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The Edelbrock throttle body adaptor plate converts an LS1-style 80mm throttle body to mate with a 90mm EFI elbow. It’s a thin sealing plate required because the larger 90mm opening on Edelbrock elbows exceeds the LS1 throttle body sealing area. Included with part 3847, it mirrors the 2732 carburetor adaptor design for simple, reliable sealing when adapting LS1 TBs to 90mm elbows.
Edelbrock Adaptor Plate LS1 Tb to 90mm Opening
