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COMP Cams 12-865-9

Drag Race Mechanical Roller Camshaft Lift .684"/.660" Duration 307/317 RPM Range 4500-7800

COMP Cams 12-865-9

249-12-865-9

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COMP Cams 12-865-9 Drag Race Mechanical Roller Camshaft Lift .684"/.660" Duration 307/317 RPM Range 4500-7800 $331.99
Drag Race Mechanical Roller Camshaft
Lift .684"/.660"
Duration 307/317
RPM Range 4500-7800

COMP Cams 12-865-9 Details

Chevy 262-400ci Small Block 1955-98

Mechanical Roller-Latest design for 350 with race heads, 5500 stall.

Specifications:

Exhaust Valve Lift (in.)
0.66
Intake Valve Lift (in.)
0.684
Int. Duration @ .050 in. (Deg)
278
Exh. Duration @ .050 in. (Deg)
284
Exh. Duration Advertised (Deg)
317
RPM Range
4500-7800
Engine Make/Size
Chevy Small Block (262-400)
Lifter Type
Mechanical Roller
Int. Duration Advertised (Deg)
307
Usage
Strip
Advertised Duration
307 int./317 exh.
Advertised Exhaust Duration
317
Advertised Intake Duration
307
Basic Operating RPM Range
4,500-8,000
Cam Style
Mechanical roller tappet
Computer-Controlled Compatible
No
Duration at 050 inch Lift
278 int./284 exh.
Exhaust Duration at 050 inch Lift
284
Exhaust Valve Lash (in.)
0.018
Exhaust Valve Lift with Factory Rocker Arm Ratio (
0.66
Grind Number
307-R6
Intake Duration at 050 inch Lift
278
Intake Valve Lash (in.)
0.016
Intake Valve Lift with Factory Rocker Arm Ratio (i
0.684
Quantity
Sold individually
Valve Lift with Factory Rocker Arm Ratio
0.684 int./0.660 exh.
Valve Springs Required
Yes
Lobe Separation (Deg)
106
Manufacturer's Part Number:
12-865-9

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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