So my engine is toast and I have been looking around to pick up a used motor to get me back up and running.

I have found a 1994 non-turbo van that had a brand new GM motor put in in 2005 that has the right price.

The question is, what do I need to do to make the van motor work? From what I understand because it is a non turbo the heads will work with my turbo intake and I can bolt my turbo exhaust manifolds up. I can also put my new injectors in to replace what might be taller ones in the van motor.

The downside would be smaller precups from the n/a application. And having to plumb an oil feed and return. Correct?

Will the van be electronic pump? Can I use the injection pump?

Any other info would be greatly appreciated. Thanks for you time...

btt

Back to the top in the hopes that someone who doesn't frequently stop by will see the post and have some information.

I sounds to make like you have everything right. The van heads for turbo applications had the angled intake bolts, the naturally aspirated heads should have the straight bolts. It will likely have smaller precups like you stated, and plumbing the oil lines for the turbo won't be hard to do because you can use the oil lines off your current engine (just make sure you flush them out good.

The van should have an electric lift fuel and injection pump. You can use the injection pump as long as it isn't a 5068 pump. The only way to use a 5068 pump is if your current engine has a 5068 on it.

That 2005 engine might be a big score on your part, it may have been manufactured by GEP meaning it will have some of the updates in the block/heads. The best way to tell would be look at the date code on the back of the engine.

Thanks for confirming the information I have so far...

I go to pick up the van on Wednesday next week and then will start a thread to document the mess I am getting myself into...

The port for the oil supply for the turbo should be there with a plug in it. The oil return from the turbo can be used off your current engine. It bolts on where the`spot for a mechanical fuel pump is. It is possible that the injectors are the right length. They may be very slightly less lbs./hr than turbo injectors. Getting the motor out of the van should be a real treat. Hand cleaner with pumice will be required. Sounds like you got a great deal.

Im also curious about this. I bought a 99 na motor out of one of those frito lay trucks and was wondering how everything is gonna work. I have a 94 one ton dually that i picked up for free cause the owner didnt want anything to do with it after the second broken crank. Im waiting for the delivery of the motor now. Does anyone know if the n/a are any different internally? Cant really seem to find specs.

Im also curious about this. I bought a 99 na motor out of one of those frito lay trucks and was wondering how everything is gonna work. I have a 94 one ton dually that i picked up for free cause the owner didnt want anything to do with it after the second broken crank. Im waiting for the delivery of the motor now. Does anyone know if the n/a are any different internally? Cant really seem to find specs.
Same engine. The N/A precups are slightly smaller. New precups are over $50 each. Very hard to find the aftermarket precups. The heads would need machining to accept the aftermarket precups also. Not worth changing in my opinion. In the picture the precups in the head are aftermarket diamond [biggest you can get]. The one next to it is a square precup from GEP military N/A.

So what your saying is just put my turbo and everything else from my turbo engine on? Dont worry about the precups? Will it affect my towing or horsepower especially when im pulling hills? Maybe I should think about switching my heads over.

I doubt there will be enough power difference to warrant replacing the heads. Hard to say if you would even feel the difference.

I am smack dab in the middle of doing just this- taking a 6.5 N/A and turning it into a 6.5 T w/ electronic injection. Only difference, mine was mechanical and the one in your van isn't. There isn't anything to worry about. I even checked the heads off both engines and found that in my case, the precups were the same. Same part number for the heads on both engines. Can't say that is true in your case, but you can compare, if they are smaller I wouldn't let it keep me up all night. Since yours is already electronic you shouldn't have to change the front timing cover for the sensor. Also, bk95td has already mentioned the oil port for the turbo being present, with a plug in it. There should be a block-off plate where the turbo oil return goes (or the lift pump on a mechanical engine would actually slide into this space)... Internals are no different. None at all. Everything off your old engine should bolt up with no problems at all.

Is their a way to check the precups without pulling the heads? I believe the injectors are a different size on the turbos and will be switching these over.

Is their a way to check the precups without pulling the heads? I believe the injectors are a different size on the turbos and will be switching these over.

If you pull the injectors, you can see the back of the precups. The latest diamond ones have a wide mouth the nearly touches the outer walls of the prechamber. I'll get some pictures for you later today.

I did this on a 95 . The van precups were .040" shorter than the turbo . Put it back together and it went like stink ! Never should of sold it .

Is their a way to check the precups without pulling the heads? I believe the injectors are a different size on the turbos and will be switching these over.

No real need to switch the injectors if they are good. There's not much difference

It also wouldn't be a bad idea to check the timing chain now while you have easy access. Also check your motor pully and harmonic balancer

Ewc when you say you put it back together and went like stink? You mean you left the smaller precups in? Turbo? And it ran great?

I bought the truck with blown headgaskets . The PO had done pump , injectors , etc and I had some van heads with 77,xxx miles on them . I was curious about the precups so I measured them . Width was the same but the OAL was .040" shorter . I didn't have the $ for new heads so I just used them . This was my first 6.5 and not being able to drive it before the work , I didn't know what to expect . Ran pretty good . Could have been because of the new pump and injectors . I will say @ 180,000 miles you could still see the crosshatch in the cylinders . I would think that overall you may be down a little on power but it will run .

Just want to keep it dependable, also will be towing a3600 lb boat with it so i need all the power i can get. Before I install It would be much easier if I address everything. Anybody go with the crankshaft cradles on their engines?

Hows that job coming along bernie?