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Vehicle Info NeededMANLEYPART NUMBER: 660-11815-8
Severe Duty Exhaust Valves Big Block Chevy
$30107
Ships on 09/08/2026
Lowest Price GuaranteeExhaust Valves1.880'' Valve Diameter 11/32'' Valve Stem Diameter
- Severe Duty Exhaust Valves
- Big Block Chevy
- 1.880'' Diameter (6° dish head)
- 11/32'' (0.3415'') Stem Diameter
- 5.522'' Overall Length (+.100)
- Stainless Steel
- 8/pkg.
- Type: Exhaust Valve XH-428 Material
- Head Diameter: 1.880'
- Stem Diameter: 11/32' / 0.3415'
- Installed Height: +.100' Longer
- Overall Length: 5.522'
- Tip Length: 0.250'
- Underhead Angle / Radius: 10° x 3/8'
- Margin: 0.075'
- Seat Width: 0.085'
- Top of Head: 6° Dish
- Weight / Grams: 125
Part TypeValve
BrandMANLEY
Package Height2.7
Package Width6.5
Package Length11.7
Weight2.57 PG
Part CategoryPerformance Parts
Valve Stem Diameter (Mm)8.661
Valve Head Diameter1.88 in (47.8 mm)
Overall Valve Length (Mm)140.259
Lock Groove Quantity1-groove
QuantitySold as a set of 8
Valve Seat Width0.1 in (2.5 mm)
Overall Valve Length5.522 in (140.3 mm)
Valve MaterialXH-428 stainless steel
Approximate Weight (G)125
Valve Head Diameter (Mm)47.752
Valve Head Style6 degree dish
Valve Tip Length0.25 in (6.4 mm)
Valve Tip Length (Mm)6.35
Undercut StemNo
Valve Stem Diameter0.341 in (8.7 mm)
Part FitmentSemi Universal
Swirl-PolishedYes
Lock Groove StyleConventional
Vendor Part Number11815-8
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
