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Vehicle Info NeededMANLEYPART NUMBER: 660-11539-1
Severe Duty Exhaust Valve Small Block Chevy
$3764
Ships on 09/08/2026
Lowest Price GuaranteeExhaust Valves1.600'' Valve Diameter 11/32'' Valve Stem Diameter 10° x 3/8'' Underhead Angle/Radius
- Severe Duty Exhaust Valve
- Small Block Chevy
- 1.600'' Diameter
- 11/32'' (0.3415'') Stem Diameter
- 5.036'' Overall Length (+.100)
- 10° x 3/8'' Underhead Angle/Radius
- Stainless Steel
- 1/pkg.
- Type: Exhaust Valve XH-428 Material
- Head Diameter: 1.600'
- Stem Diameter: 11/32' / 0.3415'
- Installed Height: +.100' Longer
- Overall Length: 5.036'
- Tip Length: 0.250'
- Underhead Angle / Radius: 10° x 3/8'
- Margin: 0.085'
- Seat Width: 0.085'
- Top of Head: 7° Dish
- Weight / Grams: 102
Part TypeValve
BrandMANLEY
Package Height1.6
Package Width3.6
Package Length8.1
Weight0.23 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number11539-1
Package Qty1
Package TypeEA
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