World Products Releases All New Merlin IV BBC Block

New from World Products – the redesigned and re-tooled Merlin Big Block. This new block is designed to be the most technologically advanced and best performing iron BBC block. See more details below.

Official Release:

World Products has completely redesigned and re-tooled the famed Merlin Big Block, making improvements to virtually every area of the new Merlin IV with the goal of producing the most technologically advanced and best performing iron BBC block available today!

New features include thicker main webs for increased strength and thicker cylinder walls which are nominally .310″ @ 4.600″ bore. In addition to the standard BBC 9.800″ and 10.200″ deck heights, new are deck heights measuring 9.500″, 9.850″ and 10.250″.

The Merlin IV is available with a 2.120″ BBC cam journal and standard .842″ lifter bores, or with a 2.283″ journal for a 55mm Babbitt cam and .904″ lifter bores. World also has added a front oil feed for dry sump systems, and relocated the lifter oil feeds and restrictor provisions to the front of the block.

Cast and machined in ISO 9000 certified facilities, the Merlin IV is 100% American made and subject to stringent quality assurance procedures to ensure superior quality and performance.

Features:

  • Thicker main webs for increased strength and thicker cylinder walls
  • Added front oil feed for dry sump systems
  • 100% American made and subject to stringent quality assurance procedures

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About the author

Chris McWilliams

Chris McWilliams grew up watching his dad race go-karts around his Southern Indiana home and started racing junior dragsters when he was 10 years old. Chris drove a UMP Mini Stock for two seasons until he totaled his racecar in an accident at Western Kentucky Speedway. He is currently a college student at Oakland City University working on a degree to pay the bills for his dirt racing addiction.
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