Re: Slammed 1966 GMCummins 12v
 

nice stance and keep the update(s) coming ....

Re: Slammed 1966 GMCummins 12v
 

I know how you feel posting a build on this site. Seems the "Projects and Builds" section here is more like a blog for 3 or 4 guys.

Just build your truck and share the stuff you are proud of. I sure am following.

My build thread is basically ignored on this site too.

Re: Slammed 1966 GMCummins 12v
 

Really cool build Slim! Keep the updates coming!

Re: Slammed 1966 GMCummins 12v
 

Thanks guys!!! its starting to get fun here now that im actually building something that looks like a truck. I've never done sheet metal body work before so after the engine and trans are done ill be on a huge learning curve.

Robert i agree with you... and now that i think about it im just as bad as others for not giving feedback. I've been following your thread for while now, you do amazing work. lots of talented people on this site building cool things. theres not much of the full custom crowd in the 60-66 forums I've noticed, nothing like the 67-72 build forums, but oh well its all good.

Re: Slammed 1966 GMCummins 12v
 

We are learning sheet metal as we go ourselves. Greg and I got pretty seriouse when the new floor went in and then we lost our minds and went full one off on the firewall and transmission tunnel. Once we got through that we had enough courage to go ahead and build the front clip.

Best advice I can offer you is be way out front on all the pieces you will need and incorporate them as early as possible to allow you to build them into your truck. Inter coolers and turbo 's have a way of eating valuable real estate then the niceties like AC and properly routed rack and pinions and power steering systems all start fighting for the tiny space you have left. It can be quite maddening if you don't lay it out when the build is still a bare frame.

One thing I did invest in was a top shelf MIG that allowed me to run .023" wire in it. That sure makes welding and patching tin much easier.


Just keep on keeping on.

Re: Slammed 1966 GMCummins 12v
 

Awesome work man! I am very passionate about these motors and this gen or GM truck. I love to see the work that goes on here on this site, keeps me inspired. Keep the updates coming in watching. I’m wondering where I’m going to get the space for my ac condenser and a bunch of other items under the hood and I’m sticking with the old dodge ride height! I don’t know where you guys and your slammed rigs are going to fit anything hahaha. In hindsight I think I would have done completely custom inner fenders

Re: Slammed 1966 GMCummins 12v
 

thanks man, the condensor will be no problem, im putting a smaller one in front of the radiator, everything els is going under the dash. but.... i say it should be no problem cause i don't think it will, haha so that means it most likely will. the inner fenders i went with will give me a ton of space to hide those massive wheels and put most my hoses and wires inside them too. nothing better than a clean engine bay.

Re: Slammed 1966 GMCummins 12v
 

Had to chop 2” out of the oil pan so it doesn’t drag the ground when slammed. I was dreading this obstical but it was actually very straight forward. Now I just have to cut a section out of the pick up tube.

Re: Slammed 1966 GMCummins 12v
 

My builds get ignored alot to. Probably cause I didn't do a 350 small block that's been done by 3/4 of the people on this sight. lol Very thankful for the faithful followers that have always checked in though. :chevy:
In for this build cause Cummins. :metal:
Closest I have to it is a 1999 Dodge 2500 with a 24v 5.9 and 5 speed. My daily driver currently and loving every minute of it. Straight piped, edge tuner, upgrade intake elbow, and a/f kit. Leveling kit and sitting on 35's.

Re: Slammed 1966 GMCummins 12v
 

Just found this and am following along.

Re: Slammed 1966 GMCummins 12v
 

Finished the motor mounts, what a pain they were. Glad it’s over. Also welded the oil pan back up and checked for leaks. One leak that needed fixed but other than that it held some slightly dirty mineral spirits for 24 hours without a drop. Now I have to install a drain plug.

