Big Block 8.1 Adapter Plates

Precision laser cut from High Carbon 3/8 Steel. Designed with 3 different mounting positions- the original bell housing position, the next set of holes moves the engine 5/8" forward, and the last set moves the engine 1 1/4" forward from the original bell housing position. Designed to position the truck 8.1 oil pan to clear most cross members. Direct bolt in for 1958-72 3 bolt style Chevrolet motor mounts. When using these mounts with 1973 and newer clam shell style mounts the steel outer shell may need to be modified. Sold in pairs, left and right. Includes all necessary zinc coated grade 8 bolts.

* May require notching front cross member using industrial oil pan.