89 GMC Cummins conversion

[Hankster]

Good lookin truck. Thats funny about that grill.. I bought one just like it and its painted black too.

[Dieselwrencher]

It looks really nice. Nice score on the tail gate!

[COS399]

Originally Posted by Hankster

Good lookin truck. Thats funny about that grill.. I bought one just like it and its painted black too.

Originally Posted by Dieselwrencher

It looks really nice. Nice score on the tail gate!

Thanks guys. I am still trying to narrow down the tire/wheel size and style. It's narrowed down to 34 or 35s, 17 or 18s, and classic aluminum M/T or something with some black and machined.

[72MARIO]

The DC2 DICK CEPEKS would loook great on it

[COS399]

Over the last couple of days I extended the rear load level braking assembly. This had to be extended after installing the lift kit. I found a winter grille cover behind the rear seat. This will come in handy living in MT. I am still working on cleaning up and securing all the wires. Lastly, I didn't like the way the coolant overflow hose looked so I drilled a hole in the top of the tank and ran the line through the new opening. In hindsight I should have just left the factory overflow tank mount on the fan shroud.

[COS399]

Here is the latest: welded in the piece of metal that I had previously cut to move the transfer case lever over, scored me another GMC tailgate in really good shape, mounted and hooked up the transmission temperature gauge, and wire loomed the wiring under the hood. Getting closer to having it on the road. I still need my tire and wheels as well as having the exhaust finished.

[COS399]

a few more under hood pics.

[COS399]

Originally Posted by 72MARIO

The DC2 DICK CEPEKS would loook great on it

72 Mario - thanks for the input. It has been a tough decision but I ordered up my tires and wheels today. Wheels will be 18" x 9" and the tires will be Toyo A/Ts 35" by 11.5"

[Dieselwrencher]

It looks very nice and neatly done. Great work!

[COS399]

Originally Posted by Dieselwrencher

It looks very nice and neatly done. Great work!

Thanks Ryan. Well we took it out in the snow last night and had a little fun with it. I am still impressed with how it handles and runs. The heater works good in sub zero temperatures.

I didn't mention it previously but I was worried about fan to radiator clearance and so I used the 1st generation fan clutch and fan hub. The fan itself is out of the 24valve and I raised the shroud just a bit and of course had to shift it over about 1". It seems to work but only time will tell.

[6BT 56]

Nicely done . It truely looks like it came that way. I can only imagine what would have happined if GM had made a deal with cummins in the good old days , instead of dodge

Looing forward to seeing it with new sneakers .

[COS399]

Originally Posted by 6BT 56

Nicely done . It truely looks like it came that way. I can only imagine what would have happined if GM had made a deal with cummins in the good old days , instead of dodge

Looing forward to seeing it with new sneakers .

6BT 56 - Thanks for compliment. I was shooting for a clean and somewhat factory look. Being able to see what members are doing on this forum and being close to Ken (Autoworld conversions) helped greatly. I want to run it "as is" a while and then go back and remove any wiring under the hood that is not hooked up to anything. My plans are to clean up the wiring under the hood of my '88 Chevy CC 12 valve conversion this summer, after a break of course.

[6BT 56]

I think its the red rockercover , it just makes everything else blend into the red firewall.

Got any pics of the other converted truck ? Keep up the good work

[COS399]

This is the only one that I have available right now. I was going to take a picture of my 88 next to my 89 and then again after the new sneakers get put on it.

[Dieselwrencher]

That's a great looking truck too. Those wheels are really nice. It should look big pimpin.

[6BT 56]

Thats a good looken bed on that truck . All the cool square trucks rotted to death around here long ago. I go for a trip to the sunny south and Im amaised . Im having conversations in the 7/11 parking lot with guys with 20 year old trucks and complementing them . They look at me like im from the moon . Lol, Just a truck to them .
You said that truck has a 1st gen 5.9 and getrag? Thats the same combo I put in my 56 . Sure was straight froward .

[COS399]

Thanks guys. Having one of these heavy beds is the only way to go on a dually. Yes, it has 1st gen motor and Getrag transmission. I had it put in 14 years ago and only cost me $7k back then. I had the 4.10s removed and dropped in 3.55s about 8 years ago.

[COS399]

The $7000 cost was: 3,500 for the wrecked 93 donor truck, 3,000 for labor, and 500 for additional parts. Of course he couldn't put the 1st gen intercooler in so I had Ken do it in 2005 or so.

[COS399]

I started my truck yesterday morning and when I started to turn the wheel I noticed that the steering was firm, it then loosened up and felt normal. After parking it and shutting it off I noticed the power steering fluid must have had air again and overflowed out of the reservoir. Ken thought that it may have gotten a little low and sucked air.

Has anyone else had this problem and if so what is the solution?

[Dieselwrencher]

I've had this happen after a fresh build and I came up with it must be from air pockets in the system working their way out. I've had some trucks that were an utter pita to bleed out before and others that were cake.

[collect t/as]

[COS399]

6BT 56 - the picture above is of my '88 12valve that my brother posted. My plans are to clean up the wiring and such later this year or at the least a good winter project.

[COS399]

On the firewall you can see the external voltage regulator that I merely unplugged after putting in the internal VR. This picture is about 3 years old and I have since removed it from the firewall. The mechanic that did this install back in 2000 never even tried to reduce the wiring under the hood.

Getting the exhaust system finished up later this week as well.

[COS399]

You can never have too many trucks.

[COS399]

Out with the old,