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Technical Articles for Part Number ISK-201LR4
Isky Oval Track Hydraulic Flat Tappet Camshafts 201LR4
Part Number: ISK-201LR4
Isky Oval Track Hydraulic Flat Tappet Camshafts
Camshaft, Hydraulic Flat Tappet, Advertised Duration 296/296, Lift .420/.420, Chevy, Small Block, Each
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Estimated Ship Date from Georgia: Tomorrow Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
201LR4
Part Type:
Product Line:
Summit Racing Part Number:
ISK-201LR4
Item Number:
120889
Cam Style:
Hydraulic flat tappet
Camshaft Use:
Circle Track
Camshaft Manufacturers Description:
.420 lift rule class; high banked 1/2 mile tracks.
Basic Operating RPM Range:
3,000-7,200
Intake Duration at 050 inch Lift:
248
Exhaust Duration at 050 inch Lift:
248
Duration at 050 inch Lift:
248 int./248 exh.
Advertised Intake Duration:
296
Advertised Exhaust Duration:
296
Advertised Duration:
296 int./296 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.420 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.420 in.
Valve Lift with Factory Rocker Arm Ratio:
0.420 int./0.420 exh.
Lobe Separation (degrees):
105
Remanufactured:
No
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Quantity:
Sold individually.
Notes:
Designed for 0.420 valve lift rule for Oval Track classes.
Isky Oval Track Hydraulic Flat Tappet Camshafts
Since Isky is the world's largest camshaft maker--and one of the most innovative--it stands to reason that they make a good oval track cam. Their oval track hydraulic flat tappet cams are manufactured from the highest quality materials, using Isky's famous craftsmanship to ensure you of a long cam life. You can depend on Isky to provide the horsepower and torque that you need to get off the line and on your way to the winner's circle.
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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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