Re: Transmission Questions

[Kevin Curry <kevin@domain.elided>]

Has the tranny been serviced lately? You may want to have it flushed and try a
synthetic ATF. Going to larger tires and staying with the same gearing will
certainly result in different shift patterns. Depending on how much tread was
worn off of the old tires and if the 31's are brand new, you could be talking
about a sizable change in diameter which would result in significant
engine/tranny performance differences.

Farmer wrote:

> My '74 Travelall has just started showing some shifting quirks, and I'm
> hoping you gurus can help me out here.
>
> Here's the data:
>
> About two weeks ago I put some larger tires on it: 31" vs the older 30"
> tires.  At approximately the same time I noticed that it seems weaker around
> 40 mph when climbing hills, it tends to shift into 3rd late (around 40 - 45
> mph), and it sometimes shifts back & forth between 2nd & 3rd.
>
> Additionally, it has started shifting out of gear into neutral.  This
> generally happens at very low speed when powering through a curve or into &
> out of a deep, broad ditch.  It's only happened a few times so far.
>
> My engine (392) has 177k miles on it, but misses, and has far less than
> perfect compression. My transmission has the same mileage on it, but was
> rebuilt at around 90k.
>
> Question:
>
> Does this sound like multiple problems, or are these symptoms related?
>
> Any recommendations?
>
> Thanks!
>
> Ken Farmer
> pharmer@domain.elided
> 1974 Travelall 100, 392, 3.73, 31" tires, NP205, TF727...

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