These highly versatile blocks are available in a variety of finish options that enable maximum flexibility for building a wide range of engine combos. Most of the blocks have siamesed cylinder walls and 4-bolt main caps that are secured with Grade-8 bolts.
Chevrolet Performance Bowtie Sportsman Blocks have 9.025-inch deck heights. Bowtie Sportsman Block Technical Notes. Standard 9.025-inch deck height Nominal cylinder wall thickness is 0.340-inch Minimum cylinder wall 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 holes for improved head gasket sealing Priority main oiling system Main bearing bulkheads are 0.900-inch thick and use Grade-8 bolts All five cam bearing locations require 2.000-inch O. Bearings P/N 12370843 (except block P/N 10051183) Tall lifter bore blocks may require clearancing the top of the lifter bores for some roller lifters Lifter valley oil scavenging boss below bell housing flange is present, but not drilled and tapped Oil dipstick holes are not drilled Timing system clearance must be checked.Siamesed cylinder walls have thicker cylinder wall material with no water between the bores. This allows for a bigger bore; a bigger bore allows for more cubic inches and more power! 4-bolt mains have more material and more fasteners holding the crank in the block (4-bolts per main instead of just 2). 4-bolt mains help maintain the integrity of the block when you drop the hammer! 4-bolt nodular mains, splayed caps on center 3 mains. 4.155 max bore (siamesed cylinder bores). Comes with rear seal adapter.
Please make sure you are ordering the correct part(s). You have researched and understand what you are ordering.The wrong part is ordered. CHECK OUT MY OTHER LISTINGS. The item "NEW CHEVROLET PERFORMANCE 5.7L V8 350 400 BORE ENGINE Bowtie Sportsman Block" is in sale since Sunday, January 10, 2021. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Engines & Engine Parts\Engine Blocks". The seller is "elliottmotorsports308" and is located in Kearney, Nebraska. This item can be shipped to United States, Canada.