PACA101: Cadillac 365/390 V8 to Chevy/GM/BOPC (ref.TH350/TH400) V8 Automatic Transmission Adapter Kit

Cadillac 365/390 to Chevy/GM & BOP (ref.TH350/TH400) V8 Automatic Transmission Adapter Kit

KIT OVERVIEW

Easily bolt your 1956-63 Cadillac 365/390 to a Chevy, Buick, Oldsmobile, or Pontiac automatic transmission (TH350,TH400,700R4, & 200R4) with this adapter kit.

Please contact us if your Cadillac engine is from 1949-54 as the bellhousing shape and profile is much different, if you wish to use a 4L60/80E behind your 365/390, or if you have a 331.

Key Features:

• 3/4-Inch Thick Billet Aluminum Adapter Plate – Strong, precise, and built to handle high torque.
• Retain your factory oil filter adapter - A relief is milled into the engine side of our adapter plate for clearance to the filter adapter. 
• No Cutting or Bellhousing Mods Required – Retains the full Chevy bellhousing for a true bolt-on installation.
• Starter Included –  Off the shelf and easily replaceable if the situation ever arises.
• All Hardware Included – High-grade bolts and fasteners for a complete, hassle-free install.

What’s Included:

• 3/4” Billet aluminum adapter plate
• Crank adapter
  
• 168 tooth Chevy flexplate
• GM High Torque Mini Starter 
• Complete hardware set + Instructions

Perfect for engine swaps, hot rods, or race builds where the classic Cadillac look and comfort meets modern Chevy/GM drivetrain strength — all with zero fabrication.

For additional questions, please Call, Text or Email us anytime at
608-640-2328 or Sales@Performanceadapters.com

Performance Adapters is not responsible for return shipping. Additional return information can be found in our policy pages. If you have any additional questions, please contact us call, text or email.