Race-Rite RR BB-O Series Cylinder Heads
Big Block Chevy Top End Kits Include:
- Complete Cylinder Heads
- HV 2017 Dual Plane Intake Manifold (4150 Series)
- Tall Cast Aluminum Valve Covers with Studs and Nuts
- Valve Cover, Intake, Exhaust, Carburetor and Head Gaskets
- Head Bolts with Washers
- Intake Bolts with Washers
- Spark Plugs
- Brodix Hat
Cylinder Head Specifications
- Intake Port Volume: 270cc - Oval Port
- Combustion Chamber Volume: 119cc
- Valves: 2.250 in. dia. x 5.218 in. o.a.l. Intake / 1.880 in. dia. x 5.394 in. o.a.l. Exhaust ( 11/32 in. Stem Diameter )
- Valve Springs: 1.550 in. Diameter - Open Pressure: 365 lbs.; Closed Pressure: 150 lbs.; Installed Height: 1.950 in.; Max Lift: .650 in.
- Spring Retainers: 1.550 in. 10° Steel
- Rocker Studs: 7/16 in.
- Guide Plates: 3/8 in.
- Valve Seals: 11/32 in.
- Spark Plug Configuration: Angled
Facts and Related Components
- Torque Heads: 70 ft-lb.
- Torque Rocker Studs: 40-45 ft-lb.
- Intake Gasket: Fel-Pro p/n 375-1210, Cometic p/n 245-C5430
- Head Gasket: 4.310 in. Bore - Fel-Pro p/n 375-1027, Cometic p/n 245-C5432; 4.540 in. Bore - Fel-Pro p/n 375-1017, Cometic p/n 245-C5433
- Exhaust Gasket: Fel-Pro p/n 375-1411 or Cometic p/n 245-C5429
- Head Bolts: ARP p/n 070-135-3601
- Head Studs: ARP p/n 070-135-4001 (6-point)
- Spark Plug Specs: 14mm Thread, .750 in. (3/4 in.) Reach, Gasket Seat
- Valve Angle: 26° and 4° Intake, 17° and 4° Exhaust
- Angle Milling: .0066 in. per cc
- Flat Milling: .0050 in. per cc
- Pushrod Slots: Standard
- Pushrods: Check pushrod clearance with head installed on the engine block before final assembly
- Stud Girdle: Standard
- Rocker Arms: Standard
- Lifters: Standard
- Pistons: Standard
- Exhaust Pattern: Standard
- Valve Centerline: Standard
- Spring Pockets: Maybe step cut to 1.625 in.
- Accessory Bolt Holes are Drilled
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.