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AFR 357cc BBC Magnum Rectangle Port Cylinder Heads, Titanium Retainers, 100% CNC Ported

AFR 2010-TI
AFR's 357cc heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications or radical "Pro Street" builds with displacements up to 605 cubic inches. Component upgrades and machining options are available to customize AFR Heads to your specific build.
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Description

AFR's "As Cast" Magnum Series The Original "357" Magnum BBC Cylinder Heads! If "Dirty Harry" drove a racecar, it would certainly be fitted with a pair of AFR 357cc "Magnum" cylinder heads. If huge horsepower is what you are searching for, either of these castings will certainly deliver. With our fully CNC ported 357cc flowing 425 CFM it can produce upwards of 900 HP. These cyilnder heads were targeted at larger cubic inch engines (509-632 CID) looking for maximum horsepower and rpm capability with a primary operating range of 3500-8000 rpm’s (This range is an average and will vary with engine displacement and component selection). Also, these aluminum heads provide impressive torque figures at higher rpm levels, so higher reving 450+ CIDs can benefit from the efficient runner. Blown, turbo, and nitrous engines will especially like the larger, higher flowing intake ports. AFR BBC 357cc cylinder heads will work best with camshafts exceeding .750 gross valve lift to make better use of the substantial airflow found in the higher lift range. The 357cc come standard with AFR’s trademark .750" thick cylinder head deck, reinforced rocker stud bosses, PAC 1.625 racing springs rated to .850 lift, and are equipped with premium one piece stainless steel 2.300" intake valves and 1.880" exhaust valves. Standard combustion chamber volume is 121cc for our 357cc BBC and can be milled as low as 102 cc's if necessary. Properly selecting the correct cylinder head depends on a large number of variables. Please consult with one of our sales technicians to assist you in making the best decision for your particular application.

Basic Package Components Part #
100% CNC Ported Chambers, Exhaust, and Intake
Competition 5-angle Valve Job
11/32" Intake Valve, 2.300" x5.500" O.A.L AFR #7626
11/32" Nail Head Exhaust Valve, 1.880" x 5.450" Overall Valve Length AFR #7631
PAC Racing Spring #1224 1.625 O.D. Solid Roller, 275lbs on seat, .850 Maximum Lift, Max RPM 7400-7600 AFR #8031
Titanium 10 degree Retainer 1.490 OD x 1.115 ID x .745 ID for SBC/BBC AFR #8505
10° 11/32" Valve Locks with lashcap recess AFR #9005
ARP 7/16" Rocker Exhaust Studs AFR #6406
ARP 7/16" Rocker Intake Studs AFR #6407
Adjustable 3/8" Guide Plates AFR #6109
11/32" Viton Valve Seals AFR #6611
Hardened Spring Cup 1.740" O.D / 1.650" I.D AFR #8046
Intake Valve Seats 2.450" O.D x 2.000" I.D x .375" Deep AFR #9062
Exhaust Valve Seats 2.000" O.D x 1.580" I.D x .375" Deep AFR #9064
11/32" Intake Bronze Valve Guides .531" O.D x 2.10" O.A.L AFR #9045
11/32" Exhaust Bronze Valve Guides .531" O.D x 2.25" O.A.L AFR #9046

Specifications, Features, and Optional Supporting Components
Head Torque 75 ft. lbs
Intake Port Gasket AFR #6854 (.120" Thick) or AFR #6856 (.060" Thick)
Exhaust Port Gasket AFR #6858
Head Gasket, Fel-Pro #1047 (Mark V and VI) AFR #6849
Head Gasket, Fel-Pro #1017-1 (Mark IV) AFR #6350
Head Bolts, ARP 135-3703 (Mark IV) AFR #6306
Head Bolts, ARP 135-3707 (Mark V) AFR #6308
Head Studs, ARP 235-4713 AFR #6307
Head Bolt Washers, Manley AFR #6320
Suggested Manifold
Super Victor Victor Jr., 
Spark Plug Starting Range Autolite 3932
Combustion Chambers 121cc Full CNC
Valve Spring Pocket Diameter 1.725 O.D
Intake Port Dimension 2.520"H x 1.815"W x 11/32 Radius
Exhaust Port Dimension 1.780"H x 2.025" W
Valve Angle 24°/4° Intake, 15°/4° Exhaust
Angle Mill
.009" per cc/Maximum 104cc
Flat Mill
.006" per cc/ Maximum 114cc
Stud Girdle, (AFR Specific) AFR #6202
Important: Optional stud girdle required for 2° rolled valve angles and 1" longer head bolts needed on four bottom exhaust bolt holes. Longer pushrods might also be required.
Note: Angle mills might require a .120" thick intake gasket.

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Shipping Information

  • Item Requires Shipping
  • 80.0 lbs.
  • W24.0000” x H12.0000” x L24.0000”
  • Free Basic Shipping
  • This item ships in its own box.
  • FREE continental USA ground shipping on ALL AFR Cylinder Heads
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