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Victor Jr. 70cc Aluminum Cylinder Heads
- 1986 & Earlier Small Block Chevy 302-400ci
- Valve Springs for Hydraulic Roller
- Port Volumes: 215cc/85cc
- Combustion Chamber size: 70cc
- Valve Sizes: 2.08"/1.60"
- Angled Spark Plug
- Assembled, Sold Each
These heads have .300' raised exhaust ports and hardened, ductile iron valve seats and phosphor bronze guides. A 9/16' thick deck surface provides superior gasket retention. Valves are 1-piece, stainless steel.
Installation Notes
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 conventional spark plugs and have a 5/8' hex for easier access. 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.Combustion Chamber Volume: 70cc Intake Runner Volume: 215cc Exhaust Runner Volume: 85cc Intake Valve Diameter: 2.08' Exhaust Valve Diameter: 1.60' Valve Stem Diameter: 11/32' Valve Guides: Manganese Bronze Deck Thickness: 9/16' Valve Spring Diameter: 1.55' Valve Spring Maximum Lift: 0.670' Rocker Stud: 7/16" Guideplate: Hardened Steel Pushrod Diameter: 5/16' Valve Angle: 23° Exhaust Port Location: +.300 Spark Plug Fitment: 14mm x 3/4' Reach,
Gasket SeatValve Lift Intake Exhaust .100' 67 64 .200' 119 112 .300' 177 153 .400' 226 188 .500' 265 207 .600' 281 217 .700' 285 220 Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28' H2O
Part TypeCylinder Head
BrandEDELBROCK
Package Height6.7
Package Width10.3
Package Length24.1
Weight32.81 PG
Retainers IncludedYes
Guideplates IncludedYes
Oiling StyleThrough pushrod
Valve Seats MachinedYes
Heat CrossoverNo
Number Of Springs Per ValveDual
Spark Plug StyleAngled
Damper Spring IncludedYes
Cylinder Head TypeStandard
Valve Stem Seals IncludedYes
Intake Valve Diameter2.08 in (52.832 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 Diameter1.6 in (40.64 mm)
Part CategoryPerformance Parts
Cylinder Head MaterialAluminum
Intake Port LocationStandard
Rocker Arm Nut Thread Size (In.)7/16"-20
EmissionNon-Emissions
Exhaust Valves IncludedYes
Locks IncludedYes
Engine Make/SizeChevy Small Block (262-400)
Lock Style7 degree
Rocker Arms IncludedNo
Rocker Arm Nuts IncludedNo
Cylinder Head FinishNatural
Intake Valve Angle23
Maximum Valve Lift0.65 in (16.51 mm)
Valve Seat MaterialDuctile iron
FinishCast Aluminum
Valve Springs IncludedYes
UsageCompetition
Valve Seat Machine Style3-angle
Valve Guides IncludedYes
Cnc-Machined Intake RunnerNo
Intake Valves IncludedYes
QuantitySold individually
Accessory Bolt Holes DrilledYes
Exhaust Runner Volume (Cc)85
Exhaust Port LocationStandard
TypeComplete
Combustion Chamber Volume (Cc)70
Machined For O-RingNo
PreparationBolt On (Not Required)
Cylinder Head StyleAssembled
Valve Cover Mounting StylePerimeter bolt
Valve Stem Seal StylePositive stop
Intake Runner Volume (Cc)215
Cnc-Machined Exhaust RunnerNo
Vendor Part Number77619
Package Qty1
Package TypeEA
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