Ross Racing Engines has announced their new Lacey & Morse transmission adapter system designed to directly mate a 350 or 400 turbo automatic transmission to 1949-64 303, 324, 371 and 394 CID Oldsmobile engines with no further modification. The adapter kit also fits early 1949-54 Cadillac applications.

Bellhousing adapters are CNC machined from aluminum billet. Flexplates are anodized aluminum with a steel ring gear. Ross offers both the adapter kits as well as complete bolt-in assemblies (transmission already fitted with the billet bellhousing adapter, converter, and flexplate). Features factory side motor mount provisions. Complete kits can be tailor-built per specific applications.

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  • Transmission rebuilders

    Many times an industry cannot wait days or weeks for a rebuilt model. Transmission rebuilders should know the importance of speedy service when it comes to the major industries that use remanufactured industrial transmissions and strive to keep popular parts in stock and ready to ship the same day as an industry places an order. If a transmission rebuilder does not offer same day shipping, the company placing the order should move on to a more professional transmission rebuilder, dedicated to delivering a quality product in a timely manner.

  • Transmission rebuilders

    Any transmission rebuilder, or remanufacturer of Allison transmissions, should only use the most current rebuilding technologies. Remanufacturing techniques change constantly in a quest to create stronger, longer lasting transmissions. The most current factory technology updates directly from the original builder to ensure the durability of every reconstructed transmission. Any company ordering a remanufactured transmission should question whether the rebuilder receives and uses constant factory updates in rebuilding.

  • Automatic Transmission

    I don’t have any information on the transmission adapter. JC Whitney used to be a good source for those, but they’ve dropped most of that type of equipment from their listings. Have you considered the 4 speed hydromantic that was available with your 303? That trans has really low first and seconds gears, and will probably outperform the 4 speed, at least until you hit third gear. The hydromantic would also be period correct for your rod!

  • Don Harmon

    I am looking for a Chevrolet 700r adapter to a Oldmobile 1954 324 engine.

  • Remanufactured Chevy Engines


    Its wonderful post guys, I liked your writing work guys……………

  • Westsidex15

    Im looking for a adapter plate for my 1961 olds 394 motor i wanna go with ov tranny 700r4 ?

  • Judy Jackson

    Thanks for sharing this. Will let my dad check this out. -