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Best Prices: Crane 139021 Z Series Hydraulic Roller Camshaft » Crane Cams

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Part Name: Crane 139021 Z Series Hydraulic Roller Camshaft
Part Number: 139021
Part Brand: Crane Cams

Part Image / Picture

Crane 139021 Z Series Hydraulic Roller Camshaft (139021)

Part Description & Details

The Crane Z Series Hydraulic Roller Camshaft features accelerated valve action which contributes to significant improvements in low and mid-range performance by opening the intake and exhaust valves at a quicker rate. It features advertised intake duration of 296 degrees and advertised exhaust duration of 304 degrees and a lobe separation angle of 112 degrees. They have proven to be compatible with popular valve train combinations, maintaining excellent long-term reliability. Another advantage is its ability to work in concert with Quick-lift rocker arms. In order to use these camshafts, it is necessary to machine a 3/16'' wide x 7/64'' deep groove in the rear main journal of the cam to allow oil flow to the top of the engine. A compression ratio of 10.0 to 11.5 is advised.

Features:
  • Exhibits relatively smooth idle and good engine vacuum
  • Delivers solid performance gains under full acceleration
  • Increase low-end and mid-range torque
  • Auto-transmission with 3000+ converter and 3400-3800 cruise RPM
  • Easy drop-in installation and minimal horsepower-robbing harmonic frequency pulses

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