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RWA1675-BM is a 2.3 stock stroke crankshaft for the big main journal blocks. These are stock cranks that we hand select, inspect and then machine. If the crank journals clean up with a polish, then that is all we do. If the cranks need more work to get them cleaned up, we will cut the journals down till they clean up. The most common is .010 or .020.
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Out of stock1678 2.3 Crankshaft Cut for 5.7" stock Chevy 250 rods. 2" and widened. Main bearing sizes vary.
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RWA1675-SM is a 2.3 stock stroke crankshaft for the small journal blocks. These are stock cranks that we hand select, inspect and then machine. If the crank journals clean up with a polish, then that is all we do. If the cranks need more work to get them cleaned up, we will cut the journals down till they clean up. The most common is .010 or .020.
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The RWA1676 2.5 small main journal crankshaft is stock 2.5 crankshaft. This crank is a drop in for the small journal blocks. If you are using a earlier large main journal block, you will need to use our bearing spacers. The crank has the same rod journal size as the stock 2.3. We offer pistons for the 5.2" and 5.7" rod set up. Fully counter weighted. Rods & mains turned to the next size available.