Ok, my 400 turned out to be a 406.
I tore it down to replace the gaskets because they leaked quite a bit, and I wanted to pretty it up a bit with some shiny parts. Got the history on the engine from the guy who built it in the mid 90s. The oil was so sludgy that I decided to look at the bearings and although they seemed decent we all know if you're that deep into it, then it's time to replace and rebuild it (unless you like taking things back apart just for fun)
. I had bought a Comp Cams S12-238-2 Xtreme Energy 262H Hydraulic Flat tappet cam to use with the stock heads because I was told years ago by someone here that it was a good way to go. My question is, Has anyone used the NKB 200cc Aluminum heads? Would these heads wake it up some more, or make it worse if the cam is too small for the heads? 68cc str, plug w/200cc runners, 202/160 stainless valves. I'm not looking to turn it up much beyond 5000rpms. or set the road on fire and transport through time either, but would like it to be responsive and still decent to drive while still getting decent mileage
if possible. The engine has an rv cam in it now, and this one I think is just a bit bigger than that. I am planning on using the Saginaw 4 spd with it, but have looked at the 200r4 from Monster trans. also (Shifting is for young guys)Plus I might want both hands on the wheel!!. I will eventually upgrade to 5 lug 15 or 16 inch tires, but for now I will have to stick with 13's. Not sure of my gear ratio yet. What do you guys think?