Yes, it is the original four barrel. The engine was rebuilt and I have been told to take it easy for awhile to break it in. I was told the valves may need to be adjusted at some point after I drive her for awhile.
There are 2 engine break-in's to be done on that engine. Initial one should be done by the engineer builder. The 2nd break-in is required for the the first 1000 miles. You need to start with new oil + additives and oil filter. You need to drive the car for 1000 miles varying the rpm's as you drive. Make sure the engine is tuned properly (carb setup, timing etc.). You don't want to drive it as a race car for the 1st 1000 miles but you don't want to be a pussy with it or things will not seat properly.
What code do you have for your rear end? Did you get the PHS docs? It looks like your build sheet has it as a ZF (3.23) which will be good.
Engine Test Stand Playlist: https://www.youtube.com/playlist?list=PLwoxyUwptUcdqEb-o2ArqyiUaHW0G_C88 restoring my 1968 Firebird 400 HO convertible (Firedawg) 1965 Pontiac Catalina Safari Wagon 389 TriPower (Catwagon) 1999 JD AWS LX Lawn tractor 17hp (my daily driver) 2006 Sequoia 2017 Murano (wife's car) 202? Electric car 203? 68 Firebird /w electric engine 2007 Bayliner 175 runabout /w 3.0L Mercuiser__________________________________________________________
