Air Flow Research Bbc Magnum 305Cc Cnc Bowl Comp Rect 119Cc Chamber 2100
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The smallest intake volumerunners in our line-up, butdon't let size fool you.305cc "As Cast"with CNC bowl blend willprovide you with flow numbersmost medium sized cylinderheads, and some larger, canonly dream about. This linewas designed to optimize lowand mid-lift airflow, whilestill generating impressivepeak figures. The applicationshould be focused on smallercubic inch Big Blocks(396-502), with a primaryoperating range of 2500-6800rpm's (this range is anaverage and will vary withengine displacement as wellas component selection).These heads should also begiven strong consideration inlarger street driven ormarine applications up to 555CID, where low rpm power anddrivability are a factor. AFRBBC 305cc cylinder headswould be a great choice ifyour looking for big torque,strong low rpm performance,and still have good rpmcapabilities. The 305ccstandard with AFR's trademark.750" thick head deck,reinforced rocker studbosses, and are equipped withpremium one piece stainlesssteel 2.250" intakevalves and 1.880"exhaust valves. Standardcombustion chamber volume is115cc's on the 305 "AsCast" pieces.
Basic Package Components:- Competition5-angle valve job
- Intake Valve, 2.250"stainless steel
- Exhaust Valve, 1.880"stainless steel
- 1.625O.D. Roller Dual Valve Springwith dampener 255 lbs. onseat, .750" maximum lift
- 10 Chrome MolyRetainer
- 10Valve Locks
- GuidePlates
- Viton ValveSeals
- Hardened Shims
- Intake Valve Seats
- Exhaust Valve Seats
- Bronze Valve GuidesIntake
- Bronze ValveGuides Exhaust
- AFR BBChevy 7/16 Exhaust Studs
- AFR BB Chevy 7/16 IntakeStuds