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BB Mopar Aluminum

BMP Hemi/Wedge Aluminum Engine Blocks 

Bill Mitchell Products engineers have collaborated with leading Chrysler racers and developed a highly refined version of the original 426-style  block. It's been designed using CAD/CAM 3D technology not available when the original was developed, and is manufactured to far more critical specifications. The BMP 426 Hemi features dual pattern Chrysler/GM bellhousings & more efficient lubrication. This is the ultimate block for Chrysler applications! Available in Hemispherical or Wedge configurations.

In production and currently running 120-160 day lead time. Due to the high demand we are taking orders with small deposits of $500.00 to reserve spot on the schedule. To leave a deposit you must call in and speak with one of us. The website can only take full payments but if you wish to do this then we will pick up the freight on paid in full orders.

 

 

TECHNICAL INFORMATION:

  • Material: 357-T6 Aluminum
  • Deck Height: 10.725"
  • Deck Thickness: .600" minimum
  • Cam Bearings: Stock (can be machined for 60mm)
  • Camshaft Location: Standard
  • Lifter Bores: .904"bronze bushings on a 45 Degree Lifter Bank with .035" feed hole
  • Cylinder Bore Spacing: 4.80"(stock)
  • Bores Available: 4.240" and 4.490"
  • Maximum Bore: 4.560"
  • Sleeves: Centrifugally cast ductile iron 
  • Water Jackets: Expanded for better cooling
  • Lubrication: Priority main oiling system
  • Oil System Features: Std oil pump location,
  • Crank Clearance: 4.500" max stroke, 4.750" with additional clearance
  • Main Caps: crossed bolted nodular iron
  • Main Cap Hardware: ARP 1/2" Studs
  • Rear Main Seal: Std
  • Oil Pan Rails: Std
  • Dip Stick: Std
  • Fuel Pump: OEM mount
  • Starter: OEM mount
  • Motor Mounts: Dual (front and side)
  • Cylinder Head Holes: Extra deep holes for more thread engagement, Blind tapped to prevent leaks
  • Bellhousing: Dual (accomodates stock and GM)
  • Weight: Approximately 175 lbs.
  • Cam Bearings: Std
  • Dowel Pin Kit: BMP 701595-K

MORE INFORMATION

  1. Click here to view Instruction Sheet. - PDF Adobe Reader Required.