Rear axle enhancements to tolerate higher engine power output

Posted by greybeard On 2024/6/25 19:27:40

1939 Packard Six. Contemplating an engine swap. Suspect the stock rear axle would not respond well to torque and horsepower numbers in the 300+ range. Can the axle gears be replaced with others with a higher power rating? Or is the best option to just replace the axle with something like a Ford 9 inch? Any insight would be appreciated.