In the pic. On the left hand side was tight. The right hand sided did have some slack it in. Mileage not sure to be honest. It was an old farm truck off ours.

 

Here’s a couple pics. Hard to tell but there is some slack

 

It looked a little slack on the driver side in the picture and why I thought I should mention it. After changing mine the chain was pretty tight both sides....

 

Time to change it..

 

Ok. Thanks John. I’ll look into a new one. Does it come as a set with gears. Or just chain?

 

Comes as a set, once you get the new one on you'll be pleased that you did it...lol I can't remember what it cost but wasn't too bad..

 

Yeah just doing a quick google search. Looks like couple hundred or less for new set

 

I didn't think it was that much, bought mine at an Auto Value . check Amazon.

 

Cruising Summit racing and now I’m more confusing. There’s some there for $80-$250. I have no idea what is what. 1 piece fuel pump, 2 piece fuel pumps.

 

Looks like you have the same mechanical pump I have , it just a stock motor isn't it..?

 

Yes. Stock 351w from a 84 f150.
found this on amazon. Plus a few edelbrock ones for a few bucks more. Not sure what i exactly need

 

That looks like the one I put on mine and the same that came off. Mine is from an 83 F150, sounds closer to what I paid now that I'm thinking about it, I know it wasn't as as expensive as I had imagined before going to buy one..

 

Is this one a single chain? The one on the engine right now has dual sprockets. This appears to be the same width but just a single sprocket. But if this one works the same it’s cheap insurance.

 

That one on Amazon I posted was a double chain, I'd replace with the same as you have now..

 

I didn’t even realize that was a link to a chain. Thanks.