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There is no adapters that I'm aware of to go from the tdi to chevy auto. Gas engine convertor should work just fine. So far in my experience working with the tdi higher hp gets better mileage than stock power. Then again when I go for more power I mod the pumps and that helps a lot with power...

Cc's is the same as mm when measuring fuel delivery out of a pump

I'm just going to insert this for comparison. My brother and i built a db2 with the .29 plungers that did 120cc's and mantained that to 4500 rpm.

No issues other than more timing at idle. Makes a turbo spool a little later but definitely makes more power. This is assuming you have big fuel Iinlet on the pump and big fuel line for max flow. Having fuel pressure is different from having pressure and flow .

I would drive it and then see how it acts. Sometimes you don't get all the air out until you go for a drive and get itto full throttle and get some rpms to it. I would be checking lift pump pressure to see what it is doing. The Cummins lift pumps can do 20-25 if I remember correctly. They are...

Since the op has a db2 this is what I am talking about. I've pushed over 30 psi to them already with no issue except it advanced timing. I have a customer with a db2 that runs between 20-25 all the time and he has no issue at all yet.

If he has had to advance timing to get it to run better higher fuel pressure is not advancing timing. I've ran 25 psi on these pumps with no problem. Between 25-30psi does advance timing somewhat.

If the builder used offbrand head and rotor they don't always seal up,even when new.

Pistons and crank are about the only things that can't be interchanged.

Why go lighter? We've ran 4500 rpm with no issue. The 6.5 has the lightest piston and rod combo for a diesel of it's size.

I have yet to see solid evidence that one block is stronger than the rest. Except for the p400 and amg blocks. You will be just fine with a 506 block.

Yeah

This winter we plan to put a turbo on so I'll get to see how it responds to pressure.

That could very well be. He didn't tell me anymore than he absolutely had too. Lol

I don't remember the specs but it was their smallest cam, he called it an rv or torque grind. I was very impressed with it. Totally brought the bottom end in much better and it pulls hard right out against the governor. It was a big difference from stock to this cam.

Delta cam, factory exhaust manifolds without the flapper in the left side manifold. Stock bottom end, 82 heads with small precups. On wet roads the tires don't even begin to try to hold.

Mild port job, valve work, cam, and and a few injector and pump tweaks. 3 in. Exhaust. .29 plunger pump with the screw turned almost all the way and it has just a slight haze of smoke. Runs very nicely. Running the piss out of it pulling a trailer we get 15mpg and beating around town it gets...

We have ran 4500 rpm with no issue. Right now we have a n/a engine that will easily outrun a stock 6.5 turbo

Sounds like messed up injectors ...

Hx-40II is very different from a genuine Holset Hx-40. Please do not compare the 2.