Wiseco 8.3:1 Forged Pistons for 7-Bolt: DSM

Wiseco has been making top-quality forged pistons for decades. Made from 2618T-61 aluminum alloy, Wiseco's advanced forging process and extensive heat-treating and finishing processes ensure the performance and reliability you demand from your engine.

Their crown thickness and ring lands are designed for power adders like turbos, and nitrous oxide. Piston crown shapes designed to promote maximum intake charge efficiency through scavenging mixture "cross flow" during intake and exhaust valve overlap. More fuel and air equals more horsepower! Pistons designed to optimize squish or quench during compression combustion cycle event, resulting in resistance to detonation and pre-ignition. The end product is longer engine life and increased horsepower potential. Precision machined ring grooves with proper orifice/accumulator volume using calculated groove root diameters and axial widths, featuring excellent surface finish and flatness providing maximum ring seal and minimizes blow-by and oil consumption.

Armour Plating (AP) is available as an option.  This is a super-smooth protective coating applied to the dome and ring grooves.  On the piston dome, it defends against detonation and on the ring grooves, it eliminates micro welding (adhesion of minute particles of aluminum (from the ring groove) to the bottom surface of the ring).

Pistons come complete with rings and wrist pins.

Specifications:
Pin: .866"/22mm
Rod Length: 5.905"/150mm
Stroke: 3.465"/88mm
Comp. Height: 1.378"/35mm
Head (cc): 47.0
Dish Volume (cc): -17.0
Compression Ratio: 8.3:1
Weight:
std bore: 327g
.02 o/s: 336g
.04 o/s: 342g

NOTE: We don't always keep these in stock, so ordering them could delay shipment of your order. Contact us for details.

Application: 7-bolt 4G63

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