Originally Posted by db flyer
I have a stock 56 chev. with th350 trans. and 3.36 gears in rearend. I want to
go with a higher ratio. I have heard that a 3.23 or 3.08 3rd member would fit in my stock rearend housing? Any thoughts or suggestions if these would fit, and where to start looking for one. Craigslist?
Some info that may help you w/locating/ID'ing a different rear end is here
. I'm not sure the factory had a 3:23 ratio then. But IMHO a 3:23 ratio will not be enough of a difference to bother with, 3000 rpm would become 2884 rpm by going to the 3:23.