... you make it sound so EASY
How about the fuel lines and pump? Remember, this is an 85....
And, I bet he doesn't have a donor vehicle...
If the Howell system is run, it will be a bunch easier to do the install.
BTW, do the TBI engines have a knock sensor?
I don't think you will be able to get 200 RWHP out of an NA 3.4.
Mine has a crazy cam, roller rockers, headers, crazy exhaust, 4 barrel intake and Mallory dizzy. I think it may be pushing 175 - if I'm lucky. It runs high 14s at the 1320, and has a 4.10 rear gear with a 5 speed.
GM claims 160 HP (?) at the crank for the crate engine, which means about 125 RWHP.
Also, if the engine runs well, I would not rebuild it - unless you are going to run higher compression pistons, balance the rotating assembly and maybe port the heads.
Mine has almost 275K miles and still pulls like a freight train. It doesn't use any oil or have any leaks.
I would replace the rod bearings with Clevite 77s (probably not necessary) and the rear main seal. You can to do this when you change the oil pan anyway (4x4 is WAY different than the Camaro). I usually install a new high volume oil pump too. Felpro makes a one piece blue silicone oil pan gasket that is the shite.
I also run a Cloyes true roller double chain set ($$$) - but worth the expense. It outlasts the stocker by a stretch.
There are many cams you can source too. The low end cam will give you mileage and good low end power, but is not big on making large HP numbers.
has done this swap, he is a good source for info.
built a crazy hybrid 60* V6, he's another good source for info.