Hi, I'm 351 Coupe I'm new to the site

351 Coupe · 11-04-2006

351 Coupe, just bought a 1973 Mustang with a 351w engine, need some work, very strong engine, the car was used for draging
so I need to change it from drag to street to dirve daily but still have a little muscle to kick some A$$ but first need to change over.
Do anyone know what gear ratio I need to change the rear end to be able to drive the car daily?

03svtsnakevert · 11-04-2006

3.55s are a good choice

blue65coupe · 11-04-2006

3.55 or 3.25, depends on how much hwy driving you're going to do. Measure the heighth of your tire and yahoo or google "rpm calculator" This will tell you approx what rpm/mph you'll run with different gears. Welcome to the site

03svtsnakevert · 11-05-2006

or you can go to:

www.richmondgear.com