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Howards Cams Rattler™ Hydraulic Roller Camshaft
The best of both worlds. The performance of a high lift roller cam with the easy maintenance and durability of a hydraulic. These Rattler Cams™ are for street enthusiasts who want the classis exhaust sound, but also want true performance to go with it. Great for street/strip and bracket racing too. Reduce friction, increase torque and horsepower. They give you the performance and throttle response you expect from a performance cam. Rockwell checked to ensure the highest quality control standards available anywhere. If you want both sound and performance, you need a Howards Cams Rattler™. Note: to get the best exhaust, you should use a good dual exhaust system without a cross-over. A cross over will add minor performance, but mellow the exhaust tone.
Manufactured on Dedicated High Precision Machines
Held to Strict Tolerances
High grade quality cores
Rockwell Tested Ensuring the Highest Quality
Part Type: Camshaft
Application: Chrysler Big Block B/RB 383-440 1959-1980
Ignition Firing Order: OE (1-8-4-3-6-5-7-2)
Cam Style: Hydraulic Roller
Basic RPM Range: 2400-6200
Manufacturers Description: Big Daddy Rattler™, Rough idle. Pro street or street/strip. Needs 9.5:1 compression, 2800+.
Intake Duration @ .050": 243
Exhaust Duration @ .050": 251
Advertised Intake Duration (@ .006"): 296
Advertised Exhaust Duration (@ .006"): 304
Intake Valve Lift with OE Rocker Ratio (1.50): .530"
Exhaust Valve Lift with OE Rocker Ratio (1.50): .515"
Intake Lobe Lift: .353"
Exhaust Lobe Lift: .343"
Intake Valve Lift with 1.55 Rocker Ratio: .548"
Intake Valve Lift with 1.60 Rocker Ratio: .565"
Intake Valve Lift with 1.65 Rocker Ratio: .583”
Exhaust Valve Lift with 1.55 Rocker Ratio: .532"
Exhaust Valve Lift with 1.60 Rocker Ratio: .549"
Exhaust Valve Lift with 1.65 Rocker Ratio: .566"
Lobe Separation Angle: 109 Degrees
Intake Centerline: 103 Degrees
Lifters Included: No
Small Base Circle: No
Cam Gear Attachment: Single-Bolt
Valve Adjustment: Zero Lash Plus ˝ Turn
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 728085-09
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
Note: Stock (O.E) valve springs cannot be used.
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