The last time we visited the Large Marge ’73 Mustang coupe project, you saw the Holley cylinder heads getting new guides and seals from Jim Grubbs Motorsports, followed with some tips on installing ...

Another sign that it’s time to change your belt (or close to it) is when the grit itself begins to clog. You’ll notice spots or streaks on the belt where the material is fusing to the grit bed.