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Howards Cams Rattler™ Retro-Fit Hydraulic Roller Camshaft
Rattlers cams are for street enthusiasts who want the classic exhaust sound, but also want true performance to go with it. These camshafts offer performance that just doesn’t thump around. They give you a the performance and throttle response you expect from a performance cam. Don’t let the others fool you, sound is not everything. If you want both sound and performance, you need a Howards Cams Rattler™. The best of both worlds. Note: To get the best exhaust tone, 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: Ford FE 352-428 1963-1977
Ignition Firing Order: OE (1-5-4-2-6-3-7-8)
Cam Style: Retro-Fit Hydraulic Roller
Basic RPM Range: 2400-5600
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 (1.75): .618"
Exhaust Valve Lift with OE Rocker Ratio (1.75): .601”
Intake Lobe Lift: .353
Exhaust Lobe Lift: .343"
Intake Valve Lift with 1.70 Rocker Ratio: .600"
Intake Valve Lift with 1.80 Rocker Ratio: .636"
Exhaust Valve Lift with 1.70 Rocker Ratio: .584"
Exhaust Valve Lift with 1.80 Rocker Ratio: .618"
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: 258085-09
Weight: 10.0 lbs.
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
Note: Stock (O.E.) valve springs can not be used.
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