[L16pilot]

The only engine available from 70-72 in the Z-28 was the LT-1...although it was never referred to as such. In the Camaro, it was always referred to as the Special High Performance 350..or as the Special (SPL) Engine on build sheets. Internally, it was the same as the Corvette LT-1, but de-rated 10hp in 1970 for the Camaro. Not sure if that was Chevy's way to keep the Corvette on top or if the differences in air cleaner assembly, manifolds and exhaust resulted in the HP loss. I believe for 71 and 72, the Camaro and Corvette "LT-1s" carried the same HP ratings.
Regardless, in 71 and 72, the LT-1s were still stuffed full of all the good stuff....4-bolt mains, sold cam, steel crank, pink rods, 2.02/1.60 heads with screw-in studs, windage tray oil pan, aluminum intake and 7890 Holley carb....just bump the compression up and you're basically back to 1970 specs!