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Vehicle Info NeededMANLEYPART NUMBER: 660-11553-8
Severe Duty Exhaust Valves Big Block Chevy
$30107
Ships on 09/08/2026
Lowest Price GuaranteeExhaust Valves1.720'' Valve Diameter 3/8'' Valve Stem Diameter
- Severe Duty Exhaust Valves
- Big Block Chevy
- 1.720'' Diameter
- 3/8'' (0.3715'') Stem Diameter
- 5.354'' Overall Length (Stock)
- Stainless Steel
- 8/pkg.
- Type: Exhaust Valve XH-428 Material
- Head Diameter: 1.720'
- Stem Diameter: 3/8' / 0.3715'
- Installed Height: Stock
- Overall Length: 5.354'
- Tip Length: 0.220'
- Underhead Angle / Radius: 10° x 3/8'
- Margin: 0.065'
- Seat Width: 0.100'
- Top of Head: 6° Dish
- Weight / Grams: 122
Part TypeValve
BrandMANLEY
Package Height2.5
Package Width6.5
Package Length11.9
Weight2.6 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number11553-8
Package Qty1
Package TypeEA
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