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High flowing AFR 227cc intake port small block Chevy angle plug aluminum cylinder heads are available in two stages of performance
SB Chevrolet except 400
8006-4123BLK
0-35 psi SPORT-COMP II 2-1/16 BOOST Includes 10 ft
Dual Valve Spring Set, 441 Spring Rate CO977-16 Shift Kits High flowing AFR 227cc intakeDual Valve Spring Set, 441 Spring Rate 977 16 CO977 16 1. 460" Outer OD, 155@1. 850" Seat Pressure, 1. 195" Coil Bind DUAL VALVE SPRINGS 1. 460" OD COMP Cams offers a wide variety of valve springs to suit a multitude of applications. It is extremely important to use valve springs that will give the recommended spring pressure with the valve both on the seat and at maximum lift. The outside diameter of the recommended spring may require that the spring
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