• High strength aluminum block, 356-T6 grade aluminum
• Splayed 4-bolt, steel billet main caps on 2,3 and 4
• 2-bolt main caps on 1 and 5
• 4.110"-4.115" bore as delivered, cast iron sleeves 4.125"
• 9.5-inch; deck height, accepts small block timing chain, timing chain cover and oil pump
• 2.75-inch crankshaft (351C) main journal diameter. 2.9415-2.9425" diameter finished main bearing bore
• Lifter bores finished .8753"-.8768"
• 2.2032-inch - 2.2052-inch diameter cam bearing bores. Uses cam bearings, part number M-6261-J351
• Maximum stroke 4.250-inch
• Wet Sump Oiling System
• Weighs approximately 110 lbs.