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EDELBROCKPART NUMBER: 350-60499U
*USED Performer High-Compression 454-O Oval Port Cylinder Head for Big Block Chevy
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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
Performer High-Compression Cylinder Heads
- *USED
- Big Block Chevy 396-502ci
(1987-1995 454 TBI engines will yield 8.8:1cr) - Valve Springs for Hydraulic Flat Tappet
- Port Volume: 290cc/110cc
- Valve Size: 2.19"/1.88"
- 100cc Combustion Chambers
- Assembled, Sold Individually
Designed for 1987-95 TBI-equipped big-blocks, these new 50-state emissions legal (E.O. #D-215-33) heads have a 100cc combustion chamber for an increase of over one full point of compression to 8.8:1 on 7.4L TBI engines. The result is a dramatic performance improvement in these late-model vehicles. These heads and our Multi-Point EFI on a 7.4L engine made 353 hp and 457 ft/lbs. of torque on the dyno. Available assembled with top-quality components that include 1-piece, stainless steel, 2.19' intake and 1.88' exhaust valves, ARP 7/16' diameter rocker studs and ductile iron seats with a three-angle valve job. Features include stock port locations and 9/16' thick decks for superior gasket retention. Mark IV rocker arms and valve train parts are required.Tech Tip: To gain more spark plug clearance, Edelbrock recommends using Champion RC Series plugs such as the RC12YC (P/N 192-49776). They are 0.230' shorter than a conventional spark plug and have a 5/8' hex for easier access.
Part TypeCylinder Head
BrandEDELBROCK
Package Height6.9
Package Width10.0
Package Length24.4
Weight42.02 PG
Part CategoryPerformance Parts
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
