Rear End Gears

[Indian113]

Originally Posted by ol_skool_chevy

I will assume your running a V8, what RPM are you running at 55MPH with your 3:73 and 700r4? tire size will make a sort of differace also but i didnt see you list that....

Yes I have a mild 350,28 inch tall tires. I have no idea what my RPM's are as I don't have a Tach. I can tell you I rarely run 55 as I drive a lot on 4 lanes and 65-70 feels a lot like 55 did with the 350 trans I had.