59-later that I know for sure, and I think radiator cooling might have started with 56 Jetaway. 55-57 shop books have been kind of elusive for me and not many of those year cars around here either.
Always thought it strange having rubber sections in the trans cooler lines, but when I pulled them off one of my Starfires and found swaged ends on the metal lines, I said, Hmm. Somebody meant to do this. Then there it was in the shop book.
Quote:
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How does this thing know when to shift?
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HydraMatics rely on a
throttle valve rod integrated with the carb linkage to tell them when to shift. The rod moves a valve inside the transmission and changes hydraulic pressures inside it to make the transmission work. That's oversimplified, but that's the principle it works on. PowerGlides and Mopar Torqueflites too, and GM itself came back to TV cables for their OD TurboHydraMatics.
Your man on HydraMatics is Tom Kasper in IL. I'll try to find a number when I get home.
BTW, the vacuum chamber on the fuel pump works the windshield wipers and deluxe heater controls. Guess back then, they didn't fully understand orificing vacuum to reduce it to a workable level for those applications.