SBC CTR/BLT PERFORMER CYL. HEAD COMPLETE.
EDELBROCK 60859

SBC CTR/BLT PERFORMER CYL. HEAD COMPLETE.

Performer Centerbolt for 1987-95 Small-Block Chevy.

Performer For 1987-95 Centerbolt Designed for 1987-95 Throttle Body Injected (T.B.I) and Tuned Port Injected (T.P.I) 5.7L S/B Chevy engines originally equipped with centerbolt valve covers. Performer centerbolt cylinder heads are 50-state Street legal and accept factory centerbolt valve covers. The intake bolt pattern utilizes the 1987-95, 73 angle on the two center bolts. Will Maintain stock compression ratio when used with the recommended head gasket. Made in USA. Cylinder Head Specifications

Combustion chamber volume 60cc Intake runner volume 165cc Exhaust runner volume 65cc Intake valve diameter 2.02" Exhaust valve diameter 1.60" Valve stem diameter 11/32" Valve guides Manganese bronze Deck thickness 5/8" Valve spring diameter 1.46" Valve spring maximum lift 0.575" Rocker stud 3/8" Guideplate Hardened steel Pushrod diameter 5/16" Valve angle 23 Exhaust port location Stock Spark plug fitment 14mm x 3/4 reach, gasket seat Made In USA

Technical Notes: Sold individually. Requires the use of hardened push rods. Bare heads will have valve guides and seats installed, but will require final sizing and valve job to match the valves you will be using. To use stock stamped steel rockers on small-block Chevy heads, +.100" longer than stock Edelbrock pushrods #9629 or equivalent are required. Small-block Chevy heads may not be used on engines with less than a 4.00" bore except with camshafts with less than .450" valve lift.