J-Rooster wrote:
Your correct the EPA stopped Chevy from from making engines in 2009. Likewise the EPA stopped CAT from making diesel engines. I smell a rat at the EPA!
The EPA didn't stop anyone from making engines, diesel or gas. Cat made a business decision to not make the changes to meet the newest emission limits for on-highway vehicles as they decided the cost to do so was not worth it for the 2-3% of their business that it represented at that point in time. Cat's main engine business has always be off-road equipment and engines. Cat also decided to stop making agricultural equipment as well for similar reasons even though that is where the business began back in the 1920's. They sold the AG division to a foreign competitor.
GM made a similar decision with the 8.1 as they the market for the larger block had shrunk to the point that incurring the expense of upgrading to the newer EPA on-highway regs was just not worth it.
I liked both engines, but there wasn't enough of "me's" to justify the continuation of these engines in the on-highway realm.
So I upgraded my coach to the '06 Duramax!