400 Non Stroker Build

About 20 years ago , I built a low buck 400 with 440 Ohio cast 72-78 replacement pistons. .060 over in a .040 over 400. About .010 in the hole IIRC. No valve reliefs , but plenty of room with the Comp XE268. Took a chance ( not smart) and didn't balance it either. No vibrations and it's still alive today. the forged Speedpro 2388s will work if you can find them cheap. Any of the low comp 440 pistons may be hard to find for a reasonable price in the required oversize due to the fact there is not much demand for them . There was a guy on Moparts that said he used the 2266s with an open chamber head and modified the pistons to clear the head and had valve reliefs cut. If your block will clean up at .010, Summit has the Silvolite low comp cast 440 piston in .030 over for cheap (at the moment). DODGE Silvolite Pistons 1276-030 Silv-O-Lite Cast Pistons | Summit Racing This is for educational purposes only. If'nitwereme, I would probably put a stroker kit in it.