Hummer headers won't fit a pickup body without a lot of cutting and welding. Big block headers look close, but I'm not buying a set to see how close. I have the open-plane J-code intake manifold waiting to go on, it's just like the military manifold.
The old EPA numbers for a "crawler" 4-spd 6.2L 4WD are 16 city/18 hwy. The overdrive auto is worth 3 MPG on the highway. The 350 gas with the "crawler" 4-spd is 10/15.
From what I hear, the main problem with WVO in the Stanadyne IP is pushing hot WVO into a cold pump. It cools down as soon as it enters the cold pump, and the input shaft snaps.
Many people recommend heating the diesel to get the pump hot. I'll consider electric heat if I can't get the coolant temp where I want it. And of course clean, dry oil is important. I've been researching WVO in the 6.2L for years. I was going to convert the other truck, but never got around to it. I have all the parts.
