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Howards Cams 122521-15 Hydraulic Flat Tappet Camshaft for Chevy Big Block

Manufacturer

Picture for manufacturer Howards Cams

Part Number

122521-15
7 reviews
Sale Price

$253.71

2 left at this price

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Usually delivered within 2 days

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Product Details

The Howards Cams 122521-15 is a hydraulic flat tappet camshaft designed for Chevrolet big block V8 engines. This performance camshaft delivers increased power and torque across a broad RPM range, making it an excellent choice for street performance and muscle car applications.

Key Specifications:

  • Camshaft Type: Hydraulic flat tappet
  • Advertised Duration: 275° intake / 289° exhaust
  • Valve Lift: .504" intake / .504" exhaust
  • Application: Chevrolet big block engines
  • Configuration: Single camshaft

Performance Features:

  • Aggressive duration split optimized for enhanced exhaust scavenging
  • Symmetric lift profile ensures balanced valve train dynamics
  • Hydraulic design provides quiet operation and reduced maintenance
  • Flat tappet construction compatible with standard lifter bores

This camshaft profile provides improved mid-range power delivery while maintaining excellent drivability characteristics. The hydraulic flat tappet design eliminates the need for frequent valve adjustments, making it ideal for street-driven vehicles. Compatible with standard Chevrolet big block valve train components and factory hydraulic lifters.

Products specifications

Advertised Duration

275 int./289 exh.

Cam Style

Hydraulic flat tappet

Camshaft Manufacturers Description

Fair idle. Excellent in performance and marine applications.

Duration at 050 inch Lift

221 int./235 exh.

Exhaust Duration at 050 inch Lift

235

Exhaust Valve Lift with Factory Rocker Arm Ratio

0.504 in.

Intake Duration at 050 inch Lift

221

Intake Valve Lift with Factory Rocker Arm Ratio

0.504 in.

Lobe Separation (degrees)

115

Quantity

Sold individually.

Valve Lift with Factory Rocker Arm Ratio

0.504 int./0.504 exh.

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