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  BMF BBC 385cc - Bare
  BMF BBC 385cc Bare
 
Racer Price $2,950.00


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 385cc Fully CNC Ported Big Block Chevy Racing Heads. These heads are bare and require assembly parts such as valves and springs.
 
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
    Available Options for This Package:
  • Chamber volumes from 114cc-124cc (119cc Standard)
  • Alloy Seats
  • Machine For Jesel Pro Series Rocker Arms
BMF 385 Specifications
Materials
CastingA356-A Virgin Grade, Heat Treated to T-6
Valve GuidesManganese Bronze Alloy
Valve SeatsDuctile Iron

Combustion Chamber
Volume119cc


Intake
Port Volume385cc
Valve Diameter2.300"
Valve Length5.494"
Valve Stem Diameter11/32"
Valve Stem Seal Diameter.531

Exhaust
Port Volume150cc
Valve Diameter1.880"
Valve Length5.422"
Valve Stem Diameter11/32"
Valve Stem Seal Diameter.531

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 BoltsExhaust upper row, 5 bolts per head longer use ARP #070-135-36

Complete ARP kit #070-135-3702
Head StudsARP #070-235-4102
Spark Plug14mm 3/4'' reach 5/8'' Hex with washer
Stud GirdleRequires BMF Stud Girdle

Rocker ArmsBig Block Chevrolet

Gaskets
IntakeFel-Pro # 375-1275* or Mr. Gasket #720-5817*
Cometic: IR-207SP3060KF .060 Thick*
Cometic: IR-207SP3125KF .125 Thick*
*not for port matching
ExhaustFel-Pro # 375-1412* or Mr. Gasket #720-5912*
*not for port matching
HeadFel-Pro #375-1017-1 or equivalent for MarkIV Fel-Pro #375-17048 or equivalent for Gen V, Gen VI Block

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



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