Description
Cylinder Head - Victor JR. - Assembled - 2.250 / 1.900 in Valves - 300 cc Intake - 106 cc Chamber - 1.550 in Springs - Angle Plug - Aluminum - Big Block Chevy - Each
Edelbrock Cyl Head BBC Victor Jr 24 Deg Rect Port 300cc 106cc Combustion Chamber
The Edelbrock part #77485 Big-Block Chevy Victor Jr. 24deg cylinder head features an extra thick deck and extra material in the spring pockets for a heavy-duty casting that can be used with high-lift cam and heavy spring combinations. Edelbrock equips the complete 774815 cylinder head with a spring packages to suit hydraulic roller cams. The 300cc rectangle ports produce impressive flow and great power on competition big-blocks up to 510 c.i.d. with 4.310" or larger bore. Exhaust port exits are raised .534" to greatly improve exhaust flow and power.
Additional Information
Edelbrock part #77485 Victor Jr. 24 Degree is a complete cylinder head designed for Big Block Chevy 396-502 V8 engines. The 300cc rectangle ports produce impressive flow on competition big-blocks up to 510 c.i.d. with 4.310" or larger bore.
Application Summary
Chevrolet:Big-Block Mark IV:396 (6.5L)-502 (8.2L)
Part Type
Engine Cylinder Head
Features
- For Complete Heads Use PN[77459]
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Specifications
Product Details
| CNC Ported: | No |
| Camshaft Type: | Hydraulic Roller |
| Combustion Chamber Volume: | 106 |
| Construction Type: | Complete |
| Cylinder Head Type: | Rectangular Port |
| Deck Thickness: | 0.5625 |
| Description: | Victor Jr. Series Cylinder Head |
| EGR Port: | No |
| Emission: | Non-Emissions |
| Engine Make/Size: | Chevy Big Block (396-502) |
| Exhaust Port Location: | +0.500 |
| Exhaust Runner Volume: | 129 |
| Exhaust Valve Diameter: | 1.90 |
| Family: | Victor Jr. |
| Finish: | Cast Aluminum |
| Flange Type: | Rectangle Intake |
| Grade Type: | Performance |
| Guide Material: | Manganese Bronze |
| Guide Plate Material: | Hardened Steel |
| Guide Plates Included: | Yes |
| Horsepower: | 600-800 |
| Intake Runner Volume: | 300 |
| Intake Valve Diameter: | 2.25 |
| Material: | Aluminum |
| Part Number: | ede77485 |
| Push Rod Diameter: | (Suggested) 0.375 |
| Quantity: | Sold Individually |
| Retainer Included: | Yes |
| Rocker Arm Stud Diameter: | 0.4375 |
| Seat Angle: | Exhaust 45 deg/Intake 45 |
| Seat Material: | Ductile Iron |
| Series: | Victor Jr. |
| Type: | Complete |
| Usage: | Racing |
| Valve Angle: | 24 |
| Valve Included: | Yes |
| Valve Spring Diameter: | 1.55 |
| Valve Spring Maximum Lift: | 0.700 |
| Valve Springs Included: | Yes |
| Valve Stem Diameter: | 0.3438 |
Product Downloads
Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Edelbrock |
| StreetFX SKU | ede77485 |
| SFX Item ID | 4237315 |
| Accounting SKU | ede-77485 |
| Manufacturer SKU | 77485 |
| Manufacturer UPC | 85347774852 |
| Alternative References | 77485, EDB77485, EDL-77485 |
Cylinder Head, Victor Jr. 24 degree Rectangular Port, Aluminum, Assembled, Chevy, Big Block, Each
These Edelbrock Victor Jr. 24 degree rectangular port cylinder heads for Big Block Chevy feature smaller 300cc intake ports designed for competition engines up to 510 cu. in. with 4.250 in. bores or larger. They are ideal for throttle control devices common in Super class racing today. The cylinder heads include 2.250 in. intake and 1.900 in. exhaust valves with 11/32 in. stems.
