Howards Cams 518005-09 Oldsmobile 4/7 Swap Hydraulic Roller Rattler

This Howards Cams 518005-09 Oldsmobile Retro-Fit 4/7 Swap Hydraulic Roller Camshaft fits 260-455 cubic inch Oldsmobile engines from 1967-1990. Howards designed this cam for high performance street/strip use, and it features a broad low to mid-range power band and a choppy idle. A 9.5:1+ compression ratio, lower rear end gears and a 2200+ stall speed torque converter are highly recommended.

4/7 Swap camshafts change the firing order to create even more power!

Howards Cams 518005-09 Oldsmobile Hydraulic Roller Rattler Camshaft Specs:

• Ignition Firing Order Must Be Changed To: 1-8-7-3-6-5-4-2
• For Oldsmobile 260-455 engines from 1967-1990
• Basic RPM Range: 1800 to 5200
• Valve Lift Intake: .560
• Valve Lift Exhaust: .565
• Intake Duration: 280
• Exhaust Duration: 288
• Intake Duration at .050”: 227
• Exhaust Duration at .050”: 235
• Lobe Separation: 109
• Intake Centerline: 103
• Made in the USA

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

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

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