Air Flow Research Bbc Magnum 385Cc Full Cnc Comp Rect.121Cc Chamber 2020
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As the aftermarketcontinues to push largerdisplacement combinations,even 555 CID BBC's arebecoming commonplace with600+ CID engines moreplentiful than ever before.AFR is proud to announce ouranswer to that with our allnew 385 cc Magnum, thelargest and highest flowingBBC product in our line-upwith flow numbers that arecreeping up on many of ourcompetitor's 18 degreePro-stock style heads. Ifyou've got the displacementwe have the head to feed itwith an intake port thatflirts with 440 CFM at ausable lift-point, and enoughcomplimenting exhaust flow tostill maintain over 75% ofthat number @ .800 lift (335CFM's at .800 lift!). Whilethis huge a runner is moreclearly aimed at 572 - 632CID applications, in a lightcar it could still beconsidered in 555-565 CIDaggressive builds that arebuilt to reliably turn 7800 -8500 RPM's (Ti valvesrecommended over 8000 RPM's).This head will be bestutilized with camshafts inthe .780 - .850 range to takefull advantage of itsimpressive higher liftairflow, but the best thingabout this head is itsability to also provide theend user with industryleading low and mid-lift flowas well (400+ CFM at .600lift!). This head of coursecomes with AFR's trademark.750 thick head deck,reinforced rocker studbosses, and is equipped with2.350 intake / 1.880 tulipexhaust valves. Properlyselecting the right cylinderhead depends on a largenumber of variables.
Basic Package Components:- 5-angle valve job
- Intake Valve,2.350" stainless steel
- Exhaust Valve,1.880" stainless steel
- 1.625 O.D. RollerDual Valve Spring withdampener 255 lbs. on seat,.750" maximum lift
- 10 Chrome MolyRetainer
- 10Valve Locks
- GuidePlates
- Viton ValveSeals
- Hardened SpringCup
- Intake ValveSeats
- Exhaust ValveSeats
- Bronze ValveGuidesIntake
- BronzeValve Guides Exhaust
- AFR BB Chevy 7/16 ExhaustStuds
- AFR BB Chevy7/16 Intake Studs