R4 Race Blocks
  • Siamese Bore Casting
  • 2.25" Mains (302 Ford Main Bearings) - Requires Custom Crank
  • Main Caps: 4-Bolt, Center 3 Caps - Billet Steel
  • Deck Height: 8.575"
  • Dry Sump Oiling System Only
  • Cam Bearings - Not Included - Must use 60mm Roller Cam Bearings P5007361 & Custom Cam
  • Rough Bored to 4.050"


  • Camshaft Cores - Unground Lobe