In-Store Pickup Location Close

Summit Racing® Transmission Crossmembers SUM-770307

Summit Racing SUM-770307 - Summit Racing® Transmission Crossmembers

Loading media

In progress


Transmission Frame Extension, Steel, Black, GM G-body, Automatic, Manual, Each

Estimated Ship Date: Today Would you rather pick it up? Select Location

Brand: Summit Racing
Manufacturer's Part Number: SUM-770307
Summit Racing Part Number: SUM-770307

Transmission Crossmember to Frame Bushing Included: No
Transmission Mount Included: No
Crossmember Material: Steel
Crossmember Finish: Black powdercoated
Quantity: Sold individually.
Notes: This Frame Extension is required for 1978-83 GM G-Bodies when installing a Summit® Tubular Transmission Crossmembers with a 200R4, TH400, T-56 or 4L80E transmission. It adds the second set of crossmember mounting holes to the driver side frame rail in the same location as the 1984 thru 1988 G-Body cars. This part is included with the SUM-770303.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Our Summit Racing® steel transmission crossmembers allow you to run a true dual-exhaust system with most popular GM transmissions. They have a patented double-hump design, so you don't have to compromise ground clearance by running pipes under the crossmember, and they're a complete bolt-on deal--no custom fabricating or realignment is needed. They're made from 2 in. x 3 in. boxed tubing (1/8 in. thick) to handle the frame-twisting power of big blocks.


Most Helpful Reviews Review this Product

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

Back To Results
Email this page Close