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  BMF BBC 310cc - Assembled
  BMF BBC 310cc - Assembled
 



Racer Price $3,650.00


Availability:: Usually Ships in 2 to 4 Weeks

Bore Size


Chamber Size

  
Seat Options

Copper Alloy Seats:
 [Add $400.00]
Machine for Jesel Pro Series

 [Add $100.00]

 
Description
 
BMF 310cc Fully CNC Ported Big Block Chevy Racing Heads with Premium Stainless Steel Assembly Package.
 
Features

Own the most powerful conventional style big block chevy heads available. BMF's superior design enables your engine to produce incredible horsepower and torque numbers that were previously thought to be unobtainable using a conventional style cylinder head. Our big block Chevy heads are fully CNC ported using state-of-the-art 5 axis cnc equipment implementing our over 20 years of experience engineering power producing porting technology for the racing industry. Owning the best set of big block Chevy heads available is just one click away. All BMF heads are fully CNC ported, not just the chamber.

Every Intake Port - Fully CNC Ported!
Every Exhaust Port - Fully CNC Ported!
Every Chamber - Fully CNC Ported!
    Features:
  • A356 T-6 Virgin Aluminum Alloy
  • BMF Exclusive V-xtreme2 Valve Seat Geometry
  • Heart-Shaped Combustion Chambers
  • Raised Exhaust Ports (.625")
  • Increased Deck Thickness (.700)
  • Drilled and Tapped for Inside Head Bolts
  • Ductile Iron valve Seats
  • Bronze Alloy Valve Guides
  • Fits Standard Chevrolet Style Blocks
  • Utilizes existing BBC intake manifolds
  • Uses standard BBC header pattern
  • Uses standard BBC Rocker arms*
  • Accessory Bolt holes in stock location
    Assembly Package Includes:
  • 2.300" Stainless Steel Intake Valves
  • 1.880" Stainless Steel Exhaust Valves
  • 1.640" Double Coil Valve Springs (.880 Lift)
  • 10 Degree Titanium Retainers
  • Machined Locks
  • BMF Exclusive MCV Stem Seals
  • Hardened Spring Cups
    Available Options for This Package:
  • Chamber volumes from 114cc-124cc (119cc Standard)
  • Alloy Seats
  • Machine For Jesel Pro Series Rocker Arms
BMF 310 Specifications
Materials
CastingA356-A Virgin Grade, Heat Treated to T-6
Valve GuidesManganese Bronze Alloy
Valve SeatsDuctile Iron

Combustion Chamber
Volume119cc


Intake
Port Volume310cc
Valve Diameter2.300"
Valve Length5.494"
Valve Stem Diameter11/32"
Valve Stem Seal Diameter .500

Exhaust
Port Volume150cc
Valve Diameter1.880"
Valve Length5.422"
Valve Stem Diameter11/32"
Valve Stem Seal Diameter .500

Valve Train
Stud Size7/16"
Guide PlatesBig Block Chevrolet
RetainersTitanium 10 Degree
Valve Locks10 Degree Square Groove
Pushrods3/8" Heat Treated, Must Check Length
Springs1.640'' O.D. 250lbs Installed Height, Max Lift .880"
Spring Cups1.740" O.D. - .060" Thick

Accessories
Head Bolts Exhaust upper row, 5 bolts per head longer use ARP #135-3612

Complete ARP kit #135-3702
Head Studs ARP #235-4102
Spark Plug14mm 3/4'' reach 5/8'' Hex with washer
Stud GirdleRequires BMF Stud Girdle

Rocker ArmsBig Block Chevrolet

Gaskets
Intake Fel-Pro # 1275* or Mr. Gasket #5817*
Cometic: IR-207SP3060KF .060 Thick*
Cometic: IR-207SP3125KF .125 Thick*
*not for port matching
Exhaust Fel-Pro #1412* or Mr. Gasket #5912*
*not for port matching
Head

Fel-Pro #1017-1 Gen IV (Gen 4)
Fel-Pro #17048 Gen VI (Gen 6)


Torque Specifications
Rocker Studs45 ft/lbs
Manifold Bolts35 ft/lbs
Heads Bolts/StudsSee Bolt/Stud Manufacturers recommendations

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