Edelbrock Cylinder Head SB Chevrolet Performer RPM E - Tec 170 for Hydraulic Roller Cam Complete (Ea)

The Edelbrock 60975 E - Tec cylinder head is replacements for 302, 327, 350 400 c.i.d. SB Chevy engines with Vortec - style manifolds. They feature an LT1 - style raised runner intake port design for increased air - flow and ultimate performance. A unique combustion chamber design positions the spark plug closer to the center of the cylinder, promoting a more efficient combustion resulting in more power. This cylinder head includes an adjustable rocker stud and guide plate set - up for use with adjustable rockers or washers to properly position the stud height to accommodate factory style self - aligning rocker arms. They have 20 more exhaust flow than a cast iron Vortec head, great performance up to 6000 rpm and can produce 9.51 compression with stock pistons in 350 cubic - inch engines. RPM E - Tec head is dual - drilled and will accept 1987 - 95 center bolt andor 1986 prior perimeter flange mount valve covers and most stock exhaust manifolds. E - Tec 170 head is 50 - state street legal.