Product Details

BOWTIE SPORTSMAN BLOCKSStep up to serious street/strip performance when you select a Chevrolet performance Sportsman Block. This iron blocks administer a rock-solid structure for any application in the 350 – 500-horsepower range, be it traction strip, circle monitor or high-performance street machine. These extremely versatile blocks are available in a variety of finish choices that allow maximum versatility for building a wide selection of engine combos. Most of the blocks have actually siamesed cylinder walls and also 4-bolt main caps that room secured through Grade-8 bolts. Chevrolet power Bowtie Sportsman Blocks have actually 9.025-inch deck heights.

Bowtie Sportsman Block technical Notes:• standard 9.025-inch deck height• in the name cylinder wall thickness is 0.340-inch• Minimum cylinder wall surface bore thickness top top 4.155-inch bore is 0.225-inches (excluding P/N 10051181, 10051183, and also 10185047)• Extra-thick deck surfaces have blind-tapped bolt holes for enhanced head gasket sealing• Priority key oiling system• key bearing bulkheads are 0.900-inch thick and use Grade-8 bolts• all five cam bearing locations require 2.000-inch O.D. (1.867-inch I.D.) bearings P/N 12370843 (except block P/N 10051183)• tall lifter bore blocks may require clearancing the top of the lifter bores for part roller lifters• Lifter valley oil scavenging boss below bell housing flange is present, however not drilled and tapped• Oil dipstick holes room not drilled• Timing mechanism clearance must be checked

350 Bowtie Sportsman Block, 1-Piece Rear main Seal• CNC-machined cast-iron compete block• +/-0.001" machining tolerances• 4-bolt nodular mains, splayed cap on facility 3 mains• 3.980" finished bore• 4.155" max bore (siamesed cylinder bores)• Extra-smooth gasket surface for much better seal• tall lifter bores• Comes with rear seal adapter

Specs:Part Number: 12480174•Casting Number:10051184•Deck Height: 9.025" •Lifter Pattern: typical •Cylinder Wall:Siamese•Bore Range:3.980" - 4.155"•Main Bolt: 4 •Main Bolt Degree: 20°•Cap Material:Nodular•Crank journal Size: 350•Oiling: Wet•Seal Type:1 Piece•Max Stroke: 3.750"•Weight (lbs): 196•Max HP:500•Usage: Amateur

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Step up to major street/strip performance once you choose a Chevrolet power Sportsman Block. This iron blocks administer a rock-solid structure for any application in the 350 – 500-horsepower range, be it drag strip, circle monitor or high-performance street machine. These very versatile blocks are obtainable in a range of finish alternatives that enable maximum flexibility for structure a wide selection of engine combos. Most of the blocks have actually siamesed cylinder walls and 4-bolt main caps that are secured through Grade-8 bolts.

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Chevrolet power Bowtie Sportsman Blocks have actually 9.025-inch deck heights.

Bowtie Sportsman Block technical Notes:• standard 9.025-inch deck height• in the name cylinder wall thickness is 0.340-inch• Minimum cylinder wall surface bore thickness on 4.155-inch bore is 0.225-inches (excluding P/N 10051181, 10051183, and 10185047)• Extra-thick deck surfaces have blind-tapped bolt feet for boosted head gasket sealing• Priority main oiling system• main bearing bulkheads room 0.900-inch thick and also use Grade-8 bolts• all five electronic came bearing locations require 2.000-inch O.D. (1.867-inch I.D.) bearings P/N 12370843 (except block P/N 10051183)• high lifter boring blocks may require clearancing the top of the lifter bores for some roller lifters• Lifter valley oil scavenging boss listed below bell real estate flange is present, however not drilled and also tapped• Oil dipstick holes space not drilled• Timing device clearance need to be checked

350 Bowtie Sportsman Block, 1-Piece Rear key Seal• CNC-machined cast-iron vain block• +/-0.001" machining tolerances• 4-bolt nodular mains, splayed caps on center 3 mains• 3.980" finished bore• 4.155" max bore (siamesed cylinder bores)• Extra-smooth gasket surfaces for far better seal• tall lifter bores• Comes v rear seal adapter

Specs:Part Number: 12480174•Casting Number:10051184•Deck Height: 9.025" •Lifter Pattern: typical •Cylinder Wall:Siamese•Bore Range:3.980" - 4.155"•Main Bolt: 4 •Main Bolt Degree: 20°•Cap Material:Nodular•Crank newspaper Size: 350•Oiling: Wet•Seal Type:1 Piece•Max Stroke: 3.750"•Weight (lbs): 196•Max HP:500•Usage: Amateur