APPLICATIONS

• 1997-current Grand Prix GTP
• 1997-current Regal GS
• 1998-current Bonneville SSEi
• 1997-current Grand Prix GT
• 2000-current Monte Carlo SS
• 2000-current Impala LS

Since 1968 Diamond Pistons has become one of the most highly regarded A-1 quality manufacturers of aftermarket race pistons. We are proud to carry a variety of choices for your 3800 Series II motor. These pistons are explicitly designed to adapt to various high performance engine modifications and are a big investment.Diamond has stood the test of time and endurance and is the choice engine builders prefer.

TECHNICAL ASPECTS TO CONSIDER
As everyone knows, there are a wide variety of options out there to improve overall performance / horsepower. The simple fact is … you’ve got to have a solid base to build upon. In this case, it’s your engine.

If you make modifications to your engine such as; increasing boost pressure, advancing ignition timing, etc; it’s important to understand that your stock pistons are taking a lot more abuse and can only take the abuse for so long before you’re engine starts to “feel the heat” and breaks under the pressure. That’s why THRASHER recommends and offers Diamond Forged Pistons.

Diamond Racing has developed their Forged Pistons to address the potential stress points and eliminate piston failure. What puts Diamond Pistons out in front? They use a forged process, (compressing the aluminum alloy) when creating their pistons. This in turn produces a much stronger metal. Not only that, but they use a 2618 aluminum alloy which is much stronger than stock and can handle the larger amounts of boost and ignition timing with very minimal expansion. And to top it off, Diamond gives you a thicker, stronger piston top by moving the first ring groove farther down on the piston.