Edelbrock 60985 E-Tec-200 Small-Block Chevy Cylinder Head Hydraulic Roller Cam

  
Fits 302, 327, 350 & 400 SB Chevy engines with Vortec-style manifolds with hydraulic roller camshafts & mechanical flat tappet only. Combustion Chamber Volume (cc): 64. Intake Runner Volume (cc): 200cc. Exhaust Runner Volume (cc): 80cc. Outside Diameter of Outer Spring in.

Number of Springs Per Valve: Dual. Valve Stem Seals Included: Yes. Valve Stem Seal Style: Positive stop. Rocker Arm Studs Included: Yes. Rocker Arm Nut Thread Size: 3/8 in.

Rocker Arm Nuts Included: No. Guideplate Pushrod Size: 5/16 in. Valve Cover Mounting Style: Center and perimeter bolt. Accessory Bolt Holes Drilled: Yes. Valve Guide Material: Manganese bronze.

Valve Seat Machine Style: 3-angle. Valve Seat Material: Ductile iron. Notes: Fits engines with "Vortec-style" manifolds. Includes valve springs for use with hydraulic roller camshafts & mechanical flat tappet only.

To use stock rocker arms, 0.100 in. S/B Chevy heads may not be used on engines with less than 4 bore 262, 265, 283, 305, 307 c. Except with cams having less than. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4 reach with flat gasket seat.

Engineered for maximum performance, the new E-Tec Series aluminum cylinder heads fit all small Chevys with Vortec-style intake manifolds. They incorporate Edelbrock's new high-quench 64cc combustion chamber design, which promotes a more uniform atomization of the air/fuel mixture for increased power. Available with 170cc or 200cc intake runners, these cylinder heads are assembled with one-piece stainless steel valves, 1.46 in. Valve springs, retainers, and locks. The E-Tec models accept either centerbolt or standard valve covers, and work with most exhaust manifolds and headers. Match your vehicle specs to the correct Edelbrock head for precise fitment.