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Performer RPM Small Block Aluminum Angle Plug Cylinder Heads
- 1986 & Earlier Small Block Chevy 302-400ci
- Valve Springs for Hydraulic Flat Tappet
- Port Volumes: 195cc/65cc
- Combustion Chamber size: 64cc
- Valve Sizes: 2.02"/1.60"
- Angled Spark Plug
- Assembled, Sold Each
Designed for non-emissions 302, 327, 350 and 400 c.i.d. engines up to 1986, these heads made 420 horsepower with the Performer RPM Power Package for small-block Chevys. Hardened pushrods are required.
Installation Notes: When using stock rockers on SB-Chevy Performer & Performer RPM heads, .100' longer than stock pushrods are required. Due to valve-to-cylinder bore interference, SB-Chevy heads may not be used on engines with less than 4' bore (262, 265, 283, 305, 307 c.i.d.) except with camshafts having less than .450' valve lift.
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.Combustion Chamber Volume: 64cc Intake Runner Volume: 195cc 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: 9/16' 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 SeatValve Lift Intake Exhaust .100' 63 51 .200' 124 94 .300' 181 128 .400' 227 146 .500' 253 157 .600' 253 163 .700' N/A N/A Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28' H2O
Part TypeCylinder Head
BrandEDELBROCK
Package Height8.7
Package Width11.0
Package Length26.0
Weight24.55 PG
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
EmissionNon-Emissions
Exhaust Valves IncludedNo
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Guideplates IncludedNo
Rocker Arms IncludedNo
Oiling StyleThrough pushrod
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Valve Seats MachinedNo
Intake Valve Angle23
Valve Seat MaterialPowdered metal
Heat CrossoverNo
FinishCast Aluminum
Valve Springs IncludedNo
Spark Plug StyleAngled
UsageStreet/Performance
Damper Spring IncludedNo
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedNo
QuantitySold individually
Cylinder Head TypeStandard
Valve Stem Seals IncludedNo
Intake Valve Diameter2.02 in (51.308 mm)
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)65
Exhaust Port LocationStandard
Valve Guide MaterialManganese bronze
TypeBare
Combustion Chamber Volume (Cc)64
Machined For O-RingNo
PreparationRequires Professional Preparation (Bare)
Steam Holes DrilledNo
Rocker Arm Studs IncludedNo
Cylinder Head StyleBare
Valve Cover Mounting StylePerimeter bolt
Intake Runner Volume (Cc)185
Cnc-Machined Exhaust RunnerNo
Cnc-Machined Combustion ChamberNo
Exhaust Valve Diameter1.6 in (40.64 mm)
Package Qty1
Package TypeEA
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