I ordered a set of Mahle 0.20 with 9:1 compression for a 4.2 from SNG. They sent me the wrong everything, but rectified it immediately. However, they screwed up once, so I need to confirm these are the right pistons and they’re not sure because their records said they sent me the right parts the first time. Can anyone confirm these are 9:1 and for a 1965 4.2? The pistons say they’re 0.20, so at least that’s right. I don’t know how to interpret the information from the Mahle site. I would compare them to the old pistons, but they’re at the machine shop 40 minutes away.
