[Cliff R]

Not giving advice or telling anyone what to do here, just educating folks.

We don't get much feedback on this sort of thing because these vehicles don't get a lot of miles put on them. Recently had another customer have problems with a double roller set, the higher end Rollmaster with billet sprockets, seamless chain, etc. It got loose enough the engine was noticeably down on power and making noise.

The "low" end roller chain in your pick is bottom of the barrel for that sort of thing, cast iron sprockets, etc. Even one of those should make it quite a ways in one of these engines. Even with that said I personally believe that the roller varieties start "slapping" around when they get loose and go out quicker at that point.

My own engines get factory 3/4" wide Morse type sets. I use and prefer earlier designs with the heat treated gears as shown in the picks but they are difficult to obtain these days. The most common variety currently available is from Melling shown in the second pick. I have some of those out there well over 15 years now with zero issues, but as mentioned you don't get reliable feedback in this areas as some folks are lucky to put 1000 miles on one of these cars in ten years so no matter what they used is probably still working even if it is stretched out some.

There are also performance advantages to factory link belt sets like constant tooth contact and smoother spark from the distributor, plus they are incredibly strong by design and why the factory used them for decades over any roller varieties. I know that is true because I've followed every engine built here on the dyno with a timing light for the first pull or two and any of them with double roller chains in them had the timing "bouncing" around some vs smooth with the link belt sets..........FWIW......