Comp Cams 08-413-8 SBC Extreme 4x4 Hydraulic Roller Camshaft X4270HR

This Comp Cams 08-413-8 SBC X4270HR Extreme 4x4 Hydraulic Roller Camshaft fits the 305-350 Small Block Chevy from 1987-1998 with O.E. Hydraulic Roller Cams. Comp designed this cam for street performance/strip use, and it features good mid-range power and a noticeable idle. A 9.5:1 or higher compression ratio, aftermarket/ported intake, 3.55 - 4.10 rear end gears and a 1900+ stall speed torque converter are highly recommended.

Comp Cams 08-413-8 SBC X4270HR Extreme 4x4 Hydraulic Roller Camshaft Specs:

• For 305-350 cubic inch Small Block Chevy engines from 1987-1998
• Must use bronze tip fuel pump pushrod when using high pressure or high-volume pump
• Stock (O.E.) valve springs can NOT be used
• Basic RPM Range: 1500 to 5200
• Valve Lift Intake: .474
• Valve Lift Exhaust: .474
• Advertised Intake Duration: 270
• Advertised Exhaust Duration: 274
• Intake Duration at .050”: 220
• Exhaust Duration at .050”: 224
• Lobe Separation: 111
• Firing Order: 1-8-4-3-6-5-7-2
• Made in the USA

Note: 1996-99 Vortec engines may experience retainer to valve guide clearance issues with anything over .470” valve lift.

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

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