Howards Cams 518061-09 Oldsmobile Hydraulic Flat Tappet Big Mama Rattler

This Howards Cams 518061-09 Oldsmobile Hydraulic Flat Tappet Big Mama Rattler Camshaft fits 260-455 cubic inch Oldsmobile engines from 1967-1990. Howards designed this cam for street or street/strip use, and it features good low & mid-range power and a lopey idle. A 9.0:1+ compression ratio, lower rear end gears and a 2400+ stall speed torque converter are highly recommended.

Howards Cams 518061-09 Oldsmobile Hydraulic Flat Tappet Big Mama Rattler Camshaft Specs:

• For Oldsmobile 260-455 engines from 1967-1990
• Basic RPM Range: 2000 to 5400
• Valve Lift Intake: .501
• Valve Lift Exhaust: .480
• Intake Duration: 289
• Exhaust Duration: 297
• Intake Duration at .050”: 235
• Exhaust Duration at .050”: 243
• Lobe Separation: 109
• Intake Centerline: 103
• Firing Order: 1-8-4-3-6-5-7-2
• Recommended Lifter Set: 91411 Performance
• Recommended Valve Springs: 98412
• Recommended Valve Spring, Retainer and Lock Kit: 98412-K11
• Made in the USA

Notes: Stock (O.E.) valve springs can NOT be used.

Howards Cams designed this Flat Tappet Hydraulic camshaft for high performance on the street and on the drag strip.

Howards Flat Tappet Hydraulic Cams – From mild to wild, they are the ultimate in performance!