Description
This Comp Cams 51-220-4 Pontiac XE250H Xtreme Energy Hydraulic Flat Tappet Camshaft fits the 265-455 Pontiac engines from 1955-1981. Comp designed this cam for street/strip use, and it features very strong torque with excellent mileage and a smooth idle. A 9.0:1 or higher compression ratio and a 1200+ stall speed torque converter are highly recommended.
Comp Cams 51-220-4 Pontiac XE250H Xtreme Energy Hydraulic Flat Tappet Camshaft Specs:
- For 265-455 cubic inch Pontiac engines from 1955-1981
- Stock (O.E.) valve springs can NOT be used.
- Basic RPM Range: 600 to 4800
- Valve Lift Intake: .432
- Valve Lift Exhaust: .444
- Advertised Intake Duration: 250
- Advertised Exhaust Duration: 250
- Intake Duration at .050”: 206
- Exhaust Duration at .050”: 212
- Lobe Separation: 110
- Intake Centerline: 106
- Firing Order: 1-8-4-3-6-5-7-2
- Made in the USA
Comp Cams designed this Hydraulic Flat Tappet camshaft for high performance on the street and drag strip.
Comp Cams –The Absolute Leader In Valve Train Technology!
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