Re: flywheel question 5.7 bad teeth...new one or just the ring gear
as merc nor volvo offered the ring gear your going to have to match it up for diameter,tooth count and tooth pitch, theye made a bunch over the years.
however its not hard, last 7.4 flywheel I priced was almost 500 dollars and I think the correct ring gear at napa was about 30 dollars, you do the math.