Hydramatic



  1. Hydramatic Transmission For Sale
  2. Hydramatic Transmission Identification
  3. Hydramatic 315
  4. Hydramatic Transmission For Sale

Rebuild of the 4-Speed Hydra-Matic Transmission

1954 Chevrolet 3100 (1/2 ton)Truck - RPO (Regular Production Option) 314
photos byGene Berck- Restoration Hydramatics
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result ofbad rear-main (drive shaft) seal
1954 Chevrolet Hydra-Matic
time for aan engine rebuild?





















































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1954 was the first year the Hydra-Matic was used in a Chevrolettruck
1954 was the last year for the enclosed (torque-tube) driveshaft in 1/2ton trucks
the Hydra-Matic transmission was first used in a 1939 Oldsmobile
the Hydra-Matic transmission was used in WWII light tanks
the dual-range Hydra-Matic 1952 GMC PM-150-22
in 1953, GMC provided an optional Hydra-Matic in 100-250 series trucks (1/2 to to 1 ton trucks)
in 1955, GMC provided a 21 forward-speeds Hydra-Matic in large trucks


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Of course, the main focal point is the Hydramatic shift selector attached on the column below the steering wheel. For the new owner not acquainted with a Hydramatic, a paper sheet is slid over the sunvisor pad.

TransmissionHydramaticHydramatic transmission history

The first year of the Chevrolet pickup with a Hydramatic transmission was 1954. Though it did not find a large percentage of buyers, this truck did open the door for an increasing number of this transmission in the coming years.

In 1968-69, the United States government contracted out orders for M16s from Harrington&Richardson and also GM Hydramatic to boost war time M16 production. Today, Hydramatic continues to service transmissions in the Boston area at the Dedham location which is owned by Paul DiFranco, son of Pete DiFranco. Though transmission technology has changed, our commitment and passion to the industry has remained the same. We continue to service all types of transmissions and be your dealership alternative. 1946 - 1955 Hydra-Matic Transmission 'On the Car' Adjustment Service Manual (Original page scans contributed by Greg Hill). An Established, Proven History. Hydromatic has been a national leader in the wastewater pump industry since 1959. Today, Hydromatic continues to design and manufacture one of the most extensive and diversified lines of submersible wastewater sump, sewage, effluent, grinder and large solids handling pumps for the municipal, commercial and residential wholesaler market sectors.

When sitting in the 1954 Chevrolet truck cab with this new option, some changes are immediately noted. To operate the starter motor on the original six cylinder, a button is pushed with the driver’s thumb just above the headlight switch. The ignition switch still has 2 positions as earlier years.

Hydramatic

Hydramatic Transmission For Sale


The truck with a Hydramatic has an automatic choke on the carburetor, there is no need for manual pull choke. Thus, GM installed a small blank out plug in the hole where the choke lever is usually found (at the left of the radio position). At the right is another plugged hole which is usually for a throttle lever.

Hydramatic Transmission Identification

Of course, the main focal point is the Hydramatic shift selector attached on the column below the steering wheel.


For the new owner not acquainted with a Hydramatic, a paper sheet is slid over the sunvisor pad. It lists the instructions for successfully operating those types of transmissions.

Hydramatic 315


Hydramatic Transmission For Sale

An interesting feature on the Hydramatic: Turn off the engine while stopped in reverse and the transmission is in park!