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99xcss4

frank'n (truburban) K-2500
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this is from the wikipedia page on the 6.5

6.5L​

22nd MEU marines extract a 6.5L V8 from a HMMWV (2014)
The 6.5 L (395 cu in) version was introduced in 1992 to replace the 6.2. Most 6.5s were equipped with a turbocharger. This engine was never meant to be a power and torque competitor with Ford/International and Dodge/Cummins, but rather a simply designed workhorse engine that made credible power, achieved decent fuel economy, and met emission standards in half-ton trucks. The Duramax 6600 replaced the 6.5 in light trucks beginning in 2001 and the C3500HD medium duty cab and chassis (replaced by the C4500 Kodiak/TopKick) and vans beginning in 2003, but the 6.5 (6500 Optimizer) is still produced by AM General for the HMMWV.

There are several GM 6.5-liter diesel engine production options. The turbocharged L56 (VIN "S") was used in 1/2-ton and light-duty 3/4-ton. Heavy-duty 3/4-ton and 1-ton trucks used the turbocharged L65 (VIN "F") engine. The L56 is emissions controlled with EGR and catalytic converters. The L65 engine has neither an EGR system nor a catalytic converter, but there is a soot trap on L65 engines that is often mistaken for a catalytic converter. GM was the first manufacturer to introduce an electronically-controlled fuel injection system into a diesel pickup truck.[2] The L49 (VIN "P") and L57 (VIN "Y") are both naturally aspirated engines. L57 is listed as HO or Heavy Duty. Additional RPO codes are LQM 175 hp (130 kW) and LQN 190 hp (142 kW).

Changes were made by GM to the 6.5 in their light trucks for emissions or reliability improvement. The 1992–1993 model years used a 6.5-specific Stanadyne DB-2 mechanical injection pump. GM replaced the DB-2 with the electronic throttle DS-4 in 1994–2000 vehicles. In mid-1996, GM implemented a redesigned engine cooling system incorporating twin non bypass-blocking thermostats and a 130-US-gallon-per-minute (490-liter-per-minute) water pump. This improved the flow through the block by 70–75% and flow to the radiator 7%.


Applications​

Turbocharged:



Naturally aspirated:


  • 1994–2004 AM General Hummer H1 (also used the turbocharged version)
  • 1994–present AM General HMMWV (also used the turbocharged version)
  • 1994–1996 Chevrolet and GMC G20 and G30 vans (naturally aspirated)
  • 1999–2005 Workhorse Custom Chassis (light- and medium-duty forward-control chassis): P42 Commercial, P32 Motorhome (also turbocharged on some versions)[3]

Specifications​

  • Engine RPO codes: L49, L56, L57, L65, LQM, and LQN.
  • Displacement: 395 cu in (6.5 L)
  • Bore × stroke: 4.06 in × 3.82 in (103.1 mm × 97.0 mm)
  • Aspiration: Turbocharged (BorgWarner GM-X series). Also available naturally aspirated.
  • Compression: GM early 21.3:1, GM late 20.3:1, AMG/GEP marine 18.0:1
  • Injection: Indirect
  • Horsepower/torque (lowest): 160 hp (119 kW) at 3,600 rpm / 290 lb⋅ft (393 N⋅m) at 1,700 rpm (naturally aspirated)
  • Horsepower/torque (highest): 215 hp (160 kW) at 3,200 rpm / 440 lb⋅ft (597 N⋅m) at 1,800 rpm (turbocharged)
  • Redline: 3,600 rpm
 

99xcss4

frank'n (truburban) K-2500
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hiere is 6.2 info

The original 6.2 L (379 cu in) diesel V8 was introduced in 1982 for the Chevrolet C/K and was produced until 1993. The 6.2L diesel emerged as a high-fuel-economy alternative to the V8 gasoline engine lineup, and achieved better mileage than Chevrolet's 4.3L V6 gasoline engine of the 1980s, at a time when the market was focused on power rather than efficiency. However, it was designed to easily install in place of the gasoline V8, using the same mounting and attachments for transmissions as all GM truck engines. Overall weight for the complete engine is slightly heavier than the 7.4L/454 V8 big-block gasoline engine. There were about 300 6.2L diesel engines which were placed into 2-door cars in 1981, prior to official production. These were then given to the United States government and issued to various federal agencies and military branches. These were used as testbeds regarding long term fuel economy and reliability in cars.

Applications


Specifications

  • Engine RPO codes: LH6 ('C' series, with EGR / EPR) and LL4 ('J' series)
  • Displacement: 6.2 L (379 cu in)
  • Bore × stroke: 3.98 in × 3.8 in (101.1 mm × 96.5 mm)
  • Aspiration: Natural
  • Compression: 21.5:1
  • Injection: Indirect
  • Horsepower and torque (at launch): 130 hp (97 kW) at 3,600 rpm / 240 lb⋅ft (325 N⋅m) at 2,000 rpm
  • Horsepower and torque (final): 160 hp (119 kW) at 3,600 rpm / 285 lb⋅ft (386 N⋅m) at 2,000 rpm
  • Horsepower and torque (US Army HMMWV model): 185 hp (138 kW) at 3,600 rpm / 330 lb⋅ft (447 N⋅m) at 2,100 rpm
  • Redline: 3,600 rpm
  • Idle RPMs: 550 ± 25
 

someotherguy

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this is from the wikipedia page on the 6.5

6.5L​

22nd MEU marines extract a 6.5L V8 from a HMMWV (2014)
The 6.5 L (395 cu in) version was introduced in 1992 to replace the 6.2. Most 6.5s were equipped with a turbocharger. This engine was never meant to be a power and torque competitor with Ford/International and Dodge/Cummins, but rather a simply designed workhorse engine that made credible power, achieved decent fuel economy, and met emission standards in half-ton trucks. The Duramax 6600 replaced the 6.5 in light trucks beginning in 2001 and the C3500HD medium duty cab and chassis (replaced by the C4500 Kodiak/TopKick) and vans beginning in 2003, but the 6.5 (6500 Optimizer) is still produced by AM General for the HMMWV.

