Victor Jr 23° Cylinder Head for Small Block Chevy

Vehicle Info Needed

EDELBROCKPART NUMBER: 350-77599

Victor Jr 23° Cylinder Head for Small Block Chevy

Name: Victor Jr 23° Cylinder Head for Small Block Chevy
Brand: EDELBROCK
SKU: 350-77599
Price: 1233.95 USD
Availability: InStock

^$1,233⁹⁵

Ships on 09/09/2026

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Victor Jr. 64cc Aluminum Cylinder Heads

1986 & Earlier Small Block Chevy 302-400ci
Valve Springs for Mechanical Roller
Port Volumes: 215cc/85cc
Combustion Chamber size: 64cc
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:	64cc
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 Seat

Valve 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

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Part TypeCylinder Head

BrandEDELBROCK

Package Height8.5

Package Width10.7

Package Length26.0

Weight32.8 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)64

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)215

Cnc-Machined Exhaust RunnerNo

Vendor Part Number77599

Package Qty1

Package TypeEA

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