Quote:

I read the 6.4 blocks have better cooling and bigger bore capabilitys than the 6.1 blocks, is this true? if so why not run the 6.4 block even though they are vvt?



A.C. Nutter has come up with a solution for us hot rodders that want to use a pre-vvt cam in a vvt block. Gets rid of it and also uses a different timing chain from what I understand.
http://www.nutterracingengines.com/