Product Description

Howards Cams Big Mama Rattler Hydraulic Flat Tappet 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 doesnt thump around. They give you a the performance and throttle response you expect from a performance cam. Dont 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 and Parkerized - Ensuring the Highest Quality

Part Type: Camshaft
Application: Pontiac V8 265-455 1955-1981
Firing Order:1-8-4-3-6-5-7-2
Cam Style: Hydraulic Flat Tappet
Basic RPM Range: 2000-5400
Advertised Duration In/Ex: 289/297
Duration @ .050" In/Ex: 235/243
Valve Lift w/1.50" Rockers In/Ex: .488/.480
Lobe Separation Angle: 109
Intake Centerline: 103
Lifters Included: No
Manufacturer: Howards Cams & Racing Components
Manufacturer's Part Number: 418041-09
Manufacturer's Description:
2000-5400, Big Mama Rattler, lopey idle, street or street/strip, needs 9.5:1 compression, 2800+
Weight: 10.0lbs
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each

Note: Oil with ZDDP or ZDDP Additive required
Note: Stock (O.E.) valve springs can not be used.