| Product Attributes | |
|---|---|
| Brand | Edelbrock |
| Manufacturer's Part Number | 77485 |
| Part Type | Cylinder Heads |
| Product Line | Edelbrock Victor Jr. 24 Degree Rectangular Port Cylinder Heads for Big Block Chevy |
| UPC | 085347774852 |
| Combustion Chamber Volume (cc) | 106 |
| Intake Runner Volume (cc) | 300cc |
| Exhaust Runner Volume (cc) | 128cc |
| Cylinder Head Style | Assembled |
| Cylinder Head Material | Cast aluminum |
| Camshaft Style | Hydraulic roller |
| Intake Port Shape | Rectangular |
| Intake Valve Diameter (in.) | 2.250 in. |
| CNC-Machined Combustion Chamber | No |
| CNC-Machined Intake Runner | No |
| CNC-Machined Exhaust Runner | No |
| Combustion Chamber Style | Semi-open |
| Intake Port Location | Standard |
| Exhaust Port Shape | Square |
| Exhaust Port Location | Raised |
| Intake Valves Included | Yes |
| Exhaust Valves Included | Yes |
| Exhaust Valve Diameter (in.) | 1.900 in. |
| Valve Springs Included | Yes |
| Maximum Valve Lift (in.) | 0.775 in. |
| Outside Diameter of Outer Spring (in.) | 1.540 in. |
| Damper Spring Included | No |
| Number of Springs Per Valve | Dual |
| Retainers Included | Yes |
| Retainer Material | Steel |
| Locks Included | Yes |
| Lock Style | 7 degree |
| Valve Stem Seals Included | Yes |
| Valve Stem Seal Style | Positive stop |
| Rocker Arm Studs Included | Yes |
| Rocker Arm Nut Thread Size | 7/16 in.-20 |
| Rocker Arms Included | No |
| Rocker Arm Nuts Included | No |
| Guideplates Included | Yes |
| Guideplate Pushrod Size | 3/8 in. |
| Valve Cover Mounting Style | Perimeter bolt |
| Accessory Bolt Holes Drilled | Yes |
| Intake Valve Angle | 24 |
| Valve Guides Included | Yes |
| Valve Guide Material | Manganese bronze |
| Valve Seats Machined | Yes |
| Valve Seat Machine Style | 3-angle |
| Valve Seat Material | Ductile iron |
| Cylinder Head Color | Natural |
| Steam Holes Drilled | No |
| Machined for O-Ring | No |
| Heat Crossover | No |
| Remanufactured | No |
| Quantity | Sold individually. |
| Manufacturer Attributes | |
|---|---|
| Quantity | Sold Individually |
| Seat Material | Ductile Iron |
| Retainer Included | Yes |
| Valve Included | Yes |
| Guide Plate Material | Hardened Steel |
| Seat Angle | Exhaust 45 deg/Intake 45 |
| Valve Spring Diameter | 1.55 |
| Flange Type | Rectangle Intake |
| Exhaust Port Location | +0.500 |
| Exhaust Runner Volume | 129 |
| EGR Port | No |
| Horsepower | 600-800 |
| Construction Type | Complete |
| Intake Valve Diameter | 2.25 |
| Camshaft Type | Hydraulic Roller |
| Deck Thickness | 0.5625 |
| Valve Angle | 24 |
| Valve Springs Included | Yes |
| CNC Ported | No |
| Grade Type | Performance |
| Combustion Chamber Volume | 106 |
| Exhaust Valve Diameter | 1.90 |
| Valve Spring Maximum Lift | 0.700 |
| Guide Material | Manganese Bronze |
| Series | Victor Jr. |
| Material | Aluminum |
| Family | Victor Jr. |
| Push Rod Diameter | (Suggested) 0.375 |
| Intake Runner Volume | 300 |
| Rocker Arm Stud Diameter | 0.4375 |
| Guide Plates Included | Yes |
| Valve Stem Diameter | 0.3438 |
| Product Class | Engine Cylinder Head |
| Construction/Type | Edelbrock part #77485 Victor Jr. 24 Degree is a complete cylinder head designed for Big Block Chevy 396-502 V8 engines. The 300cc rectangle ports produce impressive flow on competition big-blocks up to 510 c.i.d. with 4.310" or larger bore. |
| Vehicle Designations | Chevrolet:Big-Block Mark IV:396 (6.5L)-502 (8.2L) |
| Vehicle Brief | Edelbrock BBC Cylinder Head |
| Market Description | The Edelbrock part #77485 Big-Block Chevy Victor Jr. 24deg cylinder head features an extra thick deck and extra material in the spring pockets for a heavy-duty casting that can be used with high-lift cam and heavy spring combinations. Edelbrock equips the complete 774815 cylinder head with a spring packages to suit hydraulic roller cams. The 300cc rectangle ports produce impressive flow and great power on competition big-blocks up to 510 c.i.d. with 4.310" or larger bore. Exhaust port exits are raised .534" to greatly improve exhaust flow and power. |
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