Build Your High Performance Engine Right with Howards Cams ProMax 2618 Race Pistons

When you consider the extreme environment in an engine’s cylinders, it stands to reason that installing a high lift cam, larger valves, a bigger carb, or even forced induction puts the pistons under even more strain. Add in some trips on the tach of 6,000 RPM or more and you’re flirting with disaster. 

That’s why Howards Cams created ProMax 2618 Race Pistons. The “2618” refers to the 2618-T61 series of heat-treated aluminum billet bar stock the pistons are forged from; it contains less than one percent silicon particulate, giving the pistons the strength to keep their shape and size under extreme pressures and high RPMs. Using the 2618 material also allowed Howards Cams to eliminate “skirt shrinking”—the annoying sound of piston slap that rears its ugly head at startup and goes away when the engine reaches operating temperature. Moreover, the shape of the CNC-turned skirts can handle severe side loads without scuffing or splitting the cylinder walls. 

Other features include:

• Fully CNC-machined
• Accumulator grooves for improved ring seal
• Piston domes (where applicable) are fully radiused to eliminate sharp edges and potential hot spots
• Valve pockets are precisely designed to accommodate large cam profiles and oversized valves
• Machined oil drainback holes
• Forced pin oilers
• Lock removal indents
• Lightweight .150" aircraft-quality wrist pins with double Spirolox® retainers

The ProMax 2618 Race Pistons are available for small and big block Chevy, GM LS, and small block Ford engines. 

SEE HOWARDS CAMS PROMAX 2618 RACE PISTONS AT SUMMIT RACING