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88962516 - 383 Production Chevy Small Block - 4.005"-4.060" Bore, 9.025" Deck, 2.45" Mains, 4 Bolt Main, Non-Siamesed Bores
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This engine block is used in 1986-99 Gen I heavy-duty applications. It has 4.00" diameter cylinder bores and four-bolt main bearing caps. This block is machined for a one-piece rear crankshaft seal. (Does not include rear seal or adaptor.) This block has machined oil pan rails to clear the 3.80" stroker crank used to create the GM 383 crate engine. These blocks weigh 181lbs.Technical Notes: Cylinder wall thickness is the same as current production engines. The lifter valley is machined for hydraulic roller and flat tappets. Crankshafts with two-piece seals can be installed with adapter P/N 10051118. (Block casting P/N 10243880 or 14093638
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