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Chevrolet Big Block

Big Block Chevy Aluminum and Cast Iron Blocks

We don't just manufacture blocks, we have literally built 1000's of engines using our own blocks. There is no better research and development program than that. We offer engine blocks in both cast iron and aluminum in a number of variations. If you are looking for the ultimate in strength and don't mind being a little heavy then cast iron is for you. If weight is a factor and you want to shed 100+ pounds or simply want the bragging rights of having a bad ass, cool looking block, then the Bill Mitchell Products aluminum block is for you.

 

TECHNICAL INFORMATION:

  • MATERIAL:  357-T6 aluminum (strongest available)  
  • DECK HEIGHT: 9.800” or 10.200"  
  • DECK THICKNESS: .600" minimum  
  • CAM BEARINGS: Standard Chevrolet big block set  
  • MAIN BEARINGS: Standard Chevrolet
  • CYLINDER BORE SPACING: 4.840" (stock)
  • CAMSHAFT LOCATION: Stock  
  • LIFTER BORES: Indexed (stock .843" bore)  
  • LIFTER ANGLES: Int.45°/Ex.39°  
  • BORE: 4.240", 4.490"  
  • MAXIMUM RECOMMENDED BORE: 4.560"  
  • CYLINDER WALL THICKNESS: (.093" @ 4.500" bore, .0625" @4.560"  bore)  
  • WATER JACKETS: Expanded for better cooling  
  • LUBRICATION:  Priority main oiling system  
  • OIL SYSTEM FEATURES:  As is, block is set up for OE style internal oil pump. Block may be converted to a dry sump oiling system.  
  • FILTRATION: Integral mount for spin-on filter  
  • OIL PAN RAILS: Solid (stock width) 
  • CRANK CLEARANCE: 4.750" stroke crank (10.2) 4.375” stroke  (9.8)  (both using H-beam steel rods - sleeves only require notching for a 4.750" stroke)
  • MAIN CAPS: 4-bolt Splayed Billet 1045 Steel
  • MAIN CAP DESIGN: All 5 Caps are 4 Bolt Design w/ center 3 splayed outer bolts
  • MAIN CAP LOCATORS: Stock Register & Ring Dowels at the center studs
  • MAIN CAP HARDWARE: ARP ½” Stud Kit  
  • MOUNTS: OEM  starter and oil filter mounts  
  • BLOCK: Side ribs for extra strength & cooling - cross-ribs in valley  
  • MOTOR MOUNTS: Dual (front and side)  
  • CYLINDER HEAD HOLES: Blind tapped to prevent leaks
  • WEIGHT: Approximately  140 lbs. with sleeves
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