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Instruction Sheets for Part Number CRN-139021
Technical Articles for Part Number CRN-139021
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Crane Hydraulic Roller Camshafts
Camshaft, Hydraulic Roller Tappet, Adv. Duration 296/304, Lift .610/.632, Retrofit, Chevy, Big Block, Each
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Overview
Brand:
Manufacturer's Part Number:
139021
Part Type:
Product Line:
Summit Racing Part Number:
CRN-139021
UPC:
021174125191
Cam Style:
Hydraulic roller, Retro-fit
Basic Operating RPM Range:
2,200-6,000
Intake Duration at 050 inch Lift:
234
Exhaust Duration at 050 inch Lift:
242
Duration at 050 inch Lift:
234 int./242 exh.
Advertised Intake Duration:
296
Advertised Exhaust Duration:
304
Advertised Duration:
296 int./304 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.610 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.632 in.
Valve Lift with Factory Rocker Arm Ratio:
0.610 int./0.632 exh.
Lobe Separation (degrees):
112
Remanufactured:
No
Computer-Controlled Compatible:
No
Grind Number:
ZHR-296-2S-12 IG ZCAM
Valve Springs Required:
Yes
Quantity:
Sold individually.
Crane Hydraulic Roller Camshafts
Crane hydraulic roller camshafts are a good reason why virtually all pushrod-style engines manufactured for over two decades are equipped with hydraulic roller cams. Simply stated, the best way to get a wider torque band is to step up to a hydraulic roller cam in your small or big block Chevy, Ford, Mopar, AMC, Olds, or Pontiac. The roller cams' ability to quickly open and close the valves allows for more sophisticated camshaft profiles, while the hydraulic lifter body eliminates the need to constantly set valve lash. Crane Cams has the industry's largest database of camshaft profiles. This enables Crane to provide you with the camshaft that's ideally suited for your application. They also have an exceptional "flat" power curve and are a popular retrofit into older engines. Crane hydraulic roller camshafts are the starting and ending points for your camshaft needs.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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