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Chevrolet Performance Bowtie big block Chevy cast iron engine blocks are CNC-machined. The race-prepared blocks feature blind head and accessory mounting bolt holes, a deck configuration that enables the use of any big block Chevy cylinder head—and cylinder bores that may be safely bored to a 4.600 in. maximum diameter, while maintaining a .250 in. minimum cylinder wall thickness. These engine blocks differ from the production-machined Bowtie versions in certain areas; they start from raw castings and are not "conversions." They also use a rear seal adapter to convert the Gen V/VI one-piece rear main seal to a Mark IV type 2-piece seal that facilitates the use of a widely available Mark IV style crankshaft. The intermediate caps also feature 16 splayed outer bolts, which anchor the caps into the strongest section of the blocks and prevent bearing cap movement under high loads. The main oil gallery on these blocks is relocated and enlarged to a 9/16 in. diameter to allow increased oil flow through the block. These Bowtie blocks have inner head bolt bosses, which allow for better retention of the cylinder heads in high-horsepower applications when the cylinder heads "lift" from the blocks due to high cylinder pressures. Order the style and deck height preferred for your application.
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$4,140.75
S&S Cycle 110 in. Power Packages are the ideal combination of performance and savings to transform your Twin Cam HD without breaking the bank. Bump the early Twin Cam from late 96ci or 103ci to 110ci, as well as add matched cams/cam plate/oil pump and everything else a high performance cam chest needs to reliably make big power. Features: * 4 in. bore bolt on cylinder and piston kit * 10.5:1 compression * Wrinkle black finish * S&S 585 Easy Start cams in either gear or chain version * TC3 oil pump * TC3 cam plate * S&S cam chain tensioners or outer cam drive gears * Quickee adjustable pushrods with tubes * S&S precision tappets * Low-friction ductile cast iron liner * Bolts in with no machining, balancing, or splitting the crankcases * Cylinders fit to pistons--no machining required * All parts required to upgrade to gear drive cam or hydraulic tensioners in one easy to order part number
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$3,345.95
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