There are several GM 6.5-liter diesel engine production options. The turbocharged L56 (VIN "S") was used in 1/2-ton and light-duty 3/4-ton. Heavy-duty 3/4-ton and 1-ton trucks used the turbocharged L65 (VIN "F") engine. The L56 is emissions controlled with EGR and catalytic converters. The L65 engine has neither an EGR system nor a catalytic converter, but there is a soot trap on L65 engines that is often mistaken for a catalytic converter. GM was the first manufacturer to introduce an electronically-controlled fuel injection system into a diesel pickup truck.[2] The L49 (VIN "P") and L57 (VIN "Y") are both naturally aspirated engines. L57 is listed as HO or Heavy Duty. Additional RPO codes are LQM 175 hp (130 kW) and LQN 190 hp (142 kW).

Changes were made by GM to the 6.5 in their light trucks for emissions or reliability improvement. The 1992–1993 model years used a 6.5-specific Stanadyne DB-2 mechanical injection pump. GM replaced the DB-2 with the electronic throttle DS-4 in 1994–2000 vehicles. In mid-1996, GM implemented a redesigned engine cooling system incorporating twin non bypass-blocking thermostats and a 130-US-gallon-per-minute (490-liter-per-minute) water pump. This improved the flow through the block by 70–75% and flow to the radiator 7%.


Applications​

Turbocharged:



Naturally aspirated:


  • 1994–2004 AM General Hummer H1 (also used the turbocharged version)
  • 1994–present AM General HMMWV (also used the turbocharged version)
  • 1994–1996 Chevrolet and GMC G20 and G30 vans (naturally aspirated)
  • 1999–2005 Workhorse Custom Chassis (light- and medium-duty forward-control chassis): P42 Commercial, P32 Motorhome (also turbocharged on some versions)[3]

Specifications​

  • Engine RPO codes: L49, L56, L57, L65, LQM, and LQN.
  • Displacement: 395 cu in (6.5 L)
  • Bore × stroke: 4.06 in × 3.82 in (103.1 mm × 97.0 mm)
  • Aspiration: Turbocharged (BorgWarner GM-X series). Also available naturally aspirated.
  • Compression: GM early 21.3:1, GM late 20.3:1, AMG/GEP marine 18.0:1
  • Injection: Indirect
  • Horsepower/torque (lowest): 160 hp (119 kW) at 3,600 rpm / 290 lb⋅ft (393 N⋅m) at 1,700 rpm (naturally aspirated)
  • Horsepower/torque (highest): 215 hp (160 kW) at 3,200 rpm / 440 lb⋅ft (597 N⋅m) at 1,800 rpm (turbocharged)
  • Redline: 3,600 rpm
Like I said, the 1993 sales brochure would be the source I'd look at, if I cared to know 100% for sure. I wouldn't trust wikipedia for 100% correct info as being user-edited it is prone to error. Many years ago I attempted to correct a few small errors on the 3500HD page and had my edits kicked out, so.. whatever. :)

I did message the seller asking for more info and will post back in the event they reply.

EDIT - he sent me pictures of the SPID label (blurry in the engine code section unfortunately) and the camper loading sticker, so I've got the VIN - 8th digit is F, which I am *pretty sure* is supposed to be the 6.5 turbodiesel, but this 1993 clearly is not turbo. I wonder if it started life with one and this isn't the original engine? Wish I could read the engine code on his SPID label.

Richard
 
Last edited:

HotWheelsBurban

Gotta have 4 doors..... Rawhide, TOTY 2023!
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Maybe a little overpriced considering the engine but damn for a '93 3500 this truck looks clean. Straight body at least from the driver's side they show us. Obviously they just wetted it down so there's no telling if the paint is actually this shiny or they're just hiding dead clearcoat..


'93 C3500 crew with PY0's and... a non-turbo diesel. I knew they were offered in '93 but I haven't seen one in person. Pretty sure that's the non-turbo 6.5, thinking maybe vin code P. I'd have to go read the sales brochure to be sure, but being a diesel, it's only a mild curiosity for me. ;)

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Richard
Outside looks familiar.... eventually mine will get a set of PY0s. Does look like a nice truck though. The 2000 CCLB in the previous post looks good too. I wonder if it had the wheels as factory?
 

someotherguy

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No more responses from the seller, either just a shady dude or someone that doesn't know any better. Maybe the "turbo" is hiding inside the air cleaner. Because it sure as hell doesn't look like a 6.5td to me!

Since the 8th digit of the VIN is indeed "F" I'll just have to assume the original engine failed and it got swapped for a non-turbo 6.5 or possibly even a 6.2.

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vs.

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Richard
 

someotherguy

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Seeing that truck being parted out makes me sad. Body looks clean other than minor hood damage. Driver seat replacement with whatever that thing is sucks.. but it was a '94 K1500 w/F44 package, 5 speed with gray interior. Door panels and dash look pretty good from here.. pic isn't large enough to see the shift pattern to know if it's an NV4500 or not.

Richard
 
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