Standard deck height, Standard Cam height, Standard cam journal with 1.8 lifter spacing and .904 lifters. 1/2 inch head bolts. Prefer a 4.280 bore, Blocks can be dry or water, Blocks must be able to take a KB front cover bolt pattern. Also need 2 - 4-3/8 inch Stroke, 2.75 Main journal, Billet crankshafts with standard snout with double key-way. Parts are for 426 hemi style motors. No junk Please, would prefer new old stock if possible. Old blocks were Stage VI Keith Black. Contact Marlo 503-678-2six7eight. 10AM-4PM, Pacific Standard Time.