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Chevy
- 1986 & Earlier Small Block Chevy
- Designed for SCCA Racing
- Port Volumes: 185cc/65cc
- Combustion Chamber Size: 64cc
- Valve Size: 1.94"/1.55" Valves
- Assembled (Less Springs), Sold Each
These cylinder heads are designed exclusively for the SCCA American Sedan Series Class. To comply with class rules, there is no blending work in the intake entries, exhaust exits or bowl area of the intake or exhaust. Bare cylinder heads will require final sizing of the valve guides and a proper valve job prior to the installation of valves. These heads are engraved with a SCCA approved logo and legal for American Sedan Class.
Installation Notes: - Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using.
- To use stock rockers on small-block Chevy heads, .100" longer than stock pushrods are required.
- Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.
- This head does not include valve springs due to the wide variety of camshafts used in competition.
- Deck thickness: 9/16
- Rocker stud diameter: 3/8"
- Pushrod diameter: 5/16" (width of slot in guide plate).
Valve Lift Intake Exhaust .100' 61 51 .200' 127 95 .300' 185 118 .400' 217 131 .500' 229 137 .600' 237 140 .700' N/A N/A Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28' H2O
Part TypeCylinder Head
BrandEDELBROCK
Package Height8.8
Package Width11.1
Package Length25.7
Weight29.65 PG
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
EmissionNon-Emissions
Exhaust Valves IncludedYes
Locks IncludedNo
Engine Make/SizeChevy Small Block (262-400)
Retainers IncludedNo
Guideplates IncludedYes
Rocker Arms IncludedNo
Oiling StyleThrough pushrod
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Valve Seats MachinedYes
Intake Valve Angle23
Valve Seat MaterialPowdered metal
Heat CrossoverNo
FinishCast Aluminum
Valve Springs IncludedNo
Spark Plug StyleAngled
UsageCompetition
Valve Seat Machine Style3-angle
Damper Spring IncludedNo
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedYes
QuantitySold individually
Cylinder Head TypeStandard
Valve Stem Seals IncludedYes
Intake Valve Diameter1.94 in (49.276 mm)
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)65
Exhaust Port LocationStandard
Valve Guide MaterialManganese bronze
TypeComplete
Combustion Chamber Volume (Cc)64
Machined For O-RingNo
PreparationBolt On (Not Required)
Steam Holes DrilledNo
Rocker Arm Studs IncludedYes
Cylinder Head StyleAssembled
Valve Cover Mounting StylePerimeter bolt
Valve Stem Seal StylePositive stop
Intake Runner Volume (Cc)185
Cnc-Machined Exhaust RunnerNo
Cnc-Machined Combustion ChamberNo
Exhaust Valve Diameter1.55 in (39.37 mm)
Vendor Part Number608979
Package Qty1
Package TypeEA
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