Wiseco 6495B6 Professional Series Quick 8 BBC Forged Piston 4.560 in. Bore Gas Ported Solid Dome

The Wiseco 6495B6 is a Professional Series Quick 8 forged racing piston engineered for serious big block Chevy race builds. Forged from 2618 aluminum alloy, this individual/replacement piston features an 18-degree solid dome (+15.6cc) designed to work with 18-degree cylinder head configurations and promote efficient flame travel during the combustion cycle. Gas porting and a strutted skirt forging make this a true competition-ready piston right out of the box.

Key Specifications:

• Bore: 4.560 in.
• Compression Height: 1.215 in.
• Dome: 18-degree solid dome, +15.6cc
• Deck Height: Fits 9.750 in. deck
• Pin: Includes tool-steel wrist pin S462 (0.990 in. diameter)
• Alloy: 2618 forged aluminum
• Skirt: Strutted forging design to resist cracking
• Gas Ported: Vertical gas ports drilled through the top of the piston to the upper ring land for maximum ring seal
• Application: Naturally aspirated (N/A) or nitrous compatible
• Recommended Ring Set: W77008-4560-5 (sold separately)
• Sold as: Individual/single replacement piston

Quick 8 Series Technology:

• Gas Porting: Vertical gas ports allow combustion pressure behind the top ring, pressing it firmly against the cylinder wall for superior sealing and enabling the use of a lightweight 0.043 in. ring package that reduces friction.
• ArmorGlide Skirt Coating: Wiseco's proprietary anti-friction coating minimizes piston-to-wall friction, improves wear resistance, and allows tighter bore fitment for reduced piston rock and improved ring seal.
• Tool-Steel Wrist Pin: 0.180 in. wall thickness limits flex under extreme loads for maximum power potential.
• Strutted Skirt Forging: Prevents the cracking common in slab or full-round forgings under high-horsepower race conditions.
• Precision Ring Grooves: Machined to exacting tolerances for optimal ring seal, minimized blow-by, and reduced oil consumption.
• Valve Pocket Design: Allows maximum flow around the valve and accommodates oversized valves and high-lift camshafts.
• ISO-Certified Forging Facility: Complex forged shapes with advanced materials and feature-aligned grain flow technology manufactured in the USA.

The Quick 8 series was developed in partnership with top race engine builders to deliver a shelf piston for large-bore big block applications that is fully race-ready with gas ports, anti-friction coating, tool-steel pins, and strutted forgings included as standard. Rings are sold separately; recommended ring set is W77008-4560-5. Wrist pin S462 is included.