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• Understand the inner workings of carbs for ultimate performance
• Detailed coverage of Holley, Demon, Edelbrock, Weber, and more
• Rebuilding or modifying your carb will be demystified

• Are recommended for a wide range of race engine applications, including highly loaded flat tappet designs
• Provide exceptional high-temperature protection in high rpm engine operation, even at temperatures up to 400 Degree Fahrenheit
• Offer boosted levels of anti-wear protection (nominal phosphorus level of 1750 ppm) well beyond those of typical automotive engine oils

• Generous wall thickness for custom porting
• Does not have a valley tray (for weight reductions)
• 4.00" depth, carb. flange to plenum floor

• 6.40" carburetor pad
• With extra material for runner modification
• For use with 9.200" deck height block and M-6049-D3 heads and restrictor plate

• 6.75 carburetor pad, no valley tray included
• Single plane intake used for NASCAR restrictor plate rule and 390 CFM carburetor classes
• For use with 9.200 deck height block and M-6049-C3/D3 cylinder heads