Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededMANLEYPART NUMBER: 660-11534-1
Severe Duty Pro Flo Intake Valve Big Block Chevy
$3893
Ships on 09/09/2026
Lowest Price GuaranteeIntake Valves
- Severe Duty Pro Flo Intake Valve
- Big Block Chevy
- 2.250'' Diameter
- 3/8'' (0.3720'') Stem Diameter
- 5.433'' Overall Length (+.200)
- Stainless Steel
- 1/pkg.
- Type: Intake Valve NK-844 Material
- Head Diameter: 2.250'
- Stem Diameter: 3/8' / 0.3720'
- Installed Height: +.200' Longer
- Overall Length: 5.433'
- Tip Length: 0.220'
- Underhead Angle / Radius: Pro Flo 12° x 7/16'
- Margin: 0.065'
- Seat Width: 0.080'
- Top of Head: 7° Dish
- Weight / Grams: 156
Part TypeValve
BrandMANLEY
Package Height2.6
Package Width2.7
Package Length7.2
Weight0.4 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number11534-1
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
Some parts are not legal for use in California or other states with similar laws / regulations
