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Old 12-30-2012, 06:58 PM   #1 (permalink)
JLanzino
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Longest Lasting 6.5 Turbo Diesel

Hey Guys,

I am wondering what or Who is or has the longest lasting 6.5TD?

Lets hear what you guys have

My 94 is only at 380`000k so hopefully there more life in her yet
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1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 6.2L C-Code Detroit Diesel, 700R4 Transmission, RWD, 3:08, 1`000`000 Km & Counting All Original My Garage
1991 GMC Sierra 1500 SLE 1/2 Ton Extended Cab, Long Box, 6.2L C-Code Detroit Diesel, 700R4 Transmission, 3:73, 4X4, 295`000KM
1991 GMC Sierra 2500 SL 3/4 Ton Regular Cab, Long Box, 6.2L J-Code Detroit Diesel, 4L80E Transmission, 3:73, 4X4, 556`000KM
1994 GMC Sierra 3500 SLE 1 Ton Crew Cab, Long Box, Dually, 6.5L F-Code Detroit Turbo Diesel, 4L80E Transmission, 4:10, 4X4, 405`000KM,
1988 GMC Sierra 1500 SL 1/2 Ton Extended Cab, Long Box, 5.0L H Code, TH400 (3L80) Transmission, RWD, 3:42, 306`000Km & Counting
1991 GMC Sierra 1500 SL 1/2 Ton Regular Cab, Long Box, 5.7L, 700R4 Transmission, RWD, 3:08, 256`000KM
Proud Member # 992 Of The 3500 Dually Club, # 40 Of The Old SOBs, # 117 The Regular Cab Club, Member Of The ODPC
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Old 12-30-2012, 07:28 PM   #2 (permalink)
mxz_583_1997
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372000km and slowly dieing
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1994 GMC 1500 HD Z71 4x4 ext cab 6.5L TD,3.73 GEAR RATIO LIMITED SLIP POSITRACTION,4L80-E 4-SPD Lubrication Specialists oil lines,Transmission lines replaced with Hydraulic lines,pmd mounted on heat sink in bumper home made wiring harness all soldered greased and shrink tubed,gutted intake,tcc mod,380000kms
egr blocked off with intake gaskets,New heads May 2012,ARP head studs,2 1/2" cross over 3" down pipe 4" straight pipe

1998 k2500 Z71 ext cab 6.5 TD,stock exhaust,muffler delete soot trap gutted,4:10 gears,grey standyne pmd in front bumper,312000km,Lubrication Specialists oil lines,trannytemp,boost,EGT,fuel pressure gauges
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Old 12-30-2012, 07:39 PM   #3 (permalink)
57diesel
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300,000 K is only 186,411 miles. 380,000 KM is 236,000 so that is a good start.

My truck has 305,000 (491,000 K)at this point. I bought it from the 3rd owner who knew the first two and supposedly only major work that has been done is the T case.
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96 Suburban 2500 4x4 vin F 320K miles so far
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Old 12-30-2012, 07:44 PM   #4 (permalink)
mxz_583_1997
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Quote:
Originally Posted by 57diesel View Post
My truck has 305,000 (491,000 K)at this point.
impressive that on a 506 block?
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1994 GMC 1500 HD Z71 4x4 ext cab 6.5L TD,3.73 GEAR RATIO LIMITED SLIP POSITRACTION,4L80-E 4-SPD Lubrication Specialists oil lines,Transmission lines replaced with Hydraulic lines,pmd mounted on heat sink in bumper home made wiring harness all soldered greased and shrink tubed,gutted intake,tcc mod,380000kms
egr blocked off with intake gaskets,New heads May 2012,ARP head studs,2 1/2" cross over 3" down pipe 4" straight pipe

1998 k2500 Z71 ext cab 6.5 TD,stock exhaust,muffler delete soot trap gutted,4:10 gears,grey standyne pmd in front bumper,312000km,Lubrication Specialists oil lines,trannytemp,boost,EGT,fuel pressure gauges

