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COMP Cams 34-338-5

COMP Cams Drag Race Hydraulic Flat Tappet Camshaft Lift .610"/.610" Duration 312/312 RPM Range 3800-6800

249-34-338-5

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$219.99
COMP Cams Drag Race Hydraulic Flat Tappet Camshaft Lift .610"/.610" Duration 312/312 RPM Range 3800-6800 $219.99
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Drag Race Hydraulic Flat Tappet Camshaft
Lift .610"/.610"
Duration 312/312
RPM Range 3800-6800

COMP Cams 34-338-5 Details

Ford 429, 460 c.i. 8 CYL. 1968-1994

Hydraulic-Great for heavy car with 3500+ stall and 10.5:1 compression or better.

Specifications:

Exh. Duration @ .050 in. (Deg)
260
Exh. Duration Advertised (Deg)
312-6
Exhaust Valve Lift (in.)
0.61
Int. Duration @ .050 in. (Deg)
260
Intake Valve Lift (in.)
0.610
Usage
Strip
Quantity
Sold individually
Lobe Separation (Deg)
110
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.61
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.61
Valve Lift with Factory Rocker Arm Ratio
0.610 int./0.610 exh.
Advertised Duration
312 int./312 exh.
Computer-Controlled Compatible
No
Valve Springs Required
Yes
Cam Style
Hydraulic flat tappet
Exhaust Duration at 050 inch Lift
260
Intake Duration at 050 inch Lift
260
Duration at 050 inch Lift
260 int./260 exh.
Advertised Intake Duration
312
Advertised Exhaust Duration
312
Basic Operating RPM Range
3,800-6,800
Grind Number
FF 312H-10
Manufacturer's Part Number:
34-338-5
Shipping Weight:
11.5
Package Height:
2.75
Package Depth:
24.5
Package Width:
2.87

A popular street camshaft used with pre 1985s original overhead valve OEM engines, the hydraulic flat tappet cam is commonly used in up to mildly aggressive performance profiles. The flat tappet lifter has a flat appearing base (this surface is actually slightly crowned) that rides on the cam lobe face, rotating slowly within the lifter bore to promote proper oiling. Internally, the lifter features a cavity that fills with oil and a piston that is depressed by the pushrod (and valve spring). This "hydraulic chamber" provides a cushion of fluid to soften the impact on the valve train, creating room for expansion as the engine reaches operating temperature. Hydraulic flat tappet camshafts deliver quiet operation at street to mild racing engine speeds. The biggest advantage to hydraulic flat tappet lifters is that they do not require constant maintenance to ensure proper valve lash. Hydraulic flat tappet camshafts/lifters are pre-loaded at initial start-up and require little, if any, maintenance from that point forward. Flat tappet lifters can only be used once per camshaft and must be replaced due to wear patterns created by the direct contact of the cam with the lifter base.

Features:
  • Wide assortment of racing camshafts for all application requirements of drag, oval track and puller & mud competitors
  • Require accurate assessment of rear end gearing and other vehicle-based equipment to deliver top performance
  • Not made for street use or vehicles requiring accessory drive equipment, such as power brakes, air conditioning, etc.

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