AFR 2110 345cc Magnum Big Block Chevy Aluminum Cylinder Heads

Established in 1970 in Valencia, CA, Air Flow Research is a family-owned and operated company building products for the Professional Racing and Street markets, including racers, street performance fans, and everyone in-between. The Air Flow Research product lineup contains cylinder heads, intake manifolds, valves, gaskets, carburetor adapters and spacers, lifters, fasteners, and more.

If huge horsepower is what you're searching for, then AFR 345cc Magnum BBC cylinder heads will certainly deliver. They're recommended for radical street/strip, Pro Street, or racing applications on engines up to 572 cu. in. operating below 7,000 rpm—and are capable of flowing 400 cfm at 0.700 in. of lift. These A356 aluminum heads are designed for maximum horsepower and rpm capability, with an average primary operating range of 3,500-8,000 rpm; they also provide impressive torque figures. AFR recommends the use of .120 in. wall pushrods and full-roller rocker arms for strength.

It's vital that you check clearance of all moving parts due to the vast array of rocker arms, lifters, cams, springs, etc. Don't forget to check pushrod-to-head clearance, as well as any potential interference from your rocker arms and spring assemblies prior to final engine assembly. AFR 345cc Magnum BBC cylinder heads come standard with AFR's trademark 3/4 in. thick cylinder head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2.300 in. intake and 1.880 in. exhaust valves.

Combustion Chamber Volume (cc):117
Intake Runner Volume (cc):345cc
Exhaust Runner Volume (cc):124cc
Cylinder Head Style:Assembled
Cylinder Head Material:Aluminum
Intake Port Shape:Rectangular
Intake Valve Diameter (in):2.300 in.
Cylinder Head Finish:Natural
CNC-Machined Combustion Chamber:Yes
CNC-Machined Intake Runner:No
CNC-Machined Exhaust Runner:No
Combustion Chamber Style:Heart
Intake Port Location:Standard
Exhaust Port Shape:Square
Exhaust Port Location:Standard
Intake Valves Included:Yes
Exhaust Valves Included:Yes
Exhaust Valve Diameter (in):1.880 in.
Valve Springs Included:Yes
Maximum Valve Lift (in):0.750 in.
Outside Diameter of Outer Spring (in):1.625 in.
Damper Spring Included:Yes
Number of Springs Per Valve:Dual
Retainers Included:Yes
Retainer Material:Chromoly steel
Locks Included:Yes
Lock Style:10 degree
Valve Stem Seals Included:Yes
Rocker Arm Studs Included:Yes
Rocker Arm Nut Thread Size:7/16-20 in.
Rocker Arms Included:No
Rocker Arm Nuts Included:No
Guideplates Included:Yes
Guideplate Pushrod Size:3/8 in.
Valve Cover Mounting Style:Perimeter bolt
Accessory Bolt Holes Drilled:Yes
Intake Valve Angle:24/4
Exhaust Valve Angle:15/4
Valve Guides Included:Yes
Valve Guide Material:Bronze
Valve Seats Machined:Yes
Valve Seat Machine Style:5-angle
Valve Seat Material:Ductile iron
Steam Holes Drilled:No
Oiling Style:Through pushrod
Machined for O-Ring:No
Heat Crossover:No
Quantity:Sold as a pair.