1980 390 WR Chain Size

Can someone kindly provide me the size and length (number of links) for a 1980 390 WR? Looks like a DID X chain is the best option from what I have read on the forum.

Thanks.

It is a 520 chain. 5/8 inch pitch and 2/8 inch thick sprockets. I usually get a 120 link box and cut as needed. Really need to specify the sprockets used to answer properly. That is the best I can do. The box will come with a clip type master link, a rivet on one is available.

Like Fran says. 520 chain, 1/4 x 5/8, you will have to cut to the required length, if you do not have a chain breaker you can grind the rivets down and punch them out .

Use an online chain length calculator. Link below is an example (see bottom of page):

https://www.rbracing-rsr.com/chainlength.html

Thanks guys. Most appreciated.