Cadillac 365/390 Transmission Adapter Kit | Twisted Torque

Cadillac 365 / 390 V8 Automatic Transmission Adapter Kit

Keep your classic Cadillac power and upgrade the transmission behind it.

Available through Twisted Torque, the PACA101 adapter kit connects a 1956–1963 Cadillac 365 or 390 V8 to compatible Chevrolet, Buick, Oldsmobile and Pontiac automatic transmission bellhousing patterns.

Engine Applications

• 1956–1958 Cadillac 365 V8
• 1959–1963 Cadillac 390 V8

Fitment follows the engine installed in your vehicle, especially on custom builds and previously swapped cars.

Transmission Applications

• TH350
• TH400
• 700R4
• 200-4R

Confirm your transmission’s bellhousing pattern and torque converter combination before ordering.

Kit Includes

• 3/4-inch-thick billet aluminum adapter plate
• Crankshaft adapter
• 168-tooth Chevrolet flexplate
• GM high-torque mini starter
• Complete installation hardware
• Installation instructions

Built for Your Cadillac Swap

Billet aluminum construction: A machined 3/4-inch adapter plate provides the engine-to-transmission connection.

Factory oil filter adapter clearance: A relief machined into the engine side of the plate accommodates the factory oil filter adapter.

No bellhousing cutting required: The adapter installation retains the full Chevrolet transmission bellhousing.

Serviceable starter: Includes a commercially available replacement-style GM mini starter.

Check These Applications First

Contact Twisted Torque before ordering for:

• Cadillac 331 engines
• Early Cadillac engines, particularly 1949–1954 applications
• 4L60E or 4L80E transmission swaps
• Unidentified engines or nonstandard drivetrain combinations

Plan the Complete Installation

This kit supplies the engine-to-transmission connection. Vehicle installation may still require crossmember, mount, driveshaft, shifter, cooler-line or exhaust changes.

A 700R4 or 200-4R also requires properly matched TV cable linkage and adjustment. Torque converter lockup wiring is separate from shift control.

Transmission and torque converter are sold separately. The $875 kit does not include an electronic transmission controller.

Let’s Match Your Build

Send us your vehicle year, engine information and transmission choice. We’ll help you select the right setup before you order.

Twisted Torque | Drive With Confidence

833-858-9612

sales@twistedtorque.com

Manufactured by Performance Adapters. Manufacturer part number PACA101.