Greetings Inliners . . .

I have read a couple articles, as well as, several postings here about the benefits of moving away from the 4.11:1 ratio gears that came stock on 40's era chevys.

The swap of choice appears to be 3.55:1.

How hard is this swap? What else in a stock '49 rear-end needs to (or SHOULD) be replaced during such major surgery?

Any advice will be greatly appreciated.

regards,
stock49

[Linked Image from 49fastback.com]