
TH-400 & TH200-4R Transmission Adapter Bracket Fits 1978-88 GM A/G-Body LS Swap Crossmember p/n 520-12644
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- TH-400 & TH200-4R Transmission Adapter Bracket
- Fits 1978-88 GM A/G-Body LS Swap Crossmember p/n 520-12644
Important Installation Notes: - Integral component of the complete Hooker swap system for this application. Component features unique geometry that is not compatible for use with any other brand of engine mounting components.
- Hooker Headers LS Engine Swap Headers for 1978-88 Malibu/Cutlass/Regal/Monte Carlo
- Hooker Headers transmission crossmember for LS engine swap (p/n 520-12644)
- Hooker Headers exhaust systems (p/n 520-42511 or 520-42512)
- Holley LS oil pan (p/n 510-302-2)
Using ANY components other than what is listed here will result in misalignment and interference issues with these Hooker and Holley components.Features: - Include engine mounting brackets and hardware only. These components must be installed with the compatible Hooker/Holley components to obtain proper installed drivetrain alignment and clearances.
- Provides an engineered 3 to 3.5 degree engine/transmission inclination angle that is critical to obtaining usable U-joint working angles (especially in lowered vehicles) when used in conjunction with Hooker LS engine swap transmission crossmembers for this same application.
- Designed to work with Holley LS oil pan (p/n 510-302-2)
- Engine placement provides compatibility with multiple accessory drive set-ups
- Includes mounting hardware and zinc coated for corrosion protection*Click Here to see the 1978-88 A/G-Body LS Swap Selection Guide
Holley Performance Products and Hooker Headers have partnered together to offer the most versatile and complete swap kits on the market. If you are planning to swap an LS engine into your 1978-88 Monte Carlo, Malibu, El Camino*, Cutlass, Grand Prix, Regal, or Bonneville (A/G-Body), it is important to use components that are designed to work together to ensure a trouble-free install that provides optimized drivetrain geometry and component clearances.
These Hooker engine swap mounting brackets provide an engineered 3 to 3.5 degree engine/transmission inclination angle that is critical to obtaining usable U-joint working angles (especially in lowered vehicles). Specifically designed for bolt-in compatibility with the Hooker transmission swap components and fully compatible with Holley LS swap oil pan and accessory drive brackets. This mounting bracket kit is part of the most comprehensively engineered system of mounting components, headers and exhaust systems available for this application. The entire Hooker swap system is designed to decrease your total swap installation effort and cost, while increasing the engineered quality of your vehicle and compatibility of these components with other popular aftermarket components. Use of any non-Hooker brand transmission crossmember or headers will have adverse effects on the ease of installation, component clearance, ground clearance and engine inclination angle (3° with Hooker engine mounts and transmission crossmembers) you can expect from your installation. With these components installed, your driveline will be purposely configured with compound U-joint angles, due to the chassis-centered alignment of your engine/transmission and the stock pinion offset of your rear differential.
These brackets are designed to be used in conjunction with stock OE clamshell style engine mounts (as installed on all 1972-81 Camaro vehicles) that will be retrofitted into the swap vehicle through the use of the specially designed spacer plates included with this kit. The OE clamshell mounts and the long horizontally installed bolts used to secure them to the Hooker brackets are not included with this kit and will need to be purchased separately. In order to achieve the intended fitment and clearances of these components, it is highly recommended that new clamshell mounts (Anchor brand p/n 2292 or equivalent) be installed at the time of installation.
These headers were specifically designed for compatibility with:


