Timing Chain

Cloyes had both. The True roller was a premium set with stronger chain links and hardened billet sprockets if I remember correctly.
Cloyes may have had one of the original "true roller" timing chains in part # 9-3103 for Mopar small blocks. I've used them almost exclusively for decades & I believe they were sold under the Direct Connection/Mopar Performance label as well. I believe they have discontinued the old number and now have a true roller with a billet upper sprocket. (The Summit "true roller" looks suspiciously like the original Cloyes!) Milodon makes a good timing chain too.

Besides their different "levels" of timing chains, a cool option with the Cloyes true rollers is that they had and still have sets that are .005" & .010" shorter to compensate for line boring which can move the crank & cam centerlines closer together. Otherwise you can end up with a loose chain. Replacement chain-only are also available.