CK5
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What are everyone's past and/or present with the 6.2 and 6.5 Detriot Diesel Engines?

Wait, are all 6.5's turbo? For some reason I thought they were NA, like in military Humvees for example.

Some are, but the overwhelming majority of 6.5 truck engines are turbocharged. They work well in either form, but the turbine is a worthy addition.
 
Wait, are all 6.5's turbo? For some reason I thought they were NA, like in military Humvees for example.

I've only personally seen one N/A 6.5 in a passenger vehicle, and it was a crate replacement for a 6.2. I don't think GM offered them for C/K trucks. :dunno:
 
As far as I know the 6.2s in the military were the NA diesels. While 6.5s were all Turbo

No, N/A 6.5 engines are out there. They were sold for offroad use, marine applications, and I think some P30 applications as well. And, as I mentioned previously, replacements for blown up 6.2 engines after the 6.2 went out of production.

I didn't know that HMMWV 6.5 engines were N/A. I had assumed they switched to turbines when the rest of the GM fleet did. :dunno:
 
Some are, but the overwhelming majority of 6.5 truck engines are turbocharged. They work well in either form, but the turbine is a worthy addition.

Only $6700! :deal:

non-turbo-reman-lg.jpg
 
Thats atrocious lol. Sure its 7500 lbs. At least for a combat/bugout situation them poor guys should be able to get out of there faster. Then again theyre just outrunning camels so if its got plenty of armor then its ok.
 
No, they weren't offered until '92 (when the squarebodies were long gone), but the 6.5 engine is based on the 6.2 design, and they are quite compatible. The first 2 years have mechanical injection pumps (just like a 6.2), so it is a direct swap for a 6.2 engine (minus clearance issues around the turbocharger).

Swapping in place of a TBI 350 requires little modification. You probably wanna swap out the fuel filter for one that separates water, and you'll have to wire up glow plugs (most of us wire them to a push button). Stock 6.2/6.5 radiators are quite a bit larger than sbc radiators. Beyond that, stuff should swap quite nicely. If you're starting with a carb truck you will also have to install a fuel return line. If you swap in a 6.5, you'll also have to upgrade to an electric lift pump (as the fuel pump port gets repurposed due to the turbine setup). With a 6.2 you can run either electric or

lift pump.

I think that's about it. It's a lot easier than most of the possible engine swaps.

I told my buddies that I wanted to swap out the 350 and put in a 6.2 or 6.5 however they look at it like it's alot to do. Since they assume that since Its a diesel it's hard. I'm like "dude it's a 6.2 or 6.5 swap, not a Cummins swap"
 
I told my buddies that I wanted to swap out the 350 and put in a 6.2 or 6.5 however they look at it like it's alot to do. Since they assume that since Its a diesel it's hard. I'm like "dude it's a 6.2 or 6.5 swap, not a Cummins swap"

Yeah, it's a LOT less work than shoe-horning in a non-OEM engine. GM kept things very similar between the 6.2 line and the sbc line. coming from a SBC, it's not really much harder than swapping a BBC in, and it's a lot easier than swapping a TBI BBC in for a carb'd SBC (for example).
 
Practically no engine swap is "easy" or un-complicated...it is always easier to replace one with another identical engine..but swapping a diesel in place of gas is not THAT bad,but many things will need to be worked around too-....your gas truck's dash wont have a "diesel only" fuel gauge (no biggie),nor will it have a "water in fuel" and "glow plug" lamp..the fuel tank wont have a sensor for water in fuel,and no factory water drain siphon ability either...none of these are a "must",but are nice to have..

One thing I'd be worried about as far as swapping a diesel into a gas powered truck that had a computer,would be the fact you'll have no end of "check engine" codes and the light staying on due to all the "missing" input from various sensors...here they don't exempt you from having a functioning CEL just because you swapped from gas to a diesel--if the light is on,you flunk inspection...period!..

I just see no big advantage to swapping ,when a gas engine is almost as cheap to run,and less costly for fuel...
 
Practically no engine swap is "easy" or un-complicated...it is always easier to replace one with another identical engine..but swapping a diesel in place of gas is not THAT bad,but many things will need to be worked around too-....your gas truck's dash wont have a "diesel only" fuel gauge (no biggie),nor will it have a "water in fuel" and "glow plug" lamp..the fuel tank wont have a sensor for water in fuel,and no factory water drain siphon ability either...none of these are a "must",but are nice to have..

One thing I'd be worried about as far as swapping a diesel into a gas powered truck that had a computer,would be the fact you'll have no end of "check engine" codes and the light staying on due to all the "missing" input from various sensors...here they don't exempt you from having a functioning CEL just because you swapped from gas to a diesel--if the light is on,you flunk inspection...period!..

