Items You Need
Assembled Cylinder Heads
Features:
- Assembled cylinder head
- For Big Block Chevy applications
- 444 cc (cubic centimeter) intake ports
- The intake port is raised .300 in.
- 97 cc (cubic centimeter) combustion chamber
- Intake port flows 495 cfm (cubic feet per minute)
- Exhaust port flows 305 cfm (cubic feet per minute)
- 2.400 x 6.030 intake valve size
- 1.800 x 5.93 exhaust valve size
- Titanium valve springs:
- 315 lb. spring seat pressure, 875 lb. opened
- 1.645 in. spring diameter, 2.100 in. installed height
- 10-degree titanium retainers
- 10-degree jumbo valve locks
- 11/32 valve seals
- 20-degree valve angle
- As-cast finish
- Completely compatible with all existing 20-degree Brodix components
- Blended valve bowls
- Drilled accessory bolt holes
- Note:
- Torque heads to 70 ft-lbs.
- Torque rocker stands to 40-45 ft-lbs.
- Spring pockets may Not be cut any larger or deeper than 1.750 in.
- 4.600 in. minimum bore on the intake manifold
Recommended Related Components:
- Intake Gaskets: BRODIX MG 2021, FLATOUT FG 8275
- Head Gaskets: 4.600 – FEL-PRO 1057, COMETIC C5434
- Exhaust Gaskets: FEL-PRO 1412
- Valve Cover Gaskets: BRODIX MG 2020, FLATOUT FG 6108.3
- Head Studs: BRODIX SK HS SR 20 for BRODIX Aluminum Block, AR 235-4323 for Cast Iron Block
- Spark Plug Starting Points: NGK R5671A-10 for Alcohol, NGK R5671A-9 for Racing Gas
- Rocker Arms: JESEL or T&D Shaft System - JESEL KPS 441184, T&D 3142
- Valve Covers: MOROSO 68483
- Intake Manifolds: BM 2020 (Standard), BM 2021 (Tall Deck)
- Angle Milling: .0066 in. per cc
- Flat Milling: .0050 in. per cc
- Intake Valve Seats: 2.460 in. x .450 in.
- Exhaust Valve Seats: 1.900 in. x .450 in.
- Intake and Exhaust Valve Guides: BH 545 11/32 PL
- Standard lifters
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.