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$157.95
COMP Cams 12-240-4 S/B Chevy Vacuum Rule Hydraulic Cam, 1600-5800 RPM
COMP Cams 12-240-4 S/B Chevy Vacuum Rule Hydraulic Cam, 1600-5800 RPM

COMP Cams 12-240-4 S/B Chevy Vacuum Rule Hydraulic Cam, 1600-5800 RPM

Chevy Small Block V8, Hydraulic Flat Tappet Camshaft Type, 1600-5800 RPM Range

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COMP Cams 12-240-4 S/B Chevy Vacuum Rule Hydraulic Cam, 1600-5800 RPM
COMP Cams 12-240-4 S/B Chevy Vacuum Rule Hydraulic Cam, 1600-5800 RPM
COMP Cams 12-240-4 S/B Chevy Vacuum Rule Hydraulic Cam, 1600-5800 RPM
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COMP Cams 12-240-4 S/B Chevy Vacuum Rule Hydraulic Cam, 1600-5800 RPM
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We estimate this item will ship on or before April 26th.
Part # 282122404
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Details

Camshaft Type:
Hydraulic Flat Tappet
RPM Range:
1600-5800
Intake Duration:
270
Exhaust Duration:
286
Intake Duration (.050" Lift):
226
Exhaust Duration (.050" Lift):
236
Intake Valve Lift w/ Rocker Arm Ratio:
0.480"
Exhaust Valve Lift w/ Rocker Arm Ratio:
0.489"
Lobe Separation:
112 °
Grind Number:
XM270H
MFG. Part #:
12-240-4
GTIN Code:
036584038344
Valve Springs Required:
Yes
Sold in Quantity:
Each

Info

There are many things that effect vacuum. Camshaft lobe separation, lifter style, intake manifold, piston rings, compression ratio and overall valve and engine condition. Due to many and varied engine combinations, Speedway Motors offers no warranty on camshaft and or lifters for either performance, vacuum or longevity.

Must be used with break-in oil additive (sold separately).

Vacuum Rule Cam Chart (GIF)

282-122404 Specs (PDF)

Important Messages

  • This item ships directly from the manufacturer. It may take an additional 6 business days for COMP Cams to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
Some parts are not legal for use in California or other states with similar laws/regulations

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Reviews

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Videos & Articles
  • Visit the Toolbox

    The Toolbox is Speedway Motors' hub for professionally written articles.

  • What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.
  • Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!

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