LSX Bowtie Block (Standard Deck). 3.990" finished Siamese Cylinder Bores (ready to be honed to your specifications). 9.26" semi-finished standard Deck Height (ready to be decked to your specifications). Max 4.250" recommended Stroke. Capable of 364 to 482+ cid. Orange Powder Coat finish. Accepts all Gen III & IV LS Heads, Cranks, Cams, Etc. Approximate Finished Weight: 225 Lbs. (Standard deck.)