Rpm/Avenger small block ford all new 2nd generation bare engine block w/ 9.500" deck height and 4-bolt billet main caps - main bearing 351c, available in 4.000" bore, oversized water jackets for uniform cooling, increased web thickness, requires aftermarket link-bar kit for hydraulic roller lifters, lifter bores - standard sbf .875", proprietary oiling system, oversized main oil galley, one piece rear main seal, mechanical fuel pump provision, fuel pump pushrod - standard length, cam journal common o.d. - standard sbf and can be bored to 55mm, oil pump shaft and oil filter - standard sbf, oil pan requires aftermarket unit, oil system - wet sump or svo dry sump - requires external pump for priority main oiling, screw in freeze plugs, standard starter location, timing cover/chain/gear - use standard 351w components, maximum recommended - bore 4.185" and stroke 4.250", approx. weight 205lbs, new ..... machine work also available - bore/hone/deck/clearance/cam bearing installation - call for latest rates, call for other bore size availability, call or text for details, will not respond to emails