the starting point for countless racing engines. These iron blocks are available in a ... . Most of these blocks have siamesed cylinder walls 1 and four-bolt main caps 2 that ... are secured by Grade 8 bolts. All blocks in this family have ... . Bowtie blocks are called out by main journal sizes (i.e., 283, 350 or 400) ... 400) if the bore is not standard to the main size. Example: #24502501 350 Main- 283 ... Bore size has standard 350 main journal sizes, however the bore is ... Notes: 2.00" O.D. cam bearings (1.867" I.D.) P/N 12370843, required at all ... for block 10051183) 0.900" thick main bearing bulkheads, Grade 8 main bolts ... Priority main oiling system Standard 9.025"deck ... height Cylinder bores have a nominal wall thickness of ...
One-Piece Rear Main Seal Race Block (front) GM PERFORMANCE PARTS ... race-prep machining, 4-bolt splayed 4 main caps, and the very highest grade of ... CNCd to +/-.001" machining tolerances! Cylinder decks, front and rear of case, oil pan ... the use of larger bearings Extra thick main bearing bulkhead machined at 5 Premium ... quality main studs SAE 8620 steel main bearing caps Billet wet sump rear main ... use 400 journal crankshafts Priority main oiling system 2-piece rear-main ... bolt holes for improved head gasket sealing Cylinder bores have a nominal wall ... thickness of .340" 0.225" min. cylinder bore wall thickness at 4.155" bore, ... valley oil scavenging boss behind cylinder #8 below bell housing flange is not ... holes are not drilled A. 24502501 350 Main, 283 Bore Cast Iron Bowtie Race Block ...