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.

More From This Category

AFR Cylinder Head, 185cc Gen 3 Hemi - As Cast - 69cc Chamber Driver Side, NO PARTS (5.7 -

AFR Cylinder Head, 185cc Gen 3 Hemi - As Cast - 69cc Chamber Driver Side, NO PARTS (5.7 -

$2,313.45

Trick Flow Cylinder Head, GenX 220, Fast As Cast , Assembled, 65cc CNC Chambers, GM LS2, Each

Trick Flow Cylinder Head, GenX 220, Fast As Cast , Assembled, 65cc CNC Chambers, GM LS2, Each

$2,421.50

AFR Spring Cup, O.D. 1.655 OD x 1.565 ID x .570 ID (Fits 8000, 8001, 8002, 8016 for BBC/BBF), Ea.

AFR Spring Cup, O.D. 1.655 OD x 1.565 ID x .570 ID (Fits 8000, 8001, 8002, 8016 for BBC/BBF), Ea.

$11.13

Trick Flow Cylinder Head, GenX 255, CNC Comp Port, Assy, 69cc CNC Chamber, 370 Springs, Ti Retain, 6-Bolt, GM LSX, Each

Trick Flow Cylinder Head, GenX 255, CNC Comp Port, Assy, 69cc CNC Chamber, 370 Springs, Ti Retain, 6-Bolt, GM LSX, Each

$3,627.90