[2cnd chance]

Originally Posted by Bhobbs

I get that the LT1 is pretty close to the LS7 in some ways but if the LTx was upped to 7.0 liters, the advantages would be compounded with the added displacement. When the Z06 was revealed, I read an interview and Tadge Juchter said they were developing a new 7.0 liter but couldn't meet the new emissions regulations.

"tadgejuechter
Our original intent was to do an NA engine, we were unable to achieve all of our performance, durability, and regulatory (emissions) goals with NA. We weren't even close. You couldn't just do DI, VVT, no cylinder deactivation, 7.0 liter motor with the increase we would have wanted. New regs could have led to a horsepower decrease."

I still say calling this Z06 the Z06 was a mistake. It should have been the ZR1 for this generation.

There are rumors of a ZR1 with turbo(s) and very high HP.