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6.5L Turbo Diesel 1992-00 6.5TD - Discussion forum for the 6.5L engine.

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  #1  
Old 07-04-2012, 12:23 PM
fss99701 fss99701 is offline
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Default 98 GMC 6.5L to 95 GMC 350 motor swop ?

Hi guys I have a 98 gmc 6.5L with a blown motor I want to take my motor out of my 95 gmc gas 350 and put in the 98 6.5 truck ..
Any clue on what I would need to do in order to get this done..

Please help
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  #2  
Old 07-04-2012, 12:31 PM
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john8662 john8662 is offline
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If you want a complete POS truck, then do the swap. I mean this for diesel conversions and going to gas both.

Just tail light the truck and buy a gasoline rig, someone will give you something for the truck as it is with the blown up diesel in it. Maybe they can fix it if you don't want to. Or sell both trucks and get something you want to drive. Gas trucks are very very common.

The only way I'd do something like this if if I had a complete wrecked gasoline truck with ALL the wiring (inside the cab and engine compartment) to do teh swap right, where you couldn't tell the truck was a Diesel before. Too much work to swap all the wiring, instrument cluster, gas tank, etc. You'd need another 1997-1999 gasoline donor rig to do this.

Sticking a TBI 350 (the 1995) engine setup would be really jicky, it's OBDI and your truck is OBD2. Future emissions testing etc would always be a hassle.

I've seen tons of 80's trucks that used to be 6.2L diesels with gasoline engines swapped in. They were always jicky unreliable trucks after the "conversion"

Seriously...
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1982 C10 SCSWB 6.5TD, mods too extensive to list. (13.69 1/4 mile @94.6 MPH) RACE TRUCK
1982 C10 SCSWB 6.2NA, 2.73 700
1986 C10 SCLWB 6.2TD 3.73 700
1984 Mercedes 190D 2.2L 5-speed Stir
1989 V20 SUB 6.2NA, 3.73 400
1994 G20 VAN 6.5NA, 3.42 60E
1994 K20LD ECSWB 6.5TD, 3.42 80E
1995 K20 SUB 6.5TD, Was Baddass, wrecked. www.evilprogressive.com
1995 C3500HD DRW 6.5TD, 12' Flatbed 5.13 80E
1995 C3500HD DRW 6.5TD, 18' Rollback Wrecker 4.63 80E
1995 C20LD ECSWB 6.5TD 3.73 80E
1995 K20LD SCLWB 6.5TD 3.73 80E
1996 K30 DRW 6.5TD 4.10 80E
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  #3  
Old 07-04-2012, 01:11 PM
fss99701 fss99701 is offline
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Thanks 4 the info even if its not what I was hoping to hear.
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  #4  
Old 07-04-2012, 01:37 PM
greatwhite greatwhite is offline
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Pretty much all been said.

Your problem is the spread in model years.

It would have been a lot of work but if you had a gas and diesel gmt400 in the 96-2000 range it would have worked.

Or, you can swap the entire interior and harness from the 95 to the 98. Plus all the chassis and supporting bits.

What is wrong with the 95?

Depending on what's gone on it, it might be simpler to use the 98 as a parts donor (ie: body panels, etc) to get the 95 back on the road.

Getting the 350 into the 98 would be a mess, but swapping parts on to the 95 will work with 90% of the truck. You can even swap in the 98 interior if you do your research. Quite a few people have done it on a few other full size Chevy forums....wink, wink.



In a nutshell; your 95 truck gets a new life and your 98 dies to give it one.
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Last edited by greatwhite; 07-04-2012 at 01:47 PM.
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  #5  
Old 07-04-2012, 02:03 PM
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Vin82k3500 Vin82k3500 is offline
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annother issue you will run into is that the 98 year pickups and later have a transponder in the lock cylinder and coded key it would deffinately be an obstacle I have done a similar swap in a 92 I wouldnt to it again
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Old 07-04-2012, 02:46 PM
greatwhite greatwhite is offline
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My 98 k2500 has theft deterrent but it's in the column only.

No transponder key.

Maybe the 1500's are different?
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Old 07-04-2012, 08:13 PM
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Vin82k3500 Vin82k3500 is offline
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not sure I changed a colum in a 98 k1500 with a 5.0 gasser and had to do that darned releard 3 times before it would run
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