JE Pistons® - 502 Nitrous Series Gas Ported Dome Pistons

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$937.23
Manufactured - Ships in 2 to 3 weeks
1976 GMC Suburban
Fits Following Model(s):
  • C15 Suburban / C25 Suburban / K25 Suburban 7.4L Big Block
Notes:
  • Ring package designed for: 0.043" BACKCUT, 1/16", 3/16" Rings
  • Standard Bore: 4.466".
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    Product Details

    Universal performance parts brand accessories

    GMC C15 Suburban / C25 Suburban / K25 Suburban 7.4L Big Block 1976, 502 Nitrous Series Gas Ported Dome Pistons by JE Pistons®. 23deg Inverted Dome. Ultra-Light Gas Ported. Set of 8. These Nitrous Series pistons are similar to the above series, vertical and lateral gas ports have been incorporated to optimize top ring seal and reduce friction. Ring grooves are machined to accept our series J860 "HNS" Hardened Nitrous Series rings with 0.043 back-cut top ring, 1/16 taper face second ring and 3/16 oil ring. Compression height figured using 9.800" deck height with zero deck clearance. Fits most open chamber cylinder heads. Part Number 258199 is designed for a decked block. When the first Big Block Chevy made it’s debut in 1963 at the Daytona 500, it was referred to as the "mystery motor". Now, over 40 years later, it has been used in so many different applications that it would be impossible to list them all. Described below are some of the most common characteristics of the big block Chevy, in order to help you to arrive at the proper piston selection.To determine piston compatibility most big block Chevrolet cylinder heads can be divided into two categories, closed chamber and open chamber. The closed chamber head was originally used on the 396 and 427 engines and has a restricted combustion chamber area. All JE flat top and inverted dome pistons will work with most closed chamber heads. JE has a selection of closed chamber domed pistons available as shelf stock. The open chamber style head was introduced on the LS6 and LS7 454 engines and features an average combustion chamber size of 118cc. All JE Big Block Chevy dome shelf pistons may be used with most open chamber cylinder heads. Exceptions are Edelbrock cylinder head numbers #6040, #6045 and #6055, all of which require custom pistons. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a hassle free installation, this reliable product can help you get you vehicle back on the road faster and easier.

    Notes:

    • Ring package designed for: 0.043" BACKCUT, 1/16", 3/16" Rings
    • Standard Bore: 4.466".
    JE Pistons - Tech TipsJE Pistons - FAQ

    Features:

    • Vertical and Lateral gas ports
    • Contact reduction grooves

    Includes:

    • Pin #990-2930-18-51S (174g)
    • Double spiro locks (#990-042-CS)

    With over 60 years of experience, JE Pistons is the leader in high performance forged pistons. We've built a reputation that the competition can only follow. JE has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance enthusiasts trust and rely on.The top engine builders in NASCAR, ALMS, NHRA, AMA Supercross and others choose JE Pistons over any other brand. For over 60 years, JE's position at the forefront of performance piston manufacturing has been a result of continuous research and development of unique materials, piston designs and technologies. Utilizing State-Of-The-Art CNC machines for manufacturing along with purpose-designed forgings, JE is able to maintain exacting specifications on each and every piston and hold tolerances to millionths of an inch. Also available from JE is industry-leading processes like Ultra Crown, a Digital Three Dimensional piston crown machining process and Finite Element Analysis (FEA). FEA is a computer process whereby stress and fatigue are tested on a computer model before it goes into production. JE is the only performance piston manufacturer to earn the ISO 9001:2008 quality standard which confirms that JE provides customers the highest standards in quality control. In addition, we also have State-Of-The-Art inspection equipment and testing equipment which enables us to constantly bring you, the customer, the very latest in piston design configurations

    With over 60 years of experience, JE Pistons® is the leader in high performance forged pistons. We've built a reputation that the competition can only follow. JE has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance enthusiasts trust and rely on.The top engine builders in NASCAR, ALMS, NHRA, AMA Supercross and others choose JE Pistons over any other brand. For over 60 years, JE's position at the forefront of performance piston manufacturing has been a result of continuous research and development of unique materials, piston designs and technologies. Utilizing State-Of-The-Art CNC machines for manufacturing along with purpose-designed forgings, JE is able to maintain exacting specifications on each and every piston and hold tolerances to millionths of an inch. Also available from JE is industry-leading processes like Ultra Crown, a Digital Three Dimensional piston crown machining process and Finite Element Analysis (FEA). FEA is a computer process whereby stress and fatigue are tested on a computer model before it goes into production. JE is the only performance piston manufacturer to earn the ISO 9001:2008 quality standard which confirms that JE provides customers the highest standards in quality control. In addition, we also have State-Of-The-Art inspection equipment and testing equipment which enables us to constantly bring you, the customer, the very latest in piston design configurations

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