Well I've looked everywhere I can think of and can not find the reference. And in fact may be an assumption on my part. It is my rememberance that it dealt with a variance allowed by the ACO on the LS1 engine. In that the LS1 could be run at 427c.i. instead of the stock 365c.i. because it was capable of the larger displacement with factory parts. Also that the LS7R was reverse engineered to produce the LS7 for the C6-Z06 and appease the ACO variance. I know if I have made a mis-step in this process, you will be more than happy to point out the particular offense. On a different note: That link in AU N EGL's post on the Katech is pretty cool. A cool MILLION in LS7R engines layin around.
L.P.
