PONTIAC 400 & 455

2.110"/1.770” STAINLESS STEEL VALVES- 16 valves

Used in most 1972 up engines.

This length is common to 1972 and up 400 & 455 engines.

Valves are premium one piece forged stainless steel which can be used in all high performance applications.

Note- Pontiac engines have many variations of valve head diameters, face angles and lengths. It is best to not assume sizes by year or model. Always measure the old valves before ordering.

      Specifications:

• Intake: Head Diameter- 2.110”
• Overall Length, Intake- 4.970"
• Intake face angle 30 degree
  
• Overall Length, Exhaust- 4.970”
• Exhaust Head Diameter: 1.770”
  
• Exhaust face angle- 45 degree
  
• 11/32” Stems
• Double Groove Intakes
• Single Groove Exhaust
  
• Swirl Polished Underhead area
• Chrome Stems
• Single Piece Construction
• Hard Tips to reduce wear
• Top of valve head is cupped on the intake and flat on the exhaust
  
• Order is for 16 valves, eight intake and eight exhaust.