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Tech Question
Darryl Pyle, Dunnville, 1970, dodge, charger, 318
Will 2.45 and 3.21 interchange in an 8.25 b body rear?
Darryl-
In a word: yes. Any ratio will fit the housing fine. But the 2.45:1 gearset requires a different differential case than 2.76 and up. You didn't say which way you're swapping, but either way, the diff, Sure Grip or not, will have to change. This is because the 2.45 gears, if they had been designed for the standard differential, would have been so thin that there would have been no room for the attatching bolts - and crazy glue isn't very good at holding ring gears in place.
By the way, the even-more-insane 2.26 gearset used the same diff as the 2.45s.
Rick
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