Hi Willy.

I put McHenry's piston rings into my '52 216. The beveled ring went into the upper groove with the bevel facing up. The square ring went into the second or middle groove.

McHenry's second ring was not entirely square. It had a very small notch taken from the bottom of the ring that faced downwards. Maybe have a close look at your rings to see if your square rings are truly square, or if they are notched.

1952 Canadian GMC Pickup Truck

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