BBC MAGNUM 315CC FULL CNC COMPREC PORT 121cc CHAMBER

Description

The smallest intake volume
runners in AFR’s line-up, but
don’t let size fool you.
Fully CNC ported 315cc
aluminum cylinder heads will
provide you with flow numbers
most medium sized heads, and
some larger, can only dream
about. This line was designed
to optimize low and mid-lift
airflow, while still
generating impressive peak
figures. Their application
should be focused on smaller
cubic inch Big Blocks
(396-502), with a primary
operating range of 2500-6800
rpm’s (this range is an
average and will vary with
engine displacement as well
as component selection).
These heads should also be
given strong consideration in
larger street driven or
marine applications up to 555
CID, where low rpm power and
drivability are a factor. The
315 version is extremely
versatile with its incredibly
strong low and midlift
airflow figures as well as
peak numbers approaching the
400 CFM mark. These heads
would be a great choice if
your looking for big torque,
strong low rpm performance,
and still have good rpm
capabilities. The 315cc come
standard with AFR’s trademark
.750″ thick head deck,
reinforced rocker stud
bosses, and are equipped with
premium one piece stainless
steel 2.250″ intake
valves and 1.880″
exhaust valves. Standard
combustion chamber volume is
121cc for our BBC 315cc.

Basic Package
Components:

• Competition 5-angle valve job
• 100% CNC Ported
  Chambers, Exhaust, and Intake
• Intake Valve,
  2.250″ 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
  Guides Intake
• Bronze
  Valve Guides Exhaust
• AFR BB Chevy 7/16 Exhaust
  Studs
• AFR BB Chevy
  7/16 Intake Studs