50% CNC Combustion Chamber (Bowl Blend) Package
|Big Block Chevy 325cc Rectangle Port 24° Magnum Basic Package Components|
|50% CNC Ported Combustion Chambers|
|Bowl Blended Exhaust Ports|
|Bowl Blended Intake Ports|
|Competition 5-Angle Valve Job|
|Intake Valve, 2.300'' x 5.500'' Overall Length|
|Exhaust Valve, 1.880'' x 5.442'' Overall Length|
|1.625'' OD PAC Racing Solid Roller Valve Spring, 275 lbs. on seat, .850'' maximum lift, max RPM 7400-7600|
|10º Manley 4140 Chrome Moly Retainers|
|10º Valve Locks|
|7/16'' Rocker Studs|
|Adjustable 3/8'' Guide Plates|
|Viton Valve Seals|
|Hardened Spring Seat|
|Intake Valve Seats|
|Exhaust Valve Seats|
|Bronze Valve Guides|
|Big Block Chevy 325cc Rectangle Port 24° Magnum Head Specifications||Head Torque w/Moly Lube||75 Ft. Lbs.||Rocker Stud Torque||55 Ft. Lbs.||Intake Port Gasket, 1.720'' x 2.450'' with 1/2'' radius||Fel-Pro 375-1275 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket.||Exhaust Port Gasket||AFR 033-6858||Head Gasket Mark IV||4.540'' Bore, Fel Pro 375-1017 |
|Head Gasket Mark V - VI||Up to 4.500'' Bore, Fel Pro 375-1047||Head Gasket Mark V - VI||4.500'' to 4.600'' Bore, Fel Pro 375-17049||Head Bolts & Studs||Standard ARP||Head Bolt Washers||Manley Standard||Stud Girdle||AFR 033-6202||Suggested Manifold||Edelbrock 350-2907 & 350-2927 or Brodix 158-HV2000 & 158-HV2001||Spark Plug Starting Range||Champion C59C, Autolite 3932||Combustion Chambers||117cc Partially CNC Bowl Blend||Intake Port Volume||325cc Partially Ported||Exhaust Port Volume||N/A||Spring Pocket can be cut to 1.750, no deeper.||Valve Spacing||Standard||Rocker Arms||Standard||Valve Angle||24° / 4° Intake ; 15° / 4° Exhaust||Angle Mill, 104cc Maximum||.009'' per cc||Flat Mill, As Cast 108cc, CNC 114cc Maximum||.006'' per cc||NOTE:||Flat and Angle mills might require a .120'' thick head gasket.|
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.
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.
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.