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Vehicle Info NeededMANLEYPART NUMBER: 660-12320-8
Race Master Intake Valves Small Block Chevy
$20255
Ships on 09/28/2026
Lowest Price GuaranteeIntake Valves5/16'' Valve Stem Diameter
- Race Master Intake Valves
- Small Block Chevy
- 2.125'' Diameter
- 5/16'' (0.3110'') Stem Diameter
- 5.110'' Overall Length (+.200)
- Stainless Steel
- 8/pkg.
These 5/16' (.3110') stem valves are ONLY available with Bead Loc keeper grooves. Bead Loc valve locks are REQUIRED.
- Type: Intake Valve NK-842 Material
- Head Diameter: 2.125'
- Stem Diameter: 5/16' / 0.3110'
- Installed Height: +.200' Longer
- Overall Length: 5.110'
- Tip Length: 0.290'
- Underhead Angle / Radius: 10° x 3/8'
- Margin: 0.050'
- Seat Width: 0.080'
- Top of Head: 5° Dish
- Weight / Grams: 117
Part TypeValve
BrandMANLEY
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number12320-8
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
