These billet aluminum conversion plate adapters are designed as a true bolt in adapter plate for installing a GM LS series engine into various chassis types that use a 3-bolt engine mount. They will place your LS engine in the correct position when swapping from a small or big block Chevrolet engine to a LSseries engine and have four different motor mount placement positions.
1stposition: places the LS engine in the stock SBC location
2nd position places your LS engine forward 7/16" (11mm) from the original SBC location
3rdposition: places your LS engine forward 1-3/4" (44mm) from the original SBC location
4th position places your LS engine forward 2-1/4" (57mm) from the original SBC location
Includes left and right adapter plates and all necessary grade-8 hardware. These LS conversion plates will not work with low mount AC compressors.