350 Bowtie Sportsman Block, 2-Piece Rear Main Seal

• CNC-machined cast-iron competition block
• +/-0.001" machining tolerances
• 4-bolt nodular mains, splayed caps on center three mains
• 3.980" finished bore
• 4.155" max bore (siamese cylinder bores)
• Extra smooth gasket surfaces for better seal
• Tall lifter bores

Tech Specs

Part number: 12480047
Cast number: 10051184
Deck Height: 9.025"
Lifter Pattern: Std
Cyl Wall: Siamese
Bore Range: 3.980" – 4.155"
Main Bolt: 
Main Bolt Degree: 4
Cap Materia: 20°
Crank Jnl Size: Nodular
Oiling: 350
Seal Type: Wet
Max Stroke: 1 pc
Weight (lbs): 3.750"
Max HP: 196
Usage: 500

2-18