If you are up grading the motor & trans, especially the motor to a V8, why would you run the old rear-end? You probably have 411 or lower gears. Go to a higher ratio rear end, 370 gears would be better. What ever you do, you need to use the correct torque converter to match the trans with the rear end gears to make the trans work right & not heat up.
Darrell, W.L.
1939 Chevy COE tow truck/My Stubbed toe
1939 Chevy 2 door Sedan
Car chat means talks about Chevy's. All other car makers only build transportation.
I don't work on my cars, I entertain my self in my garage, so my nabor tells me.
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