Probe Industries has new forged pistons and stroker kits for big block Chevys. They say that these pistons are far stronger than hypereutectic-cast pistons and are  nitrous- and boost-approved making them perfect for drag racing.

Official Release:

New Chevy 496ci Dome Top +18.0cc – FPS Pistons and Stroker Kits for Chevy Big Blocks!

In our ongoing commitment in offering higher-quality, low-cost forged pistons, we now introduce our P4963F FPS Forged Piston for Chevy’s.

FEATURES:

• 4.250″ Stroke

• 6.385″ Rod Length

• 1.270 C/H

• Increased valve clearance (up to .650 out of the box)

• Tight piston to wall clearance

• Reduced piston weight

• Reinforced skirts.

• Far strong

er than hypereutectic-cast pistons

• Nitrous- and Boost-Approved

The 496 FPS P4963F pistons and Engine Kits are offered in a Dome Top Design with a +18.0cc volume and available in multiple bore sizes and awesome for high-compression and Nitrous applications.

Chevy 496 FPS Dome Top Engine Kits – Probe and SCAT Based available NOW!

Chevy 496 Dome Top +18.0cc – FPS Piston Set

• Part Number: P4963F
• 1.270″ Compression Height
• 4.250″ Stroke
• 6.385″ Rod Length
• 0.990″ Pin OD
• 5/64 in. 5/64 in. 3/16 in. Rings
• Available Bore Sizes: 4.280″, 4.310″, 4.320″

Chevy 496 Dome Top +18.0cc – GT Engine Kit, 4.250″ Stroke

• Part Number: P4963F-GT-C496
• 1.270″ Compression Height
• 4.250″ Stroke
• 6.385″ Rod Length
• Probe FPS Pistons
• Cast Steel Crankshaft
• Machined Beam (Bushed) Rods
• Available Bore Sizes: 4.280″, 4.310″, 0.000″

Chevy 496 Dome Top +18.0cc – SCAT-BASED Engine Kit, 4.250″ Stroke

• Part Number: P4963F-SCA-01-C496
• 1.270″ Compression Height
• 4.250″ Stroke
• 6.385″ Rod Length
• Probe FPS Pistons
• SCAT Cast Steel Crankshaft
• SCAT I-beam Rods
• Available Bore Sizes: 4.280″, 4.310″