New Hydramatic (cast iron case) Overhaul Kit for 1949 -1955 Cadillac, 1951-1956 Hudson, 1950-1954 Kaiser, 1949-1954 Lincoln, 1951-1956 Nash, 1952-1954 Oldsmobile, 1951 Pontiac, and 1955-1956 Pontiac sent to anywhere in the world serviced by the US Postal Service except the USA via Priority Mail® (485.00+119.15 shipping and handling). Cast iron Hydramatic, Jetaway AKA Stratoflight, and Powerglide are some of our common monthly units. We also offer transmission soft and hard parts for all transmission 1941 to present. Units can be removed and shipped to our Salinas, California, transmission shop. We will rebuild your unit and ship it back to you in a reasonable time. Hydramatic (Standard and Dual Range) Also known as Single and Dual Path. The Dual Range was introduced for the 1952 model year. NOTE: This was the 'original' Hydramatic, but GM called MANY of their later transmissions 'Hydramatic'.

Hydramatic (Standard and Dual Range)

Also known as Single and Dual Path.

The Dual Range was introduced for the 1952 model year.

NOTE: This was the 'original' Hydramatic,
but GM called MANY of their later transmissions 'Hydramatic'.

Used 1939-63 in various Olds, Pontiac Cadillac, Hudson, International, Nash, Kaiser and Lincoln models. Also used in GMC and Chevrolet trucks.

(Please note that GM later used the Hydramatic name for MOST of their transmission models starting in 1964)

There were many versions of this transmission and many parts do not interchange among them.

Hydromatic Diaphragm Pressure Switch

Distinguished from a Jetaway by having no park position and a quadrant of N-D4-D3-L-R and

12 bolt pan

Santa Rosa Hydramatic

This was a cast iron cased, hydraulically controlled transmission.

Hydromatic

Band adjustment for dual range:
Front = 1/3@
Reverse = 1/3@

Turbo Hydramatic Identification

@ Loosen band adjustment all the way. Start engine. Shift the manual lever to low. Tighten band adjustment until it stops. Turn engine off (it will loosen with engine off). Count the number of turns it takes to re-tighten and back off 1/3 that number of turns.