Cummins Power

[buildin72]

im not sure. i havent gotten this deep into my research. im waiting for the chevycummins.com website to be available. hopefully they will offer some info on the painful wiring. i hate wiring projects!

[porpaintt]

Hey guys I'm building a 73 4door chevy truck and putting a 5.9 24v 2000 238 hp cummins in it . I bought my mount adaptors from Ford cummins. I had to modify the firewall and build new covers,the back of the motor sets in the cab a good 4 inches.I have a nv5600 6spd which I built a new crossmember for and had to move the crossmember back 12 inches.I had the driveshaft modifyed with a 3" tube on the front part and left the 2 1/2 inch in the rear. I putting a gm 14 bolt in it with a 3:73 gear,if that don't work I will put a 3:42 or a 3:21 in it. I want to make a tilt front end for it ,so if you know anyone that has bilt one let me know.I need picts of how it was done.
I'm building a 74 standard cab anmd want to put a 6.2 or 6.5 in it with a 5 speed for my grandson.

[1967k30]

Well guys this project is on hold currently so if anyone is interested in the motor,tranny or t-case PM me.
My brother wants a newer motor{94-98} and he has to get some body work done,reinforce the frame,and powdercoat it . He's also looking to get a daily driver so this may take a while to complete since he doesn't make a lot of $$$$$. It is still going to happen but it'll take a bit longer than planned .

[chevymad]

Just a possible tip for you guys. Never seen a cummins conversion but there is a 71 around here with a detriot in it. To carry the extra weight he strapped a transverse leaf underneath the front crossmember with the ends hooked to the a-arms. Not sure if he made the whole thing up himself or not. But i've seen similar setups on motorhomes. He puts alot of miles on this truck and hasnt had any chassis trouble yet.

This is for the 2wd swappers of course.

[TP from Cntl PA]

Originally Posted by chevymad

Just a possible tip for you guys. Never seen a cummins conversion but there is a 71 around here with a detriot in it. To carry the extra weight he strapped a transverse leaf underneath the front crossmember with the ends hooked to the a-arms. Not sure if he made the whole thing up himself or not. But i've seen similar setups on motorhomes. He puts alot of miles on this truck and hasnt had any chassis trouble yet.

This is for the 2wd swappers of course.

What Detroit did he use? 4-53, 4-71? I wanted to use a Detroit, but going with the Cummins it was cheaper. Sounds like a neat truck though............One thing about the Detroits you can put a REAL Jake brake on them off a larger one(6-71 or bigger), not one of those wimpy exhaust brakes on this other ones that everyone brags up.

The suspension on my 4x2 is pretty close to maxed out in the front end. I planned on just air bagging it, but my have to look into that as I am not crazy about all the extra junk I have to haul to use air bags.

I am going to use a 6-71 Detroit in my next pickup with a few mod's, I'll probably have people swerving off the road infront of me when I am driving it..........I am one of the few whole love hearing a Detroit Scream.

[chevymad]

It's a 4-53. I know they were all supercharged but were they all turbo as well? This has both. It's a pretty tight fit really. Truck has a custom tilt front end made from the original steel. He also used a clark 5spd out of a UPS truck. Still has the stock rear end and front suspension, other then the added leaf. There's alot of other custom stuff including color changing paint. Which is sad because i've never seen the truck washed. It's strictly a work truck. The inside of the bed is all aluminum diamond plate and has a fifth wheel hookup. They filled the inside of the cab with sound absorbing foam too. All the gauges are custom. Yet he put white spoke wagon wheels on it. The guy is just a bit off.

[1967k30]

We set the cab in place for testing clearance and found a major problem. The heater to turbo clearance in 1/2"!!! How do you have a heater with a Cummins??? Otherwise things look good but that needs addressed soon as winter is setting in. I'm also wondering if a 1" body lift will be required to get the nv4500 to bolt up without rubbing on the floor .

[TP from Cntl PA]

Originally Posted by chevymad

It's a 4-53. I know they were all supercharged but were they all turbo as well? This has both. It's a pretty tight fit really. Truck has a custom tilt front end made from the original steel. He also used a clark 5spd out of a UPS truck. Still has the stock rear end and front suspension, other then the added leaf. There's alot of other custom stuff including color changing paint. Which is sad because i've never seen the truck washed. It's strictly a work truck. The inside of the bed is all aluminum diamond plate and has a fifth wheel hookup. They filled the inside of the cab with sound absorbing foam too. All the gauges are custom. Yet he put white spoke wagon wheels on it. The guy is just a bit off.

Sounds like my kind of guy I imagine that little jimmy with both a blower and a turbo really humms............I almost bought a late 70's GMC 3/4 ton with a 4-71. They guy who had it said they haven't found a gooseneck big enough to haul the weight needed to slow it down on a hill............Sadly it was also a 4x2 so I didn't want it.

Need a 4x4.

67K30, The intake/exhaust is opposite on mine compared to a 5.9.........The turbo/intake on mine is on the driverside. Got plenty of clearance.

[VetteVet]

My big question is why is diesel almost a buck a gallon more than regular gasoline here in Michigan? I like diesels too but I wouldn't swap one into a truck and have to pay that much more for fuel.

[TP from Cntl PA]

Originally Posted by VetteVet

My big question is why is diesel almost a buck a gallon more than regular gasoline here in Michigan? I like diesels too but I wouldn't swap one into a truck and have to pay that much more for fuel.

I was told it is partly because of taxes and refinery's having to make different blends of diesel for the winter............Sounds like hog wash but like I said it is what they told me.

I get good fuel mileage with mine, even though, I still run my gas car in the winter as I don't like the hard starting and other issues..............Main reason I put a diesel in was because it was different(Everyone has a small or big block) and the low end torque these engines make is unreal.......I like that in a pickup.

My next one will be a trailer puller, so I'll need the power and reliablity that you really can't get with a gas engine. Not to mention it would be difficult to run a 9 spd Eaton Roadranger behind most gas engines.

[1967k30]

The main reason we are doing it is that the motor was shot and we bought the whole truck w/ the Cummins for just a little more than it would cost to build a 400hp 383 Stroker.We can easily get 350hp out of this Cummins and have way more torque.We also are building a wheelin' truck not a DD'er and diesels wheel great,or at least my 480hp Duramax does .

[TP from Cntl PA]

IMO, Small Blocks are way over-rated for pickup motors................Not to mention the Cummins will go a heck of alot, and I mean a heck of alot more time between rebuilds.

[1967k30]

Well I'm about to start on 2 new crossmembers and hopefully someone will respond that knows about the heater problem.

[milehightoyz]

hey 67k30...looks like an awesome project you got going here, im actually about to tackle this same project, except instead of moving all the dodge stuff over to a chevy chassis, im going to figure out away to just put the chevy body onto the dodge frame and driveline, seems like less headache but we'll see what happens, ill start a build thread as i tear deeper into my project. thanks for the pics, keep up with the great pics and info. ill be watching this thread close.

[jimmydean]

I have considered doing that in my truck, but I think I will get a 4x4 to do that to.