AFR - Airflow Research 201080368508 - AFR BB-Chevy Magnum Aluminum Cylinder Head
AFR - Airflow Research#033-201080368508357cc Rectangle Port 24° Magnum Aluminum Cylinder Heads |
||||
|
|
||||
AFR - Airflow Research 201080368508 - AFR BB-Chevy Magnum Aluminum Cylinder Head Details
BB Chevy Basic Package Components Competition 5-angle Valve Job Intake Valve, 2.250'' stainless steel Exhaust Valve, 1.880'' stainless steel 1.625'' OD Roller Dual Valve Spring with dampner, 240 lbs. on seat, .750'' maximum lift 10º Titanium Retainers 10º Chrome Moly Valve Locks Valve Seals Hardened Shims Intake Valve Seats Exhaust Valve Seats Bronze Valve Guides Intake Bronze Valve Guides Exhaust Guide Plates 7/16'' Exhaust Rocker Stud 7/16'' Intake Rocker Stud BB Chevy Magnum Head Specifications Head Torque 75 Ft. Lbs. Intake Port Gasket 1.700'' x 2.430'' with 1/2'' radius Exhaust Port Gasket Standard Head Gasket 4.370 bore Fel Pro 375-1027 Head Gasket 4.540 bore Fel Pro375-1017-1 Head Gasket
Mark V-VI-up to 4.500 BoreFel Pro375-1017-1 or Fel Pro375-1047 Head Gasket
Mark V-VI-up to 4.500 Bore Fel Pro 375-17049 Head Bolts & Studs Standard Head Bolt Washers Manley Standard Stud Girdle Standard Suggested Manifold Edelbrock 350-2907 or 350-2927 Spark Plug Starting Range Champion C59C or Autolite 3932 Combustion Chambers 121cc Spring Pocket can be cut to 1.750, no deeper. Valve Spacing Standard Rocker Arms Standard Valve Angle 24º/4º Intake, 15º/4º Exhaust Angle Mill .009'' per cc Flat Mill .006'' per cc 
Years of research and development have been invested to bring you the ultimate in bolt on performance for your Big Block Chevrolet. Airflow Research is proud to introduce our BB Chevy Aluminum cylinder heads. AFR's highly efficient port designs outflow the competition at every lift-point, even those with considerably larger runner volumes. An exclusive new combustion chamber design provides impressive swirl figures and help these heads generate big low and mid-lift airflow numbers. Considerable time has been spent to bring you a cylinder head which maximizes the entire flow curve, not just the big peak numbers. This aids in a much better ''cylinder fill'' and dramatically increases engine ''average'' airflow consumption (also spelled Horsepower!) The high velocity port designs help enhance engine acceleration as well as torque output. Structural features like our trademark 3/4'' head deck (a must for blown or nitrous engines), reinforced rocker stud bosses, and thick wall runners provide unparalleled durability, helping to create the strongest Big Block Chevy castings available today. Both intake and exhaust valve angles have been rolled two degrees to improve flow characteristics and provide a more efficient burn in the combustion chamber. The Unmatched Magnum version features combustion chambers with intake ports available at 305, 315, 325, 335, 345 and 357cc's. ''As Cast'' leaves the ports untouched or non-machined, so you can machine/tune your head the way that best fits your set up.
