Hi guys, I dont post here much but want to take a couple minutes to reach out for some help. I have put 300 miles on a rebuilt 302, and a few things have popped up that are now confusing me. These are grey smoke on throttle, and now a valvetrain question as well. This may be a long winded post, but want to get all the information out there.

So, to start off, the engine is in a project 66 mustang that I purchased a couple years ago and just got driving about a month ago. I was told by the...

First 300 Miles on Rebuilt Roller 302