Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Big Victor Spread-Port CNC Aluminum Cylinder Head for Big Block Chevy
This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
- Big Block Chevy
- Intake Volume: (LH) 442cc (RH) 451cc
- Exhaust Volume: 189cc
- 92cc Combustion Chamber
- 18° Valve Angle
- Bare Head, Sold Individually
- Intended for high-output, large cubic inch big block Chevy race engines with 4.840" bore spacing
- A356 aluminum casting is HIP processed (Hot Isostatic Pressing) for superior strength, durability, and dimensional stability
- CNC-machined intake ports and raised exhaust runners provide better flow efficiency
- Extra deck material allows fine-tuning of the combustion chamber design as desired
- Recommended Intake Manifold: Edelbrock #28003 or #28005
- Required Valve Covers: #350-4259
Edelbrock and Pat Musi worked with Jesel to improve valvetrain geometry, delivering Pro Stock level technology on engines up to 10,000 RPM. Jesel's aluminum shaft-mounted system (KPS-387154) has a 1-pc stand that pairs the intake & exhaust stands for exceptional stability. The intake fulcrum is 1.82" long; available rocker ratios are 1.6:1 through 1.95:1. The exhaust fulcrum is 2" long; available rocker ratios are 1.6:1 through 2:1.
Combustion Chamber Volume: 92cc Intake Runner Volume: 442cc (L), 451cc (R) Exhaust Runner Volume: 189cc Intake Valve Diameter: 2.45" (Valves not included) Exhaust Valve Diameter: 1.85" (Valves not included) Valve Stem Diameter: n/a Valve Guides: Manganese Bronze Deck Thickness: --- Valve Pocket Diameter: 1.76" Valve Spring Maximum Lift: Springs not included Rockers: Use Jesel Shaft-Mount KPS-381754 Guideplate: n/a Pushrod Diameter: --- Valve Angle: 18° x 4° Intake, 9° x 3.9° Exhaust Exhaust Port Location: n/a Spark Plug Fitment: 14mm x 3/4' Reach,
Gasket SeatValve Lift Intake Exhaust .400' 288 226 .500' 353 254 .600' 415 277 .700' 468 302 .800' 496 324 .900' 491 328 18° (350-617569) 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
Items You Need
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
