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  #1  
Old 11-17-2011, 02:32 PM
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Knot a MBZ diesel GM 6.5L any thoughts

Okay I am once again on the look for a pick up. I have searched and keep going back and forth. Currently looking at 1994 GMC diesel. Does anyone here know a good forum to follow or have had experience with these good or bad ? Just starting to look but found one that the owner says is real clean rust free etc.
I will see it tomorrow
Thanks
Alan.
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  #2  
Old 11-17-2011, 02:37 PM
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Quote:
Originally Posted by Beastie View Post
Okay I am once again on the look for a pick up. I have searched and keep going back and forth. Currently looking at 1994 GMC diesel. Does anyone here know a good forum to follow or have had experience with these good or bad ? Just starting to look but found one that the owner says is real clean rust free etc.
I will see it tomorrow
Thanks
Alan.
I have a 6.2L and the 6.5 has more guts. It's currently used in one whole generation of Humvees. It's real important to get both the manual and the owner's manual.

I got both and spent a lot of time reading them
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  #3  
Old 11-17-2011, 03:51 PM
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dieselplace is a good site on the GM diesels.
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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Old 11-17-2011, 04:45 PM
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Good to know. The owner say it has it is in great shape std bed std cab.
Thanks
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  #5  
Old 11-17-2011, 06:15 PM
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Quote:
Originally Posted by vstech View Post
dieselplace is a good site on the GM diesels.
x2. dieselplace.com
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  #6  
Old 11-17-2011, 08:16 PM
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Originally Posted by Beastie View Post
Good to know. The owner say it has it is in great shape std bed std cab.
Thanks
a great drivetrain is good, but be SURE the truck suits your needs before you purchase.
I bought my 92 6.2L truck with standard cab, long bed.
I REALLY needed at least an extended cab... ZERO room in the truck for parts, etc... and I need the bed length for equipment and tools...
it's REALLY hard to sell an old diesel truck. so be ABSOLUTELY SURE before you buy it!!!!
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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  #7  
Old 11-17-2011, 10:13 PM
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Dieselplace seems to have 2-3 x the 6.5 traffic that thetruckstop.us has.
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  #8  
Old 11-17-2011, 10:19 PM
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i own two 6.2's... looking at getting a 6.5 in a suburban... seeing the 6.5 is basically a bored out 6.2 with a turbo (many swap in 6.5 upgraded parts &seals on 6.2's) you may find the CUCV forum at steelsoldiers.com a good site as well... the cucv techmanuals are great for working on 1980's gm trucks as well. oh and i really like the haynes diesel engine manual.... its got good stuff on 6.2's and 6.5's
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  #9  
Old 11-17-2011, 10:55 PM
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I"ve got all the 6.2 GM manuals... and I've got TWO 6.5 motors... and a 86 truck for sale... needing assembly though. feel free to EMAIL me...
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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  #10  
Old 11-18-2011, 02:17 AM
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94 6.5 is a bit of an orphan

The IP is different than all other years of 6.5 engines. Also there are lots of 6.5 pickups out there in all configurations, try to get one where the motor has been replaced. The crate motors have most of the frailties fixed that plague original engines. You would be surprised at how many lowish mileage gm or chev trucks have had new engines installed, a lot more than ford or cummins. New motor good, original motor very iffy. Cheers Dan
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  #11  
Old 11-19-2011, 12:03 AM
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coolant passageway cavitation,doesnt seem to happen to cummins 12 valve(take a look at the injection pump and then your w123 body diesel,sharing is caring,eh?)
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