Air Flow Research Bbc Magnum 290Cc Cnc Port Comp Oval 112Cc Chamber 3640
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For the ultimate in"Oval Port"performance, the fully CNCported AFR 290 has nocompetition. With flowfigures most small to mediumsized rectangular portcastings would be envious of,these high flowing"Ovals" producetremendous airspeed andreally pack a punch. Ideallysuited for 296-509 CID streetand strip performance, aswell as circle trackapplications which requirestrong low and mid-rangetorque to help accelerate acar coming off a corner. Onceagain, AFR has included it'strademark 3/4" deck,reinforced rocker studbosses, and thick ruggedcastings, so you can own thestrongest and most efficientheads on the market today.Premium hardware such as2.250/1.880 one piecestainless valves, 1.625double springs, 10 degreelocks and retainers, and highquality studs and guideplatesall come as standardequipment. Take note thehigher flowing exhaust portsare raised .375 over stocklocation, and therefore theseheads might not be a directbolt-on in every application.These heads have no EGR.
Basic Package Components:- 100% CNCPorted Exhaust Ports
- 100% CNC Ported Intake Ports
- 100% CNC PortedCombustion Chambers
- 3-angle Valve Job/RadiusedExhaust
- Intake Valve,2.250" stainless steel
- Exhaust Valve,1.880" stainless steel
- 1.550 O.D. HydraulicDual Valve Spring withdampener 170 lbs. on seat,430 lb open
- 10Chrome Moly Retainer
- 10 Valve Locks
- Guide Plates
- VitonValve Seals
- HardenedSpring Cup
- IntakeValve Seats
- ExhaustValve Seats
- BronzeValve Guides Intake
- Bronze Valve Guides Exhaust
- AFR BB Chevy 7/16Exhaust Studs
- AFR BBChevy 7/16 Intake Studs