Engine Kits

Comp Cams 08-409-8 Xtreme 4x4™ X4258HR; 1000 to 5000 RPM Range
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Comp Cams 08-409-8 Xtreme 4x4™ X4258HR; 1000 to 5000 RPM Range



Part #: 08-409-8
List Price: $586.88
Our Price: $316.04
You Save: $270.84

Availability: In Stock


For OE-Style Hydraulic Roller Lifters; Fits '87-'02 305-350 cid Chevy Small Blocks2 (Except LT1)

Strong torque • Good mileage • For stock to mildly modified engines

Xtreme 4X4™ Cams: Improved throttle response & increased low & mid-range RPM horsepower for towing & off-road • Designed for use w/ common restrictive factory exhaust systems; Including OEM exhaust manifolds
Advertised Duration 258 int./262 exh.
Advertised Exhaust Duration 262
Advertised Intake Duration 258
Basic Operating RPM Range 1,000-5,000
Brand COMP Cams
Cam Style Hydraulic roller tappet
Computer-Controlled Compatible No
Duration at 050 inch Lift 206 int./210 exh.
Exhaust Duration at 050 inch Lift 210
Exhaust Valve Lash 0.000 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.458 in.
Grind Number CS X4 258HR-11
Intake Duration at 050 inch Lift 206
Intake Valve Lash 0.000 in.
Intake Valve Lift with Factory Rocker Arm Ratio 0.458 in.
Lobe Separation (degrees) 111
Part Type Camshafts
Product Line COMP Cams Xtreme 4x4 Camshafts
Quantity Sold individually.
Valve Lift with Factory Rocker Arm Ratio 0.458 int./0.458 exh. lift