Tom Wrote,
>I think that the mainshafts are different between the non-syncro and syncro
>overdrive gearboxes. The overdrives are the same. (Can anyone confirm
this?)
>So if you could find a syncro overdrive main shaft (Good luck) you could
make
>it work. Tom
This is absolutely true, but early overdrive units suffer from oil frothing
and leakage out the rear seals under certain conditions. The fix as
implimented on later model O/D units was a pressure balance hose that
connects the planetary section to the main case. This is a modification
that can be made to early units as well, and will make them every bit as
good as the later units.
NOTE: Late model gearboxes use a different O/D adapter, because allsynch
transmitions have a different tail section. Late model gearboxes must be
used with late model adapters or severe oil leakage will result.
Jarrid Gross
SII EFI
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