Thinking about the single row timing chain on VVT Hemi's , to my knowlage there is no upgrade available .
So i looked into what the LS crowd have, because all LS engines use a single row chain from the factory .

The best available to them in single row chains are the C5-R roller chains which have been proven in endurance racing, these can be used with stock or aftermarket sprokets, there is also a slightly better seamless roller chain available called C7-R , two of the vendors that sell the genuine thing are Kaytech and Hinson Motorsports .

So does an LS chain have the same pitch as a hemi , I should have just asked this question before typing all the above.