I just see no big advantage to swapping ,when a gas engine is almost as cheap to run,and less costly for fuel...
Might as well just get another one with a diesel and keep the gas one
 
What diesel4 said. Its not worth the trouble unless you go all out. Besides you could buy a civic for what youll pay to swap a motor.
 
Practically no engine swap is "easy" or un-complicated...it is always easier to replace one with another identical engine..but swapping a diesel in place of gas is not THAT bad,but many things will need to be worked around too-....your gas truck's dash wont have a "diesel only" fuel gauge (no biggie),nor will it have a "water in fuel" and "glow plug" lamp..the fuel tank wont have a sensor for water in fuel,and no factory water drain siphon ability either...none of these are a "must",but are nice to have..

One thing I'd be worried about as far as swapping a diesel into a gas powered truck that had a computer,would be the fact you'll have no end of "check engine" codes and the light staying on due to all the "missing" input from various sensors...here they don't exempt you from having a functioning CEL just because you swapped from gas to a diesel--if the light is on,you flunk inspection...period!..

I just see no big advantage to swapping ,when a gas engine is almost as cheap to run,and less costly for fuel...

If you drive a bunch, the fuel cost savings become significant. That being said, if you're driving a lot, a square-body of any sort is probably the wrong vehicle to drive.

Also, remember that, outside of New England, most states either don't do emissions/safety testing at all or they just test certain metropolitan areas. Many if not most of us don't have to have function CEL systems. FWIW.
 
Might as well just get another one with a diesel and keep the gas one

What diesel4 said. Its not worth the trouble unless you go all out. Besides you could buy a civic for what youll pay to swap a motor.

Engine swapping is worth it if

A) you enjoy doing the swap
B) you have the parts lying around
C) you plan to drive a lot of miles and want the higher mileage

If C, it takes a lot of miles, and you'll never, ever get nearly the mileage of a decent $500 commuter car. And the $500 car may even turn out to be more reliable than a 30-year-old truck. So if you are concerned with the cost of driving, just buy a Saturn. It's hard to argue with 40MPG from a <$1000 car if you're concerned with economics.

If you enjoy swapping motors, or you wanna learn a new skill, by all means...we will be glad to help ya learn.

If you have the parts lying around, that works too!

But this isn't something that should be agonized over. Pick something and run with it! Remember, given how often 30-year-old trucks like to break, you'll have good opportunities to upgrade things later on if you change your mind... :haha:
 
I'd never do it for any practical reason. Really, what practical reason is there to have a 1983 truck at all? Like I said at the beginning, I like the simplicity of these old NA diesels. I've been a little paranoid of my TBI swap with a 25 year old computer velcro'd behind the dash.
 
Engine swapping is worth it if

A) you enjoy doing the swap
B) you have the parts lying around
C) you plan to drive a lot of miles and want the higher mileage

If C, it takes a lot of miles, and you'll never, ever get nearly the mileage of a decent $500 commuter car. And the $500 car may even turn out to be more reliable than a 30-year-old truck. So if you are concerned with the cost of driving, just buy a Saturn. It's hard to argue with 40MPG from a <$1000 car if you're concerned with economics.

If you enjoy swapping motors, or you wanna learn a new skill, by all means...we will be glad to help ya learn.

If you have the parts lying around, that works too!

But this isn't something that should be agonized over. Pick something and run with it! Remember, given how often 30-year-old trucks like to break, you'll have good opportunities to upgrade things later on if you change your mind... :haha:
Engine is worth it if

A) you enjoy doing the swap
B) you have the parts lying around
C) you plan to drive a lot of miles and want the higher mileage

If C, it takes a lot of miles, and you'll never, ever get nearly the mileage of a decent $500 commuter car. And the $500 car may even turn out to be more reliable than a 30-year-old truck. So if you are concerned with the cost of driving, just buy a Saturn. It's hard to argue with 40MPG from a <$1000 car if you're concerned with economics.

If you enjoy swapping motors, or you wanna learn a new skill, by all means...we will be glad to help ya learn.

If you have the parts lying around, that works too!

But this isn't something that should be agonized over. Pick something and run with it! Remember, given how often 30-year-old trucks like to break, you'll have good opportunities to upgrade things later on if you change your mind... :haha:
I wouldn't mind getting a small car like an accord or Something similar for fuel for everyday use. However the streets here in new Orleans is ridiculous. Its like driving through mountains. You'll be asking yourself why would people here in new Orleans buy corvettes instead of a truck. Too many freakin pot holes
 
I'd never do it for any practical reason. Really, what practical reason is there to have a 1983 truck at all? Like I said at the beginning, I like the simplicity of these old NA diesels. I've been a little paranoid of my TBI swap with a 25 year old computer velcro'd behind the dash.

Oh yeah, I forgot that one. If you simply like that particular old engine, there aren't really any substitutes out there... :saweet:
 

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