I've got a 55 block and the rocker assembly that was on it originally. So by your message everything should be OK.
Why doesn't the head have anyhting to do with it? The 261 had the ball vavle rotators. Did the 848 heads use the rotators? Important question to me is if the installed height of the vavle stem is the same. If I understand you, the installed height is the same for all of them, but the oiling system is different. Is that correct. Thanks for the answer. joe
