Recent content by 9Trac

I own a 2002 ST but this is about my 1971 Ford LTD convertible with a 400 cid and 2 bbl carb. For years I have been using 93 octane gas but with prices where they are I was wondering if it could tolerate 87 octane. I've never done anything to the valve seats. I guess I could go on and try it...