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-   -   Swapping a 69 Chevy body onto a 97 Cummings chassis (https://67-72chevytrucks.com/vboard/showthread.php?t=690699)

steveperry 12-05-2015 11:56 PM

Swapping a 69 Chevy body onto a 97 Cummings chassis
 
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So I've had a 69 k20 for about ten years and finally got the pieces together to do a Cummins swap... I've scowered the site for some having done this but I'm just seeing people putting the cummins in the Chevy chassis. Has anyone done what I'm talking about? The problem I'm seeing right off hand is the intercooler is going to be too far forward for the fender to fit right. Any help? Here's the trucks I've got to work with

steveperry 12-06-2015 12:04 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
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Don't know how to upload more than one photo, it keeps deleting the second one so here it is

usetheBFH 12-06-2015 12:46 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
It's a tough fit. I did the 12-Valve into a C10 option. You could, being that the Dodge is a '97, get the Non-Intercooler Piping from a '93-Down 6BT and not run an intercooler. That'll let you gain ~3-4 Inches. Also trash the Mechanical fan for a thin Electric one. Tha's good for 2-Inches.

steveperry 12-06-2015 12:55 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
How does that work for not having an inner Cooler? That make the diesel run hotter? I'm new to diesels.

usetheBFH 12-06-2015 01:11 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Depends on how you build and what you're going to do with the engine. The Purpose of an intercooler is to Cool the air coming off the turbo and ultimately keep you EGT's in check. Now this is an extreme case but this guy is ~1,200 HP without an intercooler. http://www.trucktrend.com/cool-truck...s-race-engine/It very much depends on the function of the truck. If your going to do mild tuning and run it down the road you'll be fine without an intercooler. Just get a Pyro Gauge and keep it off the ~1200-1400F for any kind of duration or you'll melt stuff. I have an interccooler on mine and i can hardly get it past 1000F if i BEAT on it.

usetheBFH 12-06-2015 01:15 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Commercial Vehicles and Construction Equipment, Like CASE Equipment, Use Non-Intercooled 12-Valve p-pump engines. That's where you get the parts from.

Bigdav160 12-06-2015 09:43 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
I don't think you can make the Dodge core support work anyway. There are examples in the diesel swap section with the dodge intercooler upside down on the GM core support

steveperry 12-06-2015 11:54 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Quote:

Originally Posted by Bigdav160 (Post 7400249)
I don't think you can make the Dodge core support work anyway. There are examples in the diesel swap section with the dodge intercooler upside down on the GM core support


Do you happen to have a link?

Bigdav160 12-06-2015 12:58 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
It is not on a Dodge chassis but might give you some ideas.

Cummins Suburban

edit, I'm sorry that truck is using a Bank intercooler. I'm sure I've seen others with an OE cooler.

steveperry 12-06-2015 01:46 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
im gonna try and stick with the dodge chassis and put electric fans in it... Hopefully that will give me the length I need for the fenders.

XwalkerX 12-07-2015 12:36 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
i just saw this and thought of this thread.

the owner is 72 Tigger

http://67-72chevytrucks.com/vboard/a...1&d=1289738890

http://67-72chevytrucks.com/vboard/a...1&d=1289738890

http://67-72chevytrucks.com/vboard/a...1&d=1289738890


saw it in this thread

http://67-72chevytrucks.com/vboard/s...91687&page=152

68Stepper 12-07-2015 01:59 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
**Cummins**

72 tigger 12-07-2015 10:19 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
I used the complete 2002 Dodge chassis (shorten the WB by 12 inches). The innercooler & radiator are tight- only about 1/2" clearance between the rad & fan. Built it in 2003 & has been my DD ever since.

71blksuper4x4 12-07-2015 11:55 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
2 Attachment(s)
Z's custom rods built this 69-70 blazer on a shortened Cummins chassis. I believe you can find build pics of it on their Facebook page.

kellyed 12-11-2015 01:30 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Hey 72 tigger, you have the build for your truck on here? That's exactly what I'm looking to do!!

72 tigger 12-11-2015 08:28 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
No, I didn't do a build thread- I didn't even take many pics- sorry. I can try to answer any questions

steveperry 12-12-2015 11:07 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
hey tigger, what is that radiator support out of?

steveperry 12-19-2015 06:24 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
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Started pulling the Cummins apart...how many people have had the dowel pin come out? Cause I pulled the cover off and it literally fell into the bottom of the pan. It had been skipping around on top of the gear and luckily hadn't gotten sucked between the gears to destroy the engine!

steveperry 12-19-2015 06:26 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Guess I'm going to make this a build forum as I make progress, got the dodge cab ditched, the wiring harness out and going to start cleaning up the motor and tranny to see what I'm working with.

bigrigpardo 12-19-2015 06:30 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
god you must be the luckiest guy in the world. they call it the killer dowel pin for a reason. google it good thing you found it it will kill a cummins quick.

steveperry 12-19-2015 06:38 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Quote:

Originally Posted by bigrigpardo (Post 7416143)
god you must be the luckiest guy in the world. they call it the killer dowel pin for a reason. google it good thing you found it it will kill a cummins quick.


Yeah I know, pulled it to install the Kdp kit and there it was. You can see the scoring marks from where it was clanking around in there!

steveperry 12-20-2015 02:56 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
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Can anyone tell me if I need to reinstall the dowel pin? The only thing I can find is that the pin is used for alignment when the timing case is bolted to the block...why would I need to reinstall it? I don't plan on taking the case off so I