Last edited by mxz_583_1997; 12-30-2012 at 07:45 PM.
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Old 12-30-2012, 08:12 PM   #5 (permalink)
dka99burb
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I have 265k miles. No noticable blowby. Original engine according to the PO.
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2003 1500HD LS - 105,000miles
Looking for 285-70-17 AT tires for my H2 wheels


1999 K2500 Suburban SLT 6.5L TD with 270k miles - SOLD
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Old 12-30-2012, 08:16 PM   #6 (permalink)
Octane
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Quote:
Originally Posted by mxz_583_1997 View Post
372000km and slowly dieing
that sure does suck, my trucks at 370k km and about 5k ago i chipped it with the hx40 and the whole works, pumping 20-25 # of boost and man does she ever go now, hardly any blowby too, maybe im just lucky lol
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1995 Chevy 2500 6.5l Turbo Diesel w/ intake restrictions removed . Diamond eye 4" exhaust straight piped, HX40W-II turbo with a K&N 4" pod ( temporary), ARP head studs & new heads, injectors w/ pop @ 2300 psi, Buddy "3" banger chip, VIN F, Currently running 20# boost
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Old 12-30-2012, 08:19 PM   #7 (permalink)
57diesel
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Mine does about a quart (1 liter) of oil in 1500 miles (2400k). I always have oil dripping off the bottom of the turbo and oozing out various places on the intake. Smokes pretty good if you pull the oil cap off when its running so I am not expecting it to go another 100,000.
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Old 12-30-2012, 08:21 PM   #8 (permalink)
dka99burb
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I'm continuously adding upgrades to mine. I hope the bottom end sticks together a little longer... It's hard to tell if anything is going wrong since the diesel rattles anyway. No prediction allowed...LOL
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2003 1500HD LS - 105,000miles
Looking for 285-70-17 AT tires for my H2 wheels


1999 K2500 Suburban SLT 6.5L TD with 270k miles - SOLD
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Old 12-31-2012, 12:43 AM   #9 (permalink)
JSarge
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360k miles and show's lots of wear. Blow by, typical smoking, burns oil, etc. Still runs and pulls daily. I will run it into the ground before replacing it tho.
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[ '95 GMC C2500HD SLE 6.5TD 4L80E/G80/3.73 "F" TRIM - Ext Cab/Long Box ] Rebuild Thread: Click Here!
Vac pump del DE 3" down pipe w/ 4" straight pipe exits before axle H/O water pump 180 degree tstat
Bumper mounted FSD Home made TM @ 10 PSI Lube specialists oil line's Rebuilt 506 w/ ARP main studs


[ '88 GMC C3500 DRW SLE 6.5TD TH400/DANA 80/4.10 "F" TRIM - Ext Cab/Long Box ] Rebuild Thread: Click Here!
Original 7.4 truck GM Goodwrench 506 DB2-4911 180 degree tstat
Custom 3" side stack Home made TM @ 10 PSI Leroy Diesel oil line's


6.5 FAQ L@@K!: Click Here!
6.5 Mod List: Click here!
DB2 Conv Guide: Click Here!
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Old 12-31-2012, 01:39 AM   #10 (permalink)
thor04
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I'm just hitting 420000k and still runs great and has only two injection pumps and two sets of injectors and three sets of glows
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- 1996 GMC Ext Cab Short Box 1/2 Ton - 2wd - 6.5TD - 400000KM - Vin Code S - F Lower Intake - Peninsular Upper Intake - 3" Home made Exhaust from turbo to back - No Egr - No Vac Pump - Remote PMD location In Airbox - Turbomaster - Ramair Coldair Aircleaner Box - 6" By 10" Round K&N Air Filter - Autometer Boost, Trani, Pyro and Oil Pressure Gauges - Fuel Pressure Grauge - Stripped all A/C Components - Fed The Beast - Snow Performance WMI 2x1GPH Nozzels - #9 Resistor - Firestone Airbags In The Back
- Areo Racing Rims and Cooper Cobras Holding it all to the Ground Somewhat -
-Duramax Intercooler-
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