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Part number: K398X3903
Competitor Pricing
Product Details
Wiseco Pistons K398X3903 in our Pistons Department
Products specifications
Bore 3.903
Comp Height 1.304
Comp Ratio @ 65CC 10.6:1
Comp Ratio @ 67CC 10.4:1
Comp Ratio @ 68CC 10.2:1
Comp Ratio @ 70CC 10:1
Dome Volume -3.2
Gram Weight 423
Rod 6.098 / 6.125
Stroke 3.622
Wiseco Pistons K398X3903 2618 Alloy Forged Pistons
Nitrous/Turbo Applications
Fits 3.622 Stroke
Set of 8 Pistons
Recommended RingSet: 3905GFX
Rings Included
Includes Pins: S643

World renowned for their work building race winning pistons, Wiseco utilizes experience from a diverse background of the most sophisticated engines in such venues as Formula 1, Indy Racing League (IRL), NHRA Pro Stock, Moto GP, AMA Superbike, AMA Motocross and Supercross to design and manufacture the highest technology pistons available.

Features

  • Valve Pocket designs that allow maximum flow around valve, also allowing oversized valves and high lift cams to be utilized.
  • 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!
  • Piston Domes designed for optimal quench during the compression/ combustion cycle, resulting in resistance to detonation and preignition.
    The end result is longer engine life and increased horsepower potential.
  • Precision machined ring grooves with proper orifice/accumulator volume feature calculated groove root diameters and axial widths, providing
    excellent surface finish and flatness, maximum ring seal and minimized blow-by and oil consumption.
  • World class, ISO Certified, forging facility that utilizes the latest technologies ? Featuring complex forged shapes, advanced materials, and feature-aligned grain flow technology.
  • Complex Piston skirt profiles that reduce power robbing friction, yet promote stability in the bore for optimum ring seal.

ArmorGlide Skirt Coating
Wiseco?s new ArmorGlide skirt coating is the result of testing, development, and benchmarking through our in-house dyno program. The outcome ? minimized friction, maximum horsepower, and improved wear resistance.

Not only is ArmorGlide a high-tech lubricant that reduces friction, but it also allows the piston to be fitted tighter within the bore than a non-coated piston. Better ring seal reduces noise from piston rock. ArmorGlide is being applied to selected pistons.

Reviews
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F
I had a great experience shopping at autoplicity
2
Great price found for my product. excellent customer service and my item was in stock.
J
Ordering was very easy and product was delivered within a week. I ordered a battery and it was received in good condition and works. I would recommend autoplicity to others.
B
This is our second order from Autoplicity. The first one didn't go so well due to a mix up with the Sparco seat pricing. Though I was starting to question our decision to order from them after several emails and phone calls and online chats, they came through in the end. These guys earned our second order by honoring the price they had listed and then calling to follow up when our race seat was shipped. Since this group was able turn our bad experience into a positive one we made our second order and, so far, it looks like they are again getting us what we want at the best price we can find. We are happy to recommend Autoplicty and plan on using them for future orders. There is one specific thing we would recommend, change the quality and volume of the hold music on the 800 #. It sounded like we were calling a 1970's van with a blown Jensen stereo turned all the way up,...
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Fitment
Chevrolet Camaro
2002 Chevrolet Camaro SS / Z28
2001 Chevrolet Camaro SS / Z28
2000 Chevrolet Camaro SS / Z28
1999 Chevrolet Camaro SS / Z28
1998 Chevrolet Camaro SS / Z28
Chevrolet Corvette
2004 Chevrolet Corvette Base
2003 Chevrolet Corvette Base
2002 Chevrolet Corvette Base
2001 Chevrolet Corvette Base
2000 Chevrolet Corvette Base
1999 Chevrolet Corvette Base
1998 Chevrolet Corvette Base
1997 Chevrolet Corvette Base
Pontiac Firebird
2002 Pontiac Firebird Formula
2001 Pontiac Firebird Formula
2000 Pontiac Firebird Formula
1999 Pontiac Firebird Formula
1998 Pontiac Firebird Formula
Pontiac GTO
2004 Pontiac GTO ALL / Base
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