Cathedral Port 5.3L 3.780" (+) Bore - Pair Black Label CNC Cylinder Head - Stainless or Titanium Valves
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Cathedral Port 5.3L 3.780" (+) Bore - Pair Black Label CNC Cylinder Head - Stainless or Titanium Valves

$3,849.99
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The Mast Motorsports cylinder head product line is completely manufactured from a raw casting to a finished cylinder head in the USA located in Nacogdoches Texas.  Mast refuses to compromise on materials and methods that may jeopardize longevity, performance, and quality.  When buying Mast Cylinder heads, you are getting the highest level of quality and performance on the market.  Cylinder Head Specs Click HERE   Full Send, no compromises, no shortcuts, ever. Dimensional Specs Bore Size: 3.780" (+) Weight: 29 lbs. Intake Valve Size: 2.040" Exhaust Valve Size: 1.570" Valve Stem Diameter: 5/16" Valve Length: 5.450" Valve Angle: 11° Valve Spring Pocket Diameter: 1.65" Valve Spring Install Height: 1.800" Head Stud Size: .493" Valve Guide OD: .502" Valve Job Type: Newen CNC 5 Angle Air Flow & Performance Criteria Intake Max. Flow: 330 CFM @ 7.000" Exhaust Max. Flow: 240 CFM @ 7.000" Intake Average Flow: 218 CFM Exhaust Average Flow: 171 CFM Intake Sea

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