Got a quick question once I dissassembled my '76 225 for a rebuild and got her all cleaned up and noticed a strange gouge (?) in the #2 piston so should I be worried ? I checked the valves, non of them are chipped of gouged and spin freely with springs removed.

-Mike

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I am the Guardian, I hate helos, everything leaks.......

Looks to me like the manufacturer added that "feature" when the top of the new piston was machined.
I can hear the machinest now... "that wont hurt anything, it's good".
DD

That one spiral gouge is typical of worn out automatic machining mechanism that failed to retract cutter correctly after facing the top of piston.

Run it.

Cheers, Wizard

It will add swirl to the mixture in the chamber resulting in better mileage and more horsepower.

GM called it Vortec.

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Official Cookie and Mater Tormentor.

really zilla, WoW not lol, but how much deck is available on stock pistons ? Is it better to have glass smooth tops on the pistons or those "rings" that are machined ok to have ?

-Mike

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I am the Guardian, I hate helos, everything leaks.......

Actually the Vortec had the swirls cast into the intake runners.

I would not worry about marks in the piston tops as long as long as they are not too deep.

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Official Cookie and Mater Tormentor.

maybe try to get another piston if your worried about it?

I would.

there is a perfectly good explaination why it has that mark on the top:

aliens have visited your engine and are performing crop circles on the top of your pistons....

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Shazzam66

'Valerie' 1966 Chrysler Valiant VC with 3.7 litre 225 Slant 6 backed by A904 3 speed Torqueflite