XR258HR-10, Camshaft Part#12-408-8 Dyno Sheet
XR258HR-10, Camshaft Part#12-408-8 Dyno Sheet
Camshaft dyno sheets
 
COMP Cams, Inc.® • 3406 Democrat Road • Memphis • TN • 38118 • US 1-800-999-0853
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Dyno Results
Camshaft Part # 12-408-8 Designation XR258HR-10
Duration @ 0.006" 258 / 264 Duration @ 0.050" 206 / 212
Max Lift w/ 1.5RR 480 / .487 Lobe Separation 110
Lobe ID#'s 3311 / 3312 Intake Centerline 106
Engine Type Chevrolet 350 Small Block
Bore 4.040" Stroke 3.480"
Displacement 356 Compression 9.25:1
Heads Dart S/R Intake Edelbrock Performer
Carburetor Holley #3310 Vac. Sec. Exhaust 1 5/8" Headers
Max Torque 413 ft*lbs @ 3700 RPM Max Power 325 HP @ 4400 RPM
Manifold Vacuum 17" Hg @ 800 RPM & 18" Hg @ 1000 RPM w/ no load.
       
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