World Products BB-Chevy Merlin III Cast Iron Blocks


World Products
World Products BB-Chevy Merlin III Cast Iron Blocks

Product images may differ from actual product appearance.

Ideal for street, ET bracket racing, and marine applications, World Products applied almost 15 years of Merlin knowledge to develop these blocks, offered bare or race-prepped. The race version features a thoroughly-washed block, plate-honed cylinders to the bore size, and installed cam bearings and freeze plugs. Merlin III blocks have reinforced bulkheads and main webs, thicker decks, 100% compatibility with Mark IV components, and indexed lifter bores for optimum reliabilty. Their quality is superior to OE parts, especially because each block is CNC-machined to
QS-9000 specs using only two fixturing operations (thus avoiding tolerance stacking common to factory blocks from assembly lines).

SPECIFICATIONS

  • Material: Cast iron
  • Deck Height: 9.800" or 10.200"
  • Deck Thickness: .600" minimum
  • Cam Bearings: Standard Chevy
  • Main Bearings: Standard Chevy
  • Camshaft Location: Stock
  • Lifter Bores: Indexed
  • Bore: 4.240" or 4.490" (bare) and 4.250" or 4.500" (race)
  • Maximum Recommended Bore: 4.625"
  • Cylinder Wall Thickness: .250" @ 4.600" bore
  • Water Jackets: Expanded for better cooling
  • Lubrication: Priority main oiling system
  • Filtration: Integral mount for spin-on filter
  • Oil Pan Rails: Solid stock width (can be clearanced for Strokers)
  • Oil System Features:
    Stepped oiling
    Dry sump systems can feed from front or rear
    Oil drainback in valley lubricates distributor gear
    Drilled for dry sump valley scavenge lines
    Extra head bolt bosses in valley to accommodate special racing heads
    Blind holes drilled into valley for screen
  • Crank Clearance: 4.375" for 9.800" deck or 4.750" for 10.200" deck
  • Main Caps: 4-bolt nodular iron or splayed billet steel
  • Rear Main: 2-piece rear main seal
  • Fuel Pump Mount: OE mount
  • Starter: OE mount
  • Motor Mounts: Front and side
  • Cylinder Head Holes: Blind tapped to prevent leaks
  • Weight: Approximately 270 lbs



    		•
    Merlin III Cast Iron Bare Blocks

    		955-081100
    		BB-Chevy Merlin III Bare Block
  • Bore: 4.240"
  • Deck Height: 9.800"
  • Main Caps: Nodular iron
    View this item
    $119.00
    		• $2,216.99
    Ships
    02/22/12

    		955-081101
    		BB-Chevy Merlin III Bare Block
  • Bore: 4.490"
  • Deck Height: 9.800"
  • Main Caps: Nodular iron
    View this item
    $119.00
    		• $2,216.99
    Ships
    03/05/12

    		955-081111
    		BB-Chevy Merlin III Bare Block
  • Bore: 4.490"
  • Deck Height: 10.200"
  • Main Caps: Nodular iron

    *While Supplies Last*

    View this item
    $159.00
    		• $2,216.99
    Ships
    02/22/12

    		955-085010
    		BB-Chevy Merlin III Bare Block
  • Bore: 4.490"
  • Deck Height: 9.800"
  • Main Caps: Splayed billet
    View this item
    $119.00
    		• $2,699.99
    Ships
    02/22/12

    		955-085110
    		BB-Chevy Merlin III Bare Block
  • Bore: 4.490"
  • Deck Height: 10.200"
  • Main Caps: Splayed billet

    *While Supplies Last*

    View this item
    $119.00
    		• $2,699.99
    Ships
    02/22/12
    Merlin III Cast Iron Race Blocks
      955-081100-4250
    		BB-Chevy Merlin III Race Block
  • Bore: 4.250"
  • Deck Height: 9.800"
  • Main Caps: Nodular iron
    View this item
    $159.00
    		• $2,716.99
    Ships
    02/22/12
      955-081101-4500
    		BB-Chevy Merlin III Race Block
  • Bore: 4.500"
  • Deck Height: 9.800"
  • Main Caps: Nodular iron

    *While Supplies Last*

    View this item
    $119.00
    		• $2,716.99
    Ships
    02/22/12
      955-081110-4250
    		BB-Chevy Merlin III Race Block
  • Bore: 4.250"
  • Deck Height: 10.200"
  • Main Caps: Nodular iron
    View this item
    $119.00
    		• $2,716.99
    Ships
    02/22/12
      955-081111-4500
    		BB-Chevy Merlin III Race Block
  • Bore: 4.500"
  • Deck Height: 10.200"
  • Main Caps: Nodular iron
    View this item
    $99.00
    		• $2,716.99
    Ships
    02/22/12
      955-085010-4500
    		BB-Chevy Merlin III Race Block
  • Bore: 4.500"
  • Deck Height: 9.800"
  • Main Caps: Splayed billet
    View this item
    $159.00
    		• $3,199.99
    Ships
    02/22/12
      955-085110-4500
    		BB-Chevy Merlin III Race Block
  • Bore: 4.500"
  • Deck Height: 10.200"
  • Main Caps: Splayed billet
    View this item
    $159.00
    		• $3,199.99
    Ships
    02/22/12