The Stovebolt Site Forums The Shop Area General Truck Talk Hydra-Magic Transmission Cross Member

Could someone email me a picture of a 55-59 3100 Chevy truck Hydra-Matic Cross Member. Is it one short stubby mount riveted to the frame on each side with the transmission mounts bolted to the stubby mounts. Thanks [email protected]

Hy mule 1951, you are correct the Hydra-Matic crossmember is a three piece unit. I do have all of the three pieces, I have incorporated the center section into my engine test stand and tied the other two elements to the stand so I can find all of it if I ever need it. I will send you a picture when I get the test stand to a place where I can take a picture.

Thanks very much. Please don’t go to any trouble. Send the pictures at your convenience. [email protected]

There are two short brackets that are riveted to the frame rails.
Then there is a center support cross member that is bolted to the two short brackets.

1955-1959 Chevrolet Truck Factory Assembly Manual --- pdf page 630 Automatic trans instruction

I thought I posted this info but I guess I didn't. The reason for the difference in the H-M cross-member difference is the size and weight of the transmission needed a heavier transmission with an unboltable center section to make it easier to remove the transmission from under the truck. They routed the brake crossover lines differently to run behind the transmission for the same reason.

Thanks