89 GMC Cummins conversion

[COS399]

Originally Posted by nekkidhillbilly

i actually like the single lights in the 88-91 trucks dont see many fixed up with that set up

I will probably leave the singles for a little while. My first 1981 C20 had the single lights and I thought about leaving it that way, but once I had to do the lift kit for the cross member clearance the build kind of changed directions. I know some people may think it is actually a Chevrolet because of the Grill and tailgate but it is a GMC. I am looking for a GMC grille and tailgate. And it might be kind of fun to leave the old 6.2 Litre emblem on the tailgate.

[Hankster]

I actually bought a rad support and grill like that for my 86 RCSB c10, it is painted black, you don't see many of them thats why i got it, I think they look good! Oh BTW Nice truck! What size/kind of tires do you plan on running?

[COS399]

Originally Posted by Hankster

I actually bought a rad support and grill like that for my 86 RCSB c10, it is painted black, you don't see many of them thats why i got it, I think they look good! Oh BTW Nice truck! What size/kind of tires do you plan on running?

Not sure yet. If I wouldn't have had to lift it then I would have stuck with the stock tire and wheel combo with the dog dish hubcaps. Now, I am leaning toward 33" or 35"s. Still not sure on the wheels though.

[COS399]

Originally Posted by Hankster

I actually bought a rad support and grill like that for my 86 RCSB c10, it is painted black, you don't see many of them thats why i got it, I think they look good! Oh BTW Nice truck! What size/kind of tires do you plan on running?

Hankster - read your build thread and I hope you are getting better. Thanks for your compliment on my new project truck. I like seeing that a person your age is interested in these trucks instead of something newer that everyone has. Good luck with your build.

A week before I bought this truck I traded a Honda 300EX for a 1978 GMC CCSRW K30 with no motor. Trading is the way to go if you can do it. Oh the guy also threw in an extra front D60 and FF14 rear axle in the deal.

[COS399]

Slow progress in the last week. I got my new TCI deep transmission pan and finally got it installed. In order to drop the old pan I had to remove the cross member and mount. While I was at I went ahead and replaced the mount with a new one. The last two days have been frustrating trying to modify the transfer case shifter lever to work now that the transmission has been moved back 4 1/4" due to the 4L80 being longer than the TH400. After numerous failed attempts and countless hours wasted at trying to make the shifter work in the original location, I finally decided to move the hole in the floorboard over. I am attaching pictures of the before and after pictures of the TC shifter lever. My drive shafts came back from the shop and I got the rear ones installed. I was waiting to finish the TC shift lever done before installing the front shaft.

[COS399]

Well my truck may not be running yet but I think this new valve cover is worth a few extra horsepower.

[COS399]

Well I made some progress with the build, but I am still waiting on my Transmission Cooler. I was given an expected delivery date of 1/20 and when I called them on the 24th I was told that the new expected delivery date is now 1/30. I did however put on the new valve cover, mount the radiator and shroud, connect the transmission linkage, install the new shift lever indicator with the Overdrive, started running the wiring and building the mount for the PCS transmission controller. I am hoping to have it fired up and running in the next two weeks.

[COS399]

I forgot to mention that I had to order a different transmission dip stick and while I was at it ordered a transmission temperature gauge.

[COS399]

Originally Posted by COS399

Well I made some progress with the build, but I am still waiting on my Transmission Cooler. I was given an expected delivery date of 1/20 and when I called them on the 24th I was told that the new expected delivery date is now 1/30.

Well I am no longer waiting on JEGS to send me my transmission cooler. Here is what has transpired in the last 18 days. I ordered the cooler on-line on 1/12 after the web site lead me to believe that the item was in stock and indicating that it would be shipped the next day. On 1/13, I was notified by e-mail that the item was out of stock but the vendor, B D, had an expected shipping date of 1/20. On 1/24, I called up Customer Service for JEGS and they "called the vendor" and was told that the cooler was still being built and the expected shipping date would now be 1/30. Today, I called the CS for JEGS and they again "called the vendor" and were told that it was still being built. So I decided to cancel my order and call Ken Kraus at Autoworld Conversions who was able to track one down right away and it should be up here the first part of next week. I should have just ordered it from Autoworld to begin with since the owners, Ken and Dawna, as well as their staff have been extremely helpful and willing to help me see this project through. Autoworld is where I bought the cross member, motor mounts, transmission controller, adapter plate, flex plate, starter, down pipe and other miscellaneous parts that go along with this type of conversion.

Here is Autoworld Conversions' internet site address in case anyone is interested. www.cumminsdieselrepowers.com

[84 Beast]

Originally Posted by COS399

Well my truck may not be running yet but I think this new valve cover is worth a few extra horsepower.

Looks badass. Where did you get it?

[COS399]

Originally Posted by 84 Beast

Looks badass. Where did you get it?

Thanks. The valve cover came from Jegs $194.00

Originally Posted by 84 Beast

What alternator are you using?

I am running a first gen with an internal regulator. I have been running the same set up in my 88 for the last 10+years with no problems.

[nekkidhillbilly]

Originally Posted by COS399

I will probably leave the singles for a little while. My first 1981 C20 had the single lights and I thought about leaving it that way, but once I had to do the lift kit for the cross member clearance the build kind of changed directions. I know some people may think it is actually a Chevrolet because of the Grill and tailgate but it is a GMC. I am looking for a GMC grille and tailgate. And it might be kind of fun to leave the old 6.2 Litre emblem on the tailgate.

when i do a dmax one prob next year im going to try and find a diesel gate and grill emblem off an old 5.7 olds powered truck if i can. i love the singles in the early 80s trucks never liked the stacked lights as good.