Fueled by Caffeine
Fueled by Caffeine MegaDork
3/22/22 5:07 p.m.
AWSX1686 (Forum Supporter)
AWSX1686 (Forum Supporter) GRM+ Memberand UltraDork
3/23/22 8:33 a.m.

Interesting. Not a Chevy guy, but that's neat. 

trigun7469
trigun7469 UltraDork
3/23/22 8:40 a.m.

looks like a lot of rust but cool nonetheless. 

Fueled by Caffeine
Fueled by Caffeine MegaDork
3/23/22 9:22 a.m.

In reply to trigun7469 :

laughs in minnesota.. 

RossD
RossD MegaDork
3/23/22 9:47 a.m.

In reply to Fueled by Caffeine :

Rust free in wisconsin, too.

Woody (Forum Supportum)
Woody (Forum Supportum) GRM+ Memberand MegaDork
3/23/22 11:11 a.m.

5150

accordionfolder
accordionfolder SuperDork
3/23/22 11:20 a.m.

I was under the impression that the 6.5 diesel isn't a well-loved creature? 

obsolete
obsolete GRM+ Memberand HalfDork
3/23/22 12:07 p.m.

Somebody got to buy a really weird truck on the government's dime. Good on them.

pres589 (djronnebaum)
pres589 (djronnebaum) UltimaDork
3/23/22 1:54 p.m.

I think Curtis has postive comments and suggestions to share about that engine.  Didn't know they made any of those with a diesel. 

accordionfolder
accordionfolder SuperDork
3/23/22 1:59 p.m.

In reply to pres589 (djronnebaum) :

Ah, I only have he-said, she-said kinda stuff, would love to know more. 

03Panther
03Panther UberDork
3/24/22 11:49 p.m.
accordionfolder said:

I was under the impression that the 6.5 diesel isn't a well-loved creature? 

Compared to the bragging rights/hp wars of todays diesel pickups the 6.2/6.5's are NOT fast. But they were designed in the days of bad gas and the need for mpg. Took a while to work out the mechanical injection pump gremlins, but lots of support these days. 
I know a guy that has them in all his farm trucks. Tow well (slowly), and do not have enough power to break other stuff! Loves 'em. 

81cpcamaro
81cpcamaro SuperDork
3/24/22 11:50 p.m.

I had a 93 Silverado 6.5L Turbo Diesel, not bad at all. Just don't expect it to make power like newer diesels do.  MPG was good, about 20 combined driving. 

AngryCorvair (Forum Supporter)
AngryCorvair (Forum Supporter) GRM+ Memberand MegaDork
3/25/22 8:16 a.m.

Confirmed rust-free in MI as well

Curtis73 (Forum Supporter)
Curtis73 (Forum Supporter) GRM+ Memberand MegaDork
3/25/22 4:52 p.m.
pres589 (djronnebaum) said:

I think Curtis has postive comments and suggestions to share about that engine.  Didn't know they made any of those with a diesel. 

Curtis does!

The 6.5TD was a Detroit design, so one might assume it's a beefy thing... and they would be right.  It was designed to be a direct bolt-in for a BBC (and therefore also an SBC except in engine bays where it would be a tight fit.)  They were offered in the Blazer, although not too many people took that option.  You can always tell a GMT400 with the diesel by the two air vents cut in the front bumper.... unless the bumper was swapped, of course.

They have plenty of shortcomings by today's standards.  They are IDI, so they won't make a ton of power without a ton of black clouds, but if you're looking for something in the sub-300 hp/500tq range, they are ridiculously bulletproof.  Many people are quick to mention the PCM failures which was A) easily solved by relocating the PCM away from heat, and B) not nearly as common as the internet would suggest.  Back in the day, the aftermarket sold a $40 bracket kit to relocate the PCM.

Major upsides include one of the best in the MPG wars.  Mine with 4.10s in a crew cab long bed 4x4 consistently got 22 empty and sometimes as much as 24mpg.  They are also pretty quiet and smooth.  They can also pretty easily spin to higher RPMs which makes power increases that much easier.  I used mine to tow 10k lbs when I full-timed in an RV and I never met a mountain that it couldn't top at the speed limit.

I also had one in a P30 step van with 550k on it and aside from burning a little oil it just kept going forever.  They'll never make a lot of power and they're old-school IDI, but what a workhorse.

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