JEGS
Big Block Chevy Aluminum Cylinder Head for use with Hydraulic Flat Tappet Cam [335 cc Intake Ports, Straight Angle Spark Plugs]
555-514072
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Items You Need
| Ratings |
|---|
| Price |
| Brand |
Big Block Chevy
335 cc Intake Runner
JEGS 555-514072 Big Block Chevy Aluminum Cylinder Head Features:
- 24-degree/4-degree intake valve angle
- 15-degree/4-degree exhaust valve angle
- Requires Guide plates, sold separately, we recommend Dart 27001230-4 or AFR 6110-1
- Requires 7/16 in. Rocker Arm Studs, sold separately
- Intake Port Location: Stock
- Intake Port Dimensions: 2.510 in. x 1.820 in. x 3/8 in. Radius
- Exhaust Port Location: 0.357 in. Raised
- Exhaust Port Dimensions: 1.690 in. x 1.900 in.
- Exhaust Port Volume: 140 cc
- Valve Seats Machined: Yes
- Valve Seat Machine Style: 3-Angle
- Valve Seat Material: Hardened Ductile Iron
- Valve Spring Pocket Diameter: 1.750 in. OD (Max Machining)
- Valve Spring Diameter: 1.460 in.
- Intake and Exhaust Valve Material: Stainless Steel
- Intake Valve Head Diameter: 2.250 in.
- Intake Valve Stem Diameter: .3415 in. - 11/32 in.
- Exhaust Valve Head Diameter: 1.880 in.
- Exhaust Valve Stem Diameter: .3415 in. - 11/32 in.
- Valve Length: Intake = +0.100 in. Longer than stock/ Exhaust = Stock Length
- Valve Locks: 7-degree
- Valve Retainers: Chromoly
- Intake Valve Guide Material: Manganese Bronze
- Exhaust Valve Guide Material: Phosphor Bronze
- Valve Guide Size: 1/2 in.
- Valve Guide clearance: .0014 in. - .002 in. (with 0.3415 in. Diameter valve stem)
- Spark Plug Dimensions: 14 mm x 0.750 in. with Gasket Seat
- Drilled for accessory hole
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
Specifications:
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.