Air Flow Research Bbc Magnum 345Cc Cnc Bowl Comp Rect 117Cc Chamber 2110
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If "Dirty Harry"drove a racecar, it wouldcertainly be fitted with apair of AFR BBC 345"Magnum" cylinderheads. If huge horsepower iswhat you are searching for,either of these castings willcertainly deliver. With RaceReady "As Cast"345cc flirting with 400 CFM,these cyilnder headsrepresent the ultimate inairflow for your BBChevrolet. These cyilnderheads are targeted at largercubic inch engines (509-632CID) looking for maximumhorsepower and rpm capabilitywith a primary operatingrange of 3500-8000 rpm's(This range is an average andwill vary with enginedisplacement and componentselection). As well, thesealuminum heads provideimpressive torque figures athigher rpm levels. Blown,turbo, and nitrous engineswill especially like thelarger, higher flowing intakeports. Our 345cc cylinderheads will work best withcamshafts exceeding .750gross valve lift to makebetter use of the substantialairflow found in the higherlift range. They comestandard with AFR's trademark.750" thick cylinderhead deck, reinforced rockerstud bosses, and are equippedwith premium one piecestainless steel 2.300"intake valves and 1.880"exhaust valves. Standardcombustion chamber volume is115cc's on the "AsCast" pieces and 121ccfor our 345cc CNC Chamber.Properly selecting thecorrect cylinder head dependson a large number ofvariables.
BasicPackage Components:- 5-angle valve job
- Intake Valve, 2.300"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 SpringCup
- Intake ValveSeats
- Exhaust ValveSeats
- Bronze ValveGuides Intake
- BronzeValve Guides Exhaust
- AFR BB Chevy 7/16 ExhaustStuds
- AFR BB Chevy7/16 Intake Studs