CHOOSE YOUR CYLINDER HEAD TYPE:
OPEN CHAMBER
BBC Lightweight FSR GP
Big Block Flat Top
Big Block Flat Top - Tall Deck
Big Block Inverted Dome
Big Block Inverted Dome - Tall Deck
B/B Open Chamber Dome
B/B Nitrous Series Dome
Nitrous Series GP
Open Chamber Dome GP (Gas Ported)
427 APBA Dome
B/B Blown Alcohol Dome
CLOSED CHAMBER
396, 427, 454 Closed Chamber
12º-14º SPREAD PORT
632 Flat Top
632 Nitrous Flat Top
BIG DUKE / BIG CHIEF / BIG VICTOR 18º
Big Duke / Big Chief / BIG VICTOR GP 18º
Pro Mod Style GP 18º
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.

Other cylinder heads, such as those with the popular 18º valve angles, require special order pistons unless a specific catalog piston has been designed for them. REMEMBER, always check piston to cylinder head ...

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