- Engines & Components
- Piston
- Speed-Pro Powerforged Pontiac Pistons
Speed-Pro developed powerforged pistons and set the pace in powerforged technology. The high silicon VMS-75 alloy is found exclusively in pistons "powerforged" by Speed-Pro. Up to 3,000 tons of force forges aluminum slugs into the basic piston form which creates a grain flow pattern in the structure providing excellent strength, ductility and improved heat dissipation.
Please Note: All compression ratios are figured with a gasket thickness representative of those commonly used and are approximate.
Pontiac Performance Pistons
What Are Speed-Pro Powerforged Pontiac Pistons Common Pros and Cons?
Speed-Pro Powerforged Pontiac pistons utilize a high-silicon VMS-75 alloy with aluminum, which is forged to create very strong pistons capable of handling high-horsepower applications. This includes supercharged, turbocharged, and nitrous engines. As forging is a more expensive process, Speed-Pro Powerforged pistons cost more than stock-style and hypereutectic options.
Which Speed-Pro Powerforged Pontiac Pistons Are Best?
The best Speed-Pro Powerforged pistons (for example, Pontiac 400 forged pistons) depends on the engine application, as clearance and compression needs will be different from engine to engine as well as bore size. However, the most popular pistons are the Pontiac 400 pistons with 4.150" bore (+.030"). The next most sought after piston kit is the Pontiac 400 pistons with 4.180" bore (+.060") . Rounding out the top three most purchased Speed-Pro Powerforged Pontiac Pistons is the Pontiac 400 pistons with 4.160" bore (+.040").
How Much Do Speed-Pro Powerforged Pontiac Pistons Cost?
Speed-Pro Powerforged Pontiac pistons start at around $400 per set and reach to approximately $725 depending on the application and sizing.