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EDELBROCKPART NUMBER: 350-60489
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
- Big Block Chevy 396-502ci
1987-1995 454 TBI engines will yield 8.8:1 compression ratio - 100cc Combustion Chambers
- Port Volume: 290cc/110cc
- Bare, 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.
Valve Lift Intake Exhaust .100' 73 71 .200' 143 128 .300' 207 153 .400' 251 178 .500' 284 200 .600' 299 218 .700' N/A N/A Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28' H2O
Part TypeCylinder Head
BrandEDELBROCK
Package Height8.19
Package Width10.44
Package Length24.75
Weight36.7 PG
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
Emission50 State Legal
Exhaust Valves IncludedNo
Locks IncludedNo
Engine Make/SizeChevy Big Block (396-502)
Retainers IncludedNo
Guideplates IncludedNo
Rocker Arms IncludedNo
Oiling StyleThrough pushrod
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Valve Seats MachinedNo
Intake Valve Angle26
Heat CrossoverYes
FinishPolished
Valve Springs IncludedNo
UsageStreet/Hi-Performance
Damper Spring IncludedNo
Valve Guides IncludedNo
Cnc-Machined Intake RunnerNo
Intake Valves IncludedNo
Combustion Chamber StyleSemi-open
QuantitySold individually
Cylinder Head TypeStandard
Valve Stem Seals IncludedNo
Intake Valve Diameter2.19 in (55.626 mm)
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)110
Exhaust Port LocationStandard
TypeComplete
Combustion Chamber Volume (Cc)100
Machined For O-RingNo
PreparationBolt On (Not Required)
Steam Holes DrilledNo
Rocker Arm Studs IncludedNo
Cylinder Head StyleBare
Part FitmentSemi Universal
Intake Runner Volume (Cc)290
Cnc-Machined Exhaust RunnerNo
Cnc-Machined Combustion ChamberNo
Exhaust Valve Diameter1.88 in (47.752 mm)
Vendor Part Number60489
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
