Single Exhaust Valve
Compatible with: Pontiac 4.9L 301 (Enginetech V1837)
Nominal Stem Diameter: 11/32 inches
ET Stem Diameter: 0.3412 inches
Standard Head Diameter: 1.500 inches
ET Head Diameter: 1...
Single Intake Valve Compatible with: GM & Pontiac 2.5L 151 (Enginetech V9148) Nominal Stem Diameter: 8.00 mm ET Stem Diameter: 0.3135 inches Standard Head Diameter: 1.720 inches ET Head...