6.5 parts on a 6.2?

[torque454]

I am not sure if i'll get to buy this 96 burb or not. Id like to but if not i am for sure getting a 6.2 or 6.5 diesel of some type. Im tired of getting ahold of junky, highmilage, fuel sucking, maintaince hogging, power lacking gas burners. Even my 454, which i DO like, cant compare to a 6.5 really, as it makes 370ft lb @ 2800 meanwhile making 10mpg. The 6.5 turbo - 385ft lb @ 1800 and getting 22mpg. Which do you chose? On top of that the diesel, unless its an oldsmobile 350 diesel :D will last alot longer. Now with all that said, if i get ahold of a decent 6.2, can i take the exhaust manifolds, downpipe, turbo, the inlet for the turbo that bolts to the intake, and other various turbo/exhaust related parts from a 6.5 TD, and put them on the 6.2 and make it a 6.2 turbo? How close can i get power wise to a 6.5 with a 6.2 using that setup? Will it utilize the stock 6.2 heads, injectors, and injector pump? (with the fuel turned up of course) I need to pull 7,000 pounds mostly in town. Not trying to win races with it, but i dont want to piss off the world because i cant get up to speed quick enough and causing traffic to back up behind me. My old worn out 89 350 burb, 1/2 ton 4x4 at that, wouldnt do it, even if its 700r4 transmission did work. My 72 with a 350/350/3.73 isnt gonna do it either. Not to mention the extra fuel that would consume. My 454 would do it, but it currently sits in storage outside of a vehicle. The 6.2 seems to be a cheap(er) diesel option to me and it only needs to work for now. I can always upgrade to the 6.5 later. Any thoughts are appreciated.

[njdevi11]

I've got a 6.5 Turbo on my 6.2 Jeep, I got a 6.5 HD intake, plenum, gm-4 turbo, and 6.5 exhaust header on the passenger side. I needed to make a custom crossover and use my 6.2 header on the drivers side because of my tight frame rails but if the engine is in its proper place it should be fine to use all the 6.5 parts.

It works great, It a fairly common swap. If your serious about getting big power you can look into the banks kit. My next upgrade fro power will be another twist of the injection pump and possibly an air/water intercooler.

The one thing I did need was the 6.5 header bolts to bolt the 6.5 headers to the 6.2. If your pulling from a donor truck they should be available.

Another common upgrade is 6.5 heads (they have smaller valves, but last longer because the heads are stronger and resist cracking)

Mostly the only place your going to run into trouble swapping parts between a 6.2 and a 6.5 is going between v-belt parts and serpentine parts. Aside from that all the 6.5 stuff is pretty much the same.

Taking an educated guess I'd say a 6.2 is capable of about 400lbft and 250hp heavily modified and a 6.5 is capable of about 450/300. However an electronically injected 6.5 is much more expensive to upgrade.

There is also difference in the prechambers the 6.2's were designed for fuel efficiency and the 6.5 were designed for more flow/power. If you're looking to save fuel and counting pennies I would look for a 6.2.

[torque454]

I think power equal to that of a 6.5 or around would be good enough. i dont need to save every penny i can on fuel but id rather get better milage than id get with a gas motor. Plus the dependability and longevity would be superior to the gas motor. A 6.5 gm-8 turbo on a 6.2 i think would be good enough for me, perhaps a few more modifications (exhaust, intercooler, a bit more boost, maybe all the fuel i can push to it, lol) I dont see what advantage the banks kit would have over a 6.5 turbo and good exhaust and the fuel turned up... isnt that all the banks kit does anyways? which would be cheaper? i havnt priced the banks kit for the 6.2. I do however remember requesting info on the kit for the 6.2 and they sent a dyno sheet with the info and compared it to a 6.5 and said the 6.2 with their sindwinder kit made more power than a 6.5, plus boosted its milage. So i dont know where i stand on that. I guess i'll just have to look into it more. Thank you for the reply, im gonna keep looking at trucks, if i can find a 6.5 that would be my prefrence as a starting point.

[alaskanvegi]

The 6.5 has an oil feed line to the turbo that comes from the block in front of the right head, the 6.2's don't. My 16 yo son has taken over a 94 CC project and we are doing a 6.2 shortblock exchange for the 6.5. The 6.2 does have a oil sender at the back of the block we may tie the turbo oil line to.

[torque454]

Ok so where does banks get the oil to their turbo from? Maybe i could use that spot to get oil from for the 6.5's turbo. And are you sure that is a feed and not a drain? Theres gotta be a way to put a turbo on a 6.2, it sounds pretty common. I think ive read that there are some turbos that use just use the engines collant to keep it cool, and no oil. (not sure how that works, i know on my 2.3 turbo ford group they talk about turbos that are cooled by water, and some that are cooled by both water and oil) Maybe banks' turbo is a water cooled unit. I'll do some research. Thanks for the reply.

[Craig]

I did a 6.5 to 6.2 conversion on my 1994. It uses a 6.2 block and the rest, heads, intake, turbo... are 6.5. The oil is feed to the turbo with custom fittings and piping from the oil switch port on the back of the engine as mentioned by someone on this thread. Hope this is helpfull.

[torque454]

Ok so thats doable then. Sounds good. thank you.

[sixnickel]

Banks gets it's oil for the turbo down by the oil filter. Where the oil cooler lines come out of the block there is a 1/4" pipe plug over the oil filter boss on the block. Plumb into this hole and you will have all the oil you need for the turbo.

[Craig]

Sixnickel,

Can you use a braided line like the factory ones, but longer?

[torque454]

Banks gets it's oil for the turbo down by the oil filter. Where the oil cooler lines come out of the block there is a 1/4" pipe plug over the oil filter boss on the block. Plumb into this hole and you will have all the oil you need for the turbo.

Six, thank you for the info. I see you have two diesels. a 99 6.5 turbo and a 91 6.2 turbo. Which one is faster and which one pulls better? :D

[sixnickel]

That's a good question. The 2 burbs have 3.42's and the K3500 has 4.10's all 3 get up and go. The 4.10's run out of the torque band to quickly for the torque to do you any good where the 3.42's stay in the sweet zone longer to do you more good! The Banks 6.2 is amazing compared to when it was NA. If I could get the transmission (700R4) to up shift at WOT properly I think it would blow the 6.5s away!! Bottom line is they all go good!!!

[alaskanvegi]

We just discovered that our Hummer 6.2's rear main bearing cap where the rear oil pan seal sits against is smaller than the 6.5, the Hummer pan won't work in the truck, we may have to do some custom pan modifications.