Re: Slammed 1966 GMCummins 12v
 

Aired out and full of air, all the way up I got about 11” of clearance from the bottom of the chassis. So I should be good to pick my perfect ride height. I’m really hoping the weight of the truck slams it a bit more than it is aired out. There’s another inch there which is perfect. I don’t want it directly on the ground in case of a air failure while driving (which I’ve had with my Lincoln) it’s nice to be able to steer it and load it on a flat bed if need be.

Re: Slammed 1966 GMCummins 12v
 

For those keeping score, when I bought the Cummins it came with a 727 torqflight trans (3 speed non lock up converter) which wasn’t going to cut it for me, so I searched and searched for a 2 wheel drive 47rh from a 95 Cummins. Fairly rare item up here in Canada since everything is always 4 wheel drive. I’ll be doing a full rebuild and some slight mods to this in case I throw some power at it down the road.

Re: Slammed 1966 GMCummins 12v
 

Wire wheeled the block after it came back from the machine shop, full rotating assembly is ready to roll. I think I’ll start the rebuild next weekend.

Re: Slammed 1966 GMCummins 12v
 

So, now that I’m at this point I’ll ask for some advice. The truck will be the OG patina (silver) it already is, interior colour probably gun metal grey or black, engine bay will also be gun metal grey or black soooo what colour should these guys be. The block will be black and these pieces here will be my only source of colour if any.

Your looking at the 6 rocker covers, turbo and intake tube

What you guys think???

Re: Slammed 1966 GMCummins 12v
 

Chevy orange?
Are you concerned about the smaller capacity of oil the pan now holds?

Re: Slammed 1966 GMCummins 12v
 

I’ve never thought of Chevy orange. Kinda of a oxymoron but I kinda like it too.

As for the oil pan, I measured the volume I took out by filling the cut off piece with water. I’ll be loosing 1.5 litres. But I will have the pick up tube half inch closer to the bottom of the pan than stock sooooo, I’m guessing I’ll only be out about .5 litres/quarts for you Americans when it’s all said and done. So I’m sure I’ll be able to “over fill” the capacity buy half a litre and not notice any difference. This isn’t a high performance build so sucking the pan dry “shouldn’t” be a problem.

Re: Slammed 1966 GMCummins 12v
 

also i should have mentioned, the factory capacity is 12 quarts/liters so at most loosing half or a full quart shouldn't be a problem........ i hope lol


my buddy did mention if its to much of a lose an axillery oil tank coming off the side of the pan can be added, i hope it doesn't come to that but it is an option. i have the room.

Re: Slammed 1966 GMCummins 12v
 

You dont want to overfill the pan and have the crank spinning in the oil.
Doesn't sound like, at 12L capacity, that you will be missing too much oil from the factory design.

Re: Slammed 1966 GMCummins 12v
 

Beauty! You should definitely get those engine parts in the Cummins red! That’s what I would suggest. Good looking work! Keep at it

Re: Slammed 1966 GMCummins 12v
 

ya you're right, we will see i guess. ill have to take it slow, if only i could stick your head in there while its running to see how much im working with haha

Re: Slammed 1966 GMCummins 12v
 

you know, I've been told from a few people to do it in the cummins red. i guess what it will come down to is what colour of powder the powder coaters have.

Re: Slammed 1966 GMCummins 12v
 

Started the motor today, cleaning and cleaning and cleaning and...... you get the rest. This is a stock rebuild so I took out the trusty plasti-gauge to check clearances. Nothing to crazy here, stock new bearings/seals rebuild, new turbo cartridge, reman injection pump. Only thing that’s going over board is the injectors. They’re big, lots of black smoke will happen.

Re: Slammed 1966 GMCummins 12v
 

DAP injectors, 7x.016. :metal:

Re: Slammed 1966 GMCummins 12v
 

Following.

Re: Slammed 1966 GMCummins 12v
 

Fresh cartridge for the turbo, the one that came with it was damaged so a new one was needed. The idiot (previous owner) put a ratchet strap hook in the comp side and chipped 3 fins.

