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MTM510-213 - Mast CNC Bare Cylinder Head, Splayed Valve 10 Degree Intake/9 Degree Exhaust 4.125"-4.200" 6-Bolt, Single

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Item has been discontinued and is no longer available


  • Milled rocker mounts for T-D, Jesel & Mast rockers
  • Designed for any Gen III/Gen IV small block with 4.125" bore or larger
  • The 6-bolt design is compatible with GM LSX, RHS & World LSX blocks
  • Raised runner racing intake port design
  • Intake valve angle splayed 10 degrees/exhaust valve angle splayed 9 degrees
  • Uses a 2.250" intake valve and 1.600" exhaust valve
  • Mast 2-piece CNC racing intake manifold & cast racing valve covers available
  • Application List



    • 510-213
    • 510-213
    • Mast Motorsports
    • Item has been discontinued and is no longer available
    • New


    Shipping Information

    • Item Requires Shipping
    • 30.0 lbs.

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