The 4.3 gears on 165x15 radial tires will cause the engine to rev 3497
at 60 mph.
5.50 original Dunlops
5.60 repro Firestones
I think your tach is reading high. Even with the 165x15 radials, the
4.3 should be slowing the engine to 3750 rpm at 64.35 mph. Allowing 5%
for differences in rolling circumference, 5000 is still way too high.
On Sun, 22 Aug 1999 22:04:07 EDT JVK52TD@aol.com writes:
>I have been following the thread on the changing of the "T" rear end.
>fast are you driving with this change ?? I have had trouble with the
>not standing up to 65-70 mph speeds with the 4.3, even though it will
>faster than that !!! I am at 5000 when I am @ 65 & 5500 @ 70.. Do
>how accurate my tach is....
>John Kinney Danville IL