Technical Tips > Transmissions - Differentials

diff ratio, not happy

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87droptop:
hi everyone, took my car out for a test run for the first time yesterday, and i know the diff ratio is 4.11, it was not much fun to drive, revvs too high at 60 kmh.....and obviously runs a bit hotter since it produces more heat at higher revs for the same speed, and.. fuel ( that dont matter much), so, any one know what standard ratios these have , 1968, was 350, now 383, and any suggestions to what is good for it??? i was thinking anything around 3.2 or 3.3, if it exists..
thank u all again

MADLT1:
mine is a 3.36 ratio,it a good all rounder,mine is a 383 aswell with 4 speed,revs high on the freeway but good for every day use,other than that if your not worried about originallity what a dougnash 5 speed behind it?

sirfixalot:
Is it manual or auto? There is 3.08 3.36 3.55 ratios, gear set is about $400 to buy then you have to R & R diff & also cost to set up gears in diff, then you do wheel bearing, suspension bushes, uni joints, paint everything while your in there.  

87droptop:
yeah, i've done all that already, it took 2 years... just went thru the whole car, i've never had a 4.11, so i thought i would wait and c how it is gonna drive. $400 for diff gears in the states or here?? if i were 2 change gearbox, maybe to a 5 or 6 speed if possible, then would keep this diff.. how many revs does yours sit on while doing 100 or 110 km/h mate??

87droptop:
and, yes it is manual.

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