Air Flow Research 2101-1 325cc Rectangle Port 24 deg Magnum Aluminum Cylinder Heads for Big Block Chevrolet

Installation Notes: Optional stud girdle required for 2° rolled valve angles and 1'' longer head bolt needed on four bottom exhaust bolt holes. Longer pushrods may also be required.AFR 325cc Rectangle Port 24° Magnum Aluminum Cylinder Heads - Big Block Chevrolet 2101-1 at low everyday prices.Our products are assured for high quality and standard. Our products are designed with the up to date designs and creativity. We always work towards to fulfill the requirements from Air Flow Research including AFR Big Block Chevrolet Aluminum Cylinder Heads.AFR 325cc Rectangle Port 24° Magnum Aluminum Cylinder Heads - Big Block Chevrolet 2101-1 at low everyday prices.Our products are assured for high quality and standard. Our products are designed with the up to date designs and creativity. We always work towards to fulfill the requirements from Air Flow Research including AFR Big Block Chevrolet Aluminum Cylinder Heads.

AFR BB-Chevy line of medium volume intake runners will provide you with exactly that. The phrase ''having your cake and eating it to'' would certainly be appropriate with their moderately sized intake runners producing tremendous flow figures across the entire lift range. These high flowithhigh velocity ports provide extreme versatility and fill the needs of many applications. From a max-effort high compression 454-605ci low rpm marine application, either one of these cylinder heads would be a great choice. These heads would also be ideal in a larger cubic inch ''Pro-Street'' application with their broad torque range, as well as significant rpm and horsepower capability. These heads will work best with a primary operating range of 3000-7000 rpm's (This range is an average and will vary with engine displacement as well as component selection). The 325cc comes standard with AFR's trademark .750'' (3/4'') thick head deck, reinforced rocker stud bosses, and are equipped with premium one-piece stainless steel 2.300'' intake valves and 1.880'' exhaust valves. Properly selecting the correct cylinder head for an application depends on a large number of variables. Take note the higher flowing exhaust ports and bolt pattern are raised .375'' (3/8'') over stock location, this rarely affects header or chassis fitment.

• Bronze Valve Guides
• Exhaust Valve Seats
• Intake Valve Seats
• Hardened Spring Seats
• Viton Valve Seals
• Adjustable 3/8'' Guide Plates
• 10° Valve Locks 7/16'' Rocker Studs
• 10° Manley 4140 Chrome Moly Retainers
• 1.625'' OD PAC Racing Solid Roller Valve Spring, 275 lbs on seat, .850'' maximum lift
• Exhaust Valve, 1.880'' x 5.442'' Overall Valve Length
• Intake Valve, 2.300'' x 5.500'' Overall Valve Length
• 325cc Intake Ports
• Competition 5-angle Valve Job
• Bowl Blended Intake Ports
• Bowl Blended Exhaust Ports

• Big Block Chevrolet

• Cubic Capacity: 345cc
• Shape: Rectangle
• Material: Aluminum