CA401 1949-1953 Cadillac 331 to Chevy Automatic


Materials Included:

(1) Adapter Plate - Olds/Cadillac 1949-1964 to Chevy
(1) Crank Adapter - Olds/Cadillac 1949-1964 to Chevy
(1) Torque Converter Drive Plate
(1) Flexplate
(1) Starter
(1) Starter Block - Multiple Olds/Cadillac applications
(2) Dowel Pin .621 x 1
(8) SSHCS 7/16-14 x 1
(6) 7/16-20 x 3/4 Flexplate Bolts
(6) SHCS 7/16-20 x 3
(1) 143N Tooth Ring Gear
(3) 7/16 H Extra Thick Washer
(3) 7/16 Flat Washer


Are you planning on using a modern a GM 4L60E, 4L65E, and 4L70E (2008 and earlier only) or GM 4L80E and 4L85E transmission with this kit? By adding a US Shift Quick 4 stand-alone transmission controller you will save $100 dollars off of the cost of your Speed Gems adapter kit. 

We have additional options from US Shift. Please give us a call or email us if you're not seeing what you need!


*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Speed Gems is not responsible for return shipping costs of mismatched kits.

Installation Instructions

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