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383 Stroker Based eng..110 Dish 2 reliefs (4.040 bore x 3.750 Stroke) press or floating pin,coated skirt350 engines using a 400 SBC crank with 5.7 rods. Pistons sold insetsof 8 only, price shown is each.Ring dimensions 5/64, 5/64, 3/16Dome Shape;.110 Dish;2 valve reliefsCompression dist 1.425Deck Clearance .025Skirt Clearance .0010Compression ratio by CYL head CC Part number CID 58.0cc 60.5cc 64.cc 68.cc 72.cc 76.cc H859CP 377 10.16 9.89 9.55 9.18 8.85 8.55 H859CP20 381 10.24 9.98 9.63 9.26 8.93 8.62 H859CP30 383 10.28 10.02 9.67 9.30 8.96 8.65 H859CP40 385 10.33 10.06 9.71 9.34