73 Duster build named Fred

fishmens67 said

If you didn't have at least 1000 rpm shift drop what would be the point of shifting.
You might need more rear gear.

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My son went from 4:30
To 4:10
With the converter he’s going to try and I thought it would hurt and it didn’t. And he’s 300 pound heavier, 48 inches small engine, .040 less cam lift.