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COMP Cams 12-675-4 S/B Chevy Vacuum Solid Lifter Cam, 1300-5800 RPM

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Specs
Sold in Quantity:
Each
MFG. Part #:
12-675-4
RPM range:
1300 to 5800
Intake Duration:
262
Exhaust Duration:
268
Lobe Seperation:
110
Camshaft Type:
Solid Flat Tappet
Intake Duration @ .050" Lift:
224
Exhaust Duration @ .050" Lift:
230
COMP Cams 12-675-4 S/B Chevy Vacuum Solid Lifter Cam, 1300-5800 RPM
COMP Cams 12-675-4 S/B Chevy Vacuum Solid Lifter Cam, 1300-5800 RPM

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Watch the video below to see how Comp Cams are made.

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COMP Cams 12-675-4 S/B Chevy Vacuum Solid Lifter Cam, 1300-5800 RPM

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Q & A

What's in the Box

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)

282-126754 Specs (PDF)

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COMP Cams 12-676-4 S/B Chevy Vacuum Solid Lifter Cam, 1600-6000 RPM
                        

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) 

282-126764 Specs (PDF)

Speedway Small Block Chevy Solid Lifters
                        Any time you put in a new cam, you must use new lifters! 

Mechanical lifters feature precision ground bodies for long life and durability. For engines that require top end oiling through the lifter.

Our lifters feature precise oil metering to ensure proper lubrication of the rocker arms and related components, while eliminating excess oil to the rest of the valve train. All 1955-86 Chevy V8. Set of 16.

 

 

Isky Racing Cams RL-48 Camshaft Rev Lube, 4 Oz.
                        

Isky Rev Lube is a moly-sulphide paste used to protect cam lobes and tappets, rocker arms, valve stems and guides, push rod ends and distributor drive gears during initial start-up and break-in.

Learn why using assembly lube is so important in our tech article, Installing New Hardware.

COMP Cams 159-12 Engine Break-In Lube Oil Additive
                        

ZDDP-enhanced Engine Break-In Lube Oil Additive from COMP Cams provides maximum engine life while also allowing it to reach its full performance potential. It does so by improving the surface mating of valve train components (especially flat tappets), rotating assembly, rod journals, piston rings, valve guides and other vital areas of the engine. This proprietary break-in lube formula includes the optimum amount of critical additives ZDDP (Zinc & Phosphorus), Molybdenum, detergents and high grade base oil.

The multi-viscosity, mineral-based COMP Cams Engine Break-In Oil Additive is fully-formulated and requires no additives or supplements. In addition, the oil is fully compatible with gasoline, methanol and high octane racing fuels.