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COMP Cams 12-817-9

Drag Race Mechanical Roller Camshaft Lift .739"/.693" Duration 307/320 RPM Range 4500-8500

COMP Cams 12-817-9

249-12-817-9

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COMP Cams 12-817-9 Drag Race Mechanical Roller Camshaft Lift .739"/.693" Duration 307/320 RPM Range 4500-8500 $393.99
Drag Race Mechanical Roller Camshaft
Lift .739"/.693"
Duration 307/320
RPM Range 4500-8500

COMP Cams 12-817-9 Details

Chevy 262-400ci Small Block 1955-98

Mechanical Roller-Bracket with good heads and small Comp eliminator 1.6 & 1.6.

Specifications:

Exhaust Valve Lift (in.)
0.693
Intake Valve Lift (in.)
0.739
Int. Duration @ .050 in. (Deg)
274
Exh. Duration @ .050 in. (Deg)
282
Exh. Duration Advertised (Deg)
320
RPM Range
4500-8500
Engine Make/Size
Chevy Small Block (262-400)
Lifter Type
Mechanical Roller
Int. Duration Advertised (Deg)
307
Usage
Strip
Lobe Separation (Deg)
112
Advertised Duration
307 int./320 exh.
Advertised Exhaust Duration
320
Advertised Intake Duration
307
Basic Operating RPM Range
4,500-8,500
Cam Style
Mechanical roller tappet
Camshaft Gear Attachment
3-bolt
Computer-Controlled Compatible
No
Duration at 050 inch Lift
274 int./282 exh.
Exhaust Duration at 050 inch Lift
282
Exhaust Valve Lash (in.)
0.028
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.739
Grind Number
307RXD-12
Intake Duration at 050 inch Lift
274
Intake Valve Lash (in.)
0.026
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.739
Quantity
Sold individually
Valve Lift with Factory Rocker Arm Ratio
0.739 int./0.739 exh.
Valve Springs Required
Yes
Manufacturer's Part Number:
12-817-9

Roller Cam For On Demand Power

Camshafts specifically designed for use in all ''Super'' catagory cars, especially those equipped with throttle stops. These powerful Comp Cams offer crisp, immediate throttle response and excellent repeatability, plus are relatively easy on valve train parts.

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.

    Small Kits are indicated by a SK in their part number and include Camshaft, Lifters, Timing Chain Set, Assembly Lube, Decals, and Instructions.

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