The smallest intake volume runners in AFR's line-up, but don't let size fool you. Fully CNC ported 315cc aluminum cylinder heads will provide you with flow numbers most medium sized heads, and some larger, can only dream about. This line was designed to optimize low and mid-lift airflow, while still generating impressive peak figures. Their application should be focused on smaller cubic inch Big Blocks (396-502), with a primary operating range of 2500-6800 rpm's (this range is an average and will vary with engine displacement as well as component selection). These heads should also be given strong consideration in larger street driven or marine applications up to 555 CID, where low rpm power and drivability are a factor. The 315 version is extremely versatile with its incredibly strong low and midlift airflow figures as well as peak numbers approaching the 400 CFM mark. These heads would be a great choice if your looking for big torque, strong low rpm performance, and still have good rpm capabilities. The 315cc come standard with AFR's trademark .750" thick head deck, reinforced rocker stud bosses, and are equipped with premium one piece stainless steel 2.250" intake valves and 1.880" exhaust valves. Standard combustion chamber volume is 121cc for our BBC 315cc.

• Competition 5-angle valve job
• 100% CNC Ported Chambers, Exhaust, and Intake
• Intake Valve, 2.250" stainless steel
• Exhaust Valve, 1.880" stainless steel
• 1.625 O.D. Roller Dual Valve Spring with dampener 255 lbs. on seat, .750" maximum lift
• 10° Chrome Moly Retainer
• 10° Valve Locks
• Guide Plates
• Viton Valve Seals
• Hardened Spring Cup
• Intake Valve Seats
• Exhaust Valve Seats
• Bronze Valve Guides Intake
• Bronze Valve Guides Exhaust
• AFR BB Chevy 7/16 Exhaust Studs
• AFR BB Chevy 7/16 Intake Studs

Product Reviews for AFR2000 - AFR