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Vehicle Info NeededEDELBROCKPART NUMBER: 350-60499
Performer High-Compression 454-O Oval Port Cylinder Head for Big Block Chevy
$1,36795
3 left in stock
Ships Tomorrow
Lowest Price GuaranteePerformer High-Compression Cylinder Heads
- 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.
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 Height8.0
Package Width11.1
Package Length26.1
Weight43.0 PG
Retainers IncludedYes
Guideplates IncludedYes
Oiling StyleThrough pushrod
Valve Seats MachinedYes
Heat CrossoverYes
Number Of Springs Per ValveDual
Damper Spring IncludedNo
Cylinder Head TypeStandard
Valve Stem Seals IncludedYes
Intake Valve Diameter2.19 in (55.626 mm)
Valve Guide MaterialManganese bronze
Outside Diameter Of Outer Spring1.55 in (39.4 mm)
Steam Holes DrilledNo
Rocker Arm Studs IncludedYes
Retainer MaterialSteel
Cnc-Machined Combustion ChamberNo
Exhaust Valve Diameter1.88 in (47.752 mm)
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
Rocker Arm Nut Thread Size (In.)7/16"-20
Emission50 State Legal
Exhaust Valves IncludedYes
Locks IncludedYes
Engine Make/SizeChevy Big Block (396-502)
Lock Style7 degree
Rocker Arms IncludedNo
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Intake Valve Angle26
Maximum Valve Lift0.7 in (17.78 mm)
Valve Seat MaterialDuctile iron
FinishPolished
Valve Springs IncludedYes
UsageStreet/Hi-Performance
Valve Seat Machine Style3-angle
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedYes
Combustion Chamber StyleSemi-open
QuantitySold individually
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)
Cylinder Head StyleAssembled
Part FitmentSemi Universal
Valve Cover Mounting StylePerimeter bolt
Valve Stem Seal StylePositive stop
Intake Runner Volume (Cc)290
Cnc-Machined Exhaust RunnerNo
Vendor Part Number60499
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
