Part Number: 510-207 Utilizes the Gen IV LS7 valve-train and intake manifold. Designed for any new Gen IV short-block with 4.125" bore or larger. Uses a 2.200" intake valve and 1.600" exhaust valve Has a 285cc intake port Has a deck thickness of .750" 70cc Combustion Chamber Standard ***Due to the thicker deck and higher valve cover rails some beauty covers are not compatible. When using Corvette (Y-Body) front accessories alternator may need to be clearanced. Flow Data w/4.125" Bore Plate Lift Intake Exhaust 0.100 76 65 0.200 163 118 0.300 245 171 0.400 307 212 0.500 350 229 0.600 379 245 0.650 388 247 0.700 395 249
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