Shops, Barns, Varmints, and Trucks - 1993 GMC 3500 4WD 6.5 diesel

Print Page | Close Window

1993 GMC 3500 4WD 6.5 diesel

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Shops, Barns, Varmints, and Trucks
Forum Description: anything you want to talk about except politics
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=184151
Printed Date: 26 Jun 2024 at 11:15am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 1993 GMC 3500 4WD 6.5 diesel

Posted By: JoeO(CMO)
Subject: 1993 GMC 3500 4WD 6.5 diesel
Date Posted: 25 Oct 2021 at 3:37pm

Anyone have info on this engine, good-run?

Replies:

Posted By: Calvin Schmidt
Date Posted: 25 Oct 2021 at 7:39pm

Had a 94 1500. Had several injector pumps. Not a power house compared to the new ones.

2500 and 3500 were much better with less emission crap. Son-in-law had a 96 with 300,000 miles International took over that engine and produced them for the military Hummer H1. Replacement blocks have IH cast in. Was told that the IH version was very good but not real powerful.

-------------
Nothing is impossible if it is properly financed

Posted By: Boss Man
Date Posted: 25 Oct 2021 at 7:51pm

Dont remember if it was the 6.2 or 6.5 that you needed to change the glow plugs every year so they didn't rot off and require the heads removed to replace. If memory serves the core buyers said they both like to crack the blocks around the main journals. Injection pumps were and issue on them all so

Posted By: Dakota Dave
Date Posted: 25 Oct 2021 at 8:15pm

I have a 95 with the 6.5 turbo. Good truck easy on fuel starts even in the winter. Not a lot of power. The non turbo 3500s we had ran out of power about the time you got to 65 mph. My turbo powered runs out of RPM at 90 it's running at the redline takes a while to get that fast and if windy it'll never get there. I've changed my glow plugs twice. There really not a problem if you change them when it get hard to start. If you continue starting with bad plugs they swell in the head and you'll be removing the head. If you use either you'll be replacing the heads we had a fleet of 60 of them for airforce flight line trucks. They ran 24 hours a day every day. Got drove by every lead foot held to the floor till they force up shift when held in 1st. Never had an drivetrain problem. Just brakes tires and body parts.

Posted By: Dakota Dave
Date Posted: 25 Oct 2021 at 8:20pm

93 should be a mechanical pump so the only week spot in the drive train is the front axle disconnect solenoid. If it goes just upgrade to the much better motor driven one.

Posted By: tomNE
Date Posted: 25 Oct 2021 at 8:29pm

only the uninformed will buy them. do your homework and you will run away from them, not walk!

Posted By: im4racin
Date Posted: 25 Oct 2021 at 9:35pm

The uninformed will tell you to run away. Just use them for the hp they are capable of and they will be just fine.

Posted By: HD6GTOM
Date Posted: 25 Oct 2021 at 10:53pm

I bought a used one that had been a Goodyear tire service truck. I also used it for that. We ran it 300000 + miles and only put brakes and tires on it. It outlasted all 6 fords we had for tire service trucks. As stated not a powerful unit. But it was by far the most dependable tire service truck we owned.

Posted By: shameless dude
Date Posted: 26 Oct 2021 at 9:18pm

our tire service guy too just replaced his ford service trick with a used GMC diesel truck, says it's more dependable than his old one was. i have an '87 burb with the 6.2 in it, was a great motor, over 400,000 miles. also have a '97 GMC with the 6.5 and it too is a great truck, over 300,000 miles on it so far, did lose a pump a few years ago. it's done everything i asked it to do. i don't drive 90 MPH with it. nor do i go much over 65 pulling a load. i'm keeping it.

Posted By: shameless dude
Date Posted: 26 Oct 2021 at 9:19pm

like i tell about everyone that buys anything diesel powered...ram rod it and you'll be walking!