sheet metal intake...

That torch head is modded with a manual air switch (The wiffle golf ball!) as the original torch head would somehow trigger the air after the arc started and this one would not. So I strike the arc, then hit the air. I may step up the guage on the intake flanges but this old plasma is not very strong. I plan to tack most of it as I assemble it, and then run a few beads when its all bolted up so it doesnt pull away on my. Then itll come back off for final seam sealing and paint. 1X2 rectangle channel is almost perfect for a 273/318 intake port but use the thinnest guage you can get as the ID gets bigger as the guage gets smaller. This stuff I got as scrap is some thick wall stuff so the runner cross section is going to be SP2P like, very high in velocity but not real good for top end, but the turbocharger should help. It will be a standard single TB out the front like most TPI intakes with runners meeting in the middle. I may angle the runners so I can overlap them in the plenum like an STR intake. We'll see.