Re: Slammed 1966 GMCummins 12v
 

KDP (killer dowl pin) mod was done. For anyone who knows anything about these 12 valves is they will run forever, providing the dowl pin doesn’t fall out and destroy everything. I made this myself (25 minutes of work) or you can buy the kit for $80.

Re: Slammed 1966 GMCummins 12v
 

Motor is getting there, I’m gonna get it running and make sure there isn’t any leaks or anything before I paint it. New air filter fits like a glove. I’ll hit up the hardware store tomorrow and grab some metric bolts and NPT plugs to finish some things up. I’m not a big fan of the felpro blue rubbers so I’ll have to track down some black ones to change them out.

Re: Slammed 1966 GMCummins 12v
 

Man!! Cleaning the old paint and crap off these injector lines was a pain. Took me about 2 hours to clean this set. Still got more to go plus another set of 3.

Building an old truck is 70% cleaning/stripping all the paint and old crap off of the stuff your re using.

Re: Slammed 1966 GMCummins 12v
 

Looks great slim.
Yes I too have been guilty of not providing feedback to other builds, but it's what we do I guess. Continue on with the updates we are all watching.

Re: Slammed 1966 GMCummins 12v
 

Looking good Slim, cant wait to see that engine all painted!

Re: Slammed 1966 GMCummins 12v
 

Back at it guys, took some time off for a winter vacation. My wife and I took a Caribbean cruise for our honey moon. It was a blast. The motor is completely back together ready for the first fire. Just need some fluids. I had to notch the front rail to clear the AC compressor. CanÂ’t wait to hear this thing run.

Re: Slammed 1966 GMCummins 12v
 

Motor runs good, fired right up after priming the lines. It’s kinda on the back burner for now. I picked up a new blower kit for my Lincoln so I’ll be working on getting it ready for the summer for now.

Last summer I had a crazy brain fart and sold my blower set-up to only find out that I needed it back lol. I ditched the 2” blower spacer and added a shorty crank trigger distributor. Can’t wait to get it back running.

Re: Slammed 1966 GMCummins 12v
 

Chassis looks great. I have always appreciated people doing it on their own (not to knock the people who buy kits).

Re: Slammed 1966 GMCummins 12v
 

thanks man, when i started this build i could have just called some major companies and had them ship me all the parts i wanted. but i didn't want another truck at the show that was just a bolt together high dollar truck. i wanted something i can say i built and I'm proud of. sure when i part ways with it, it won't be worth what a full Porter built chassis or whatever is, but at least i can say i did it myself with the tools i own. I've learned a lot and i keep learning from this build. can't wait to keep going on it.

Re: Slammed 1966 GMCummins 12v
 

hey guys, still plugging away on this rusty junker... my lincoln has had me wrapped up doing shows this summer but im still picking away at the truck, I've got most of the drivers side floors all welded in, last month i bought a 2WD 2000 sierra 1500, why? i don't know, it was a good deal so now i have a 5.3 with a 2WD 4L60E trans which will be good for another project. also in the truck was a cherry set of SS silverado seats that im going to use in the C10. they aren't my first choice for seats but they are very comfortable, all power and heated so ill learn to like them. once this cab is done i can put it back on the chassis and get to building the rest of the truck.

Re: Slammed 1966 GMCummins 12v
 

Getting there

Re: Slammed 1966 GMCummins 12v
 

So no mods to the firewall or anything to get the Cummins in there? I am having the idea of doing this to a K20 of the same style. I had read that they are a bit long and require some fab work to the firewall.

Re: Slammed 1966 GMCummins 12v
 

i haven't touched anything on the fire wall, i did have to cut out the top of the trans tunnel where the pinch weld is, the 47rh is a bit tall for for it to fit when i Z'ed the frame in the front. if your doing a K20 i doubt you will cut the frame where i did so you'll be fine with clearance. i can post more pics if you want just let me know what you need. other than that the engine mounts and pulley clearance was good up front.

Re: Slammed 1966 GMCummins 12v
 

Just came in...Following!