody Haag's comments in threads, for a 4.56 rear ratio, the drive gear should be 6 teeth while the driven gear should be 20 teeth. This would eliminate an adapter. There are 2 different diameter drive gears also and corresponding driven. They must be matched.
Interesting thread here. Certainly not definitive, but educational.
https://www.camaros.net/threads/munc...o-gear.218963/
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Mitch
1970 Chevelle SS
1966 Chevelle SS
1967 Camaro ss/rs
1938 Business coupe, street rod
2000 FXSTS, original owner, 13k miles
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