These pistons, and the slip-fit flanged sleeves that work with them can be adapted to a 261 engine. The wrist pin hole can be bushed down to fit the 292 or 261 wrist pin
I have six of them, with sleeves, on hand, and a 261 block they're going into. It's also getting 3/8" extra stroke for around 300 cubic inches.

The same piston/sleeve setup can be fitted to a GMC 270 block, IMHO.

www.ebay.com/itm/195096233829?

Jerry

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