BBC MAGNUM 385CC FULL CNC COMPRECT.121CC CHAMBER

Description

As the aftermarket
continues to push larger
displacement combinations,
even 555 CID BBC’s are
becoming commonplace with
600+ CID engines more
plentiful than ever before.
AFR is proud to announce our
answer to that with our all
new 385 cc Magnum, the
largest and highest flowing
BBC product in our line-up
with flow numbers that are
creeping up on many of our
competitor’s 18 degree
Pro-stock style heads. If
you’ve got the displacement
we have the head to feed it
with an intake port that
flirts with 440 CFM at a
usable lift-point, and enough
complimenting exhaust flow to
still maintain over 75% of
that number @ .800 lift (335
CFM’s at .800 lift!). While
this huge a runner is more
clearly aimed at 572 – 632
CID applications, in a light
car it could still be
considered in 555-565 CID
aggressive builds that are
built to reliably turn 7800 –
8500 RPM’s (Ti valves
recommended over 8000 RPM’s).
This head will be best
utilized with camshafts in
the .780 – .850 range to take
full advantage of its
impressive higher lift
airflow, but the best thing
about this head is its
ability to also provide the
end user with industry
leading low and mid-lift flow
as well (400+ CFM at .600
lift!). This head of course
comes with AFR’s trademark
.750 thick head deck,
reinforced rocker stud
bosses, and is equipped with
2.350 intake / 1.880 tulip
exhaust valves. Properly
selecting the right cylinder
head depends on a large
number 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. 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
  GuidesIntake
• Bronze
  Valve Guides Exhaust
• AFR BB Chevy 7/16 Exhaust
  Studs
• AFR BB Chevy
  7/16 Intake Studs