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  BMF 18 Degree SBC 248cc - Assembled
  BMF 248cc 18 Degree Small Block Chevy Heads
 
Racer Price $3,195.00


Availability: Usually Ships in 2 to 4 Weeks


Description
 
BMF 18 Degree 248cc Fully CNC Ported Small Block Chevy Heads With Premium Severe Duty Stainless Steel Assembly.
 
Features
BMF SBC 238cc Flow Chart

BMF 18 Degree Small Block Chevy Heads are designed for the sportsman racer who wants more. Our approach insures that you get the right racing head for your engine program every time. 18 Degree SBC BMF heads are simply the best way to make the most power, straight out of the box! All BMF heads are fully CNC ported, not just the chambers.

Every Intake Port - Fully CNC Ported!
Every Exhaust Port - Fully CNC Ported!
Every Chamber - Fully CNC Ported!
    Features:
  • A355 T-6 Virgin Aluminum Alloy
  • BMF Exclusive V-xtreme2 Valve Seat Geometry
  • Ductile Iron Valve Seats
  • Bronze Alloy Valve Guides
  • Increased Deck Thickness
  • 63cc Chambers
  • Utilizes Existing 18 Degree SBC Intake Manifolds
  • Fits Standard Chevrolet Style Blocks
  • 18 Degree SBC Spreadport Header Pattern*
  • Requires the use of a shaft style rocker system
    Assembly Package Includes:
  • 2.125" or 2.150" Severe Duty Intake Valves
  • 1.600 Severe Duty Exhaust Valves
  • 1.640" Double Coil Valve Springs (.880 Lift)
  • 10 Degree Titanium Retainers
  • Machined Locks
  • BMF Exclusive MCV Valve Seals
  • Hardened Spring Cups
    Available Options Include:
  • Copper Alloy Seats
  • Titanium Valves
  • Header Adapter Plates for Reher Morrison Pattern*
BMF 18 Degree Small Block Chevy exhaust PortBMF 18 Degree Small Block Chevy exhaust PortBMF 18 Degree Small Block Chevy ChamberBMF 18 Degree Small Block Chevy Intake Ports
BMF 248cc Specifications
Materials
CastingA355-A Virgin Grade, Heat Treated to T-6
Valve GuidesManganese Bronze Alloy
Valve SeatsDuctile Iron

Combustion Chamber
Volume66cc


Intake
Port Volume248cc
Valve Diameter2.125", 2.150" (Bore Size Dependent)
Valve Length5.545"
Valve Stem Diameter11/32"
Valve Stem Seal Diameter.531

Exhaust
Port Volume90cc
Valve Diameter1.600"
Valve Length5.545"
Valve Stem Diameter11/32"
Valve Stem Seal Diameter.531

Valve Train
Stud SizeN/A
Guide PlatesN/A
RetainersTitanium 10 Degree
Valve Locks10 Degree Square Groove
Springs1.640'' O.D. 250lbs Installed Height, Max Lift .880"
Spring CupsN/A

Accessories
Head BoltsN/A Must Use Stud Kit!

ARP 12pt Stud Kit #234-4321
Spark Plug14mm 3/4'' reach 5/8'' Hex with washer
Stud GirdleN/A

Rocker ArmsMust Use Shaft Style Rocker Arm Kit with a Minimum .450 offset intake.

Gaskets
IntakeFel-Pro 1277, 1278, 1282, 1283, 1288
*not for port matching
Exhaust
HeadFel-Pro 1003 or 1004

Torque Specifications
Manifold Bolts35 ft/lbs
Heads Bolts/StudsSee Bolt/Stud Manufacturers recommendations


Average Customer Review: Based on 1 Reviews. Write a review.

  0 of 0 people found the following review helpful:
 
BMF on a Mullis Dragster February 27, 2009
Reviewer: Billy Currie from Lumberton, NC United States  
This cyl head/valve package is outstanding!  I have this set on a std bore/stroke 400 SBC and the results were beyond my expectations.  Before I start, the cam I have is smaller than is recomended for the heads and I'm not turning the RPM's I should.  So far I've had 1.060 60 ft times consistantly and running the low 4.90's at 138-139 MPH in the 1/8th mile.  I've had others to ask about the CID of the engine and I reply 406.  The usual response is "yea right".  I highly recomend this head manufactorer for quality and service, but you need to look for a good transmission guy too.

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