The 3-main crank has a smaller pilot shaft hole, so the trans has a smaller
end on the input shaft than the 3 synch for the 5 main.
You can put an early box onto a 5 main with an adapter bushing, but you
can't put the 5 main box onto a 3 main.
> I noticed on ebay a transmission that says it fits the 5 main
> bearing engine.
> Don't all the 3-sync early transmissions also fit the 3-main
> bearing engine as
> well? Any confirmation appreciated.
> Wes Smith
> 64 mgb
> 3-main bearings
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