Re: 3sp to 4sp manual
Adger, that was just talked about. That came about because supposedly you could take a BW T-85 three speed with overdrive and with some case modifications install a T-10 separator plate and tail housing with 4-speed guts. I don't know for a fact it was ever done, but some old Ford guys claimed it and argued that it should be legal. It falls into all that stuff about what do you do with a 5-speed od manual and 4-speed od automatic: Is it a 5 speed so you can run a Liberty or Doug Nash or Jerico 5-speed. Is it a 4-speed so you could build a 4-speed automatic?
Wait for the rule book. After all, what passes tech is what is legal, not what the factories built.
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