67belvedere/225
Well-Known Member
want to to swap gears , git 3.55 now , but want more launch.
slant six twin Webbers automatic overdrive (gm 700r4 trans)
I fear going 3.90 will make her rev to high on the highways and won't like it.
didn't realize they even made that ratio .
now round 2200 rpm @60 with 3.55
the rpm calculator has it at 3.73 @2270 rpm
and the 390 @ 2380
tempting to go 3:90
the numbers seem off think it would be reving more Around 3000
slant six twin Webbers automatic overdrive (gm 700r4 trans)
I fear going 3.90 will make her rev to high on the highways and won't like it.
didn't realize they even made that ratio .
now round 2200 rpm @60 with 3.55
the rpm calculator has it at 3.73 @2270 rpm
and the 390 @ 2380
tempting to go 3:90
the numbers seem off think it would be reving more Around 3000