Robert Wiseman wrote:
> My car originally came with and OD so I presume my rear end was 4.22.
> Somewhere alone the line the OD was removed but I presume that I still
> have the 4.22
>
> Recently there was some info on how to determine which rear end I have
> by turning the drive shaft on rev and seeing how many times the wheel
> turns. 4.22 or 3.89. Is this correct?
>
> Also. I do have a spare 3.89, if mine turns out to be 4.22. What would
> I benefit by swapping and what would I lose.
>
> Rob
Hello Rob & Listers:I've just gone through this, having determined I do have
a 4:22 rear on my Series V. I have found a used overdrive that's being
rebuilt so I'm sticking with the 4:22. The downside with the 4:22 (if you
don't have an overdrive) is higher than "normal" RPMs at high speeds. The
upside is you get better acceleration with the 4:22 than the more standard
3:89. Discussion on the list has revealed that some of the Series V
production run did include non-overdrive cars with 4:22s so your car may
never have had an O.D. The 3:89 without overdrive will give "calmer"
cruising speeds, but will not be as "quick" off the line. My current 4:22s,
without the O.D. in yet, make for pretty "buzzy" and noisy driving above 60
MPH.
Steve Sage
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