Quote:
Originally Posted by stevep
John Sawruk told me that the Roto was an Oldsmobile design, which, to me, explained why Olds only had them.
Is that correct?
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Roto is a design by HydraMatic Division.
At first Oldsmobile Division was to use the transmission, however Oldsmobile didn't sell enough cars to make Roto pay for itself, therefore the Corporation directed Pontiac Division to use them in their short wheelbase cars.
All Oldsmobile's with automatic's got them including the model 5 ( small version of the 10 ) for F-85 and Cutlass ( 1961 -1963) and model 10 All large full size from 1961-1964.
All short wheelbase Pontiac B bodies ( Catalina, Ventura, Grand Prix ) got Roto model 10 from 1961-1964.
All long wheelbase Pontiac's continued to ues Super HydraMatic known by it's creator ( HydraMatic Division ) as Controlled Coupling HydraMatic.
Cadillac also continued to use Controlled coupling to 1963. In 1964 some Cadillac's used Controlled coupling while other models along with some Buick's got the new ST400 Torque converter automatic. That automatic was a switch pitch T400.