Is this statement true? "In 1962 the Bonneville had a 4 speed automatic, while the Catalina and Grand Prix had a 3 speed auto (slim jim), which was not one of GM's better transmissions." Just curious. If so, what tranny would this 4 speed auto be?
It's true. The trans in your Bonneville is a super-hydramatic or sometimes called jetaway......it's a dual-coupling hydramatic and way better than the Roto unit.......but .....not the same as the early hydros that B&M and others converted into "beefed hydros".
These trans were used by Pontiac from about '56 until '64. They have a very low first gear.That is why most Pontiacs from the era have 2 series gears and still have great acceleration. Is that wheel in your avatar a Rader? I have a pair like that.
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