DynoCams Camshaft - 315 Grind

This cam is recommended for Shredder Level II heads with smaller displacement engines like the Predator 212cc. This version is for the Predator 212 hemi, 224 non-hemi, and GX200/Clones/Ducar 196, 212, and 224.

Description

• The 315 lobe design is the next step above our proven 308. With slightly more lift and increased duration, the 315 will make more top end power for an OHV modified engine. This cam requires an upgraded spring package, billet rod, and billet flywheel.

• The lobes on this cam are welded for extra durability.

It is highly recommended that you use new lifters when installing a new flat tappet camshaft. The lobes have a specific wear pattern on the lifters that is established at break-in when you first start the engine after installing your new flat tappet camshaft.

Break-in should be a 20 minute idle at or above 1800rpms followed by an oil change. This break-in practice is to establish the circular wear pattern on each lobe and after that the lifters should always stay with the lobe that they break-in with. That means no swapping intake and exhaust lifters if you take the cam and lifters out of the engine later.

It is not recommended that you reuse lifters on flat tappet cam engines, especially with higher spring pressures due to this wear pattern being established! You can see the pattern on the bottom of the lifter and it should appear as a circular pattern, showing that the lifter is spinning. If your lifter is not spinning it is because the surface of the lifter is incorrect or the taper on the cam lobe is incorrect. Please do a web search on this, I am not just trying to get you to spend more money, it is an established practice with flat tappet cams in the automotive world.

Also, with all flat tappet cams using higher than stock industrial engine spec spring pressures you need to use a high zinc/phosphorus oil, NOT a "clean" oil designed for roller cams in modern fuel injected automotive engines such as a DEXOS compliant Mobil 1 or other EPA compliant oil. You should be using a "hotrod" oil that uses a robust ZDDP additive package that will protect the cam lobe and lifter surfaces under high pressure from high rate valve springs at elevated engine speeds.

The easiest of these oils to get is Valvoline VR1 in either the SAE 30 weight or 10w-30 if starting the engine below freezing temperatures. Your local Walmart carries this oil.

Considerations for maximum cam lobe life:

*Hardened lobe with either a welded and ground lobe face or billet steel

*Cam lobe taper

*Lifter face shape

*Cam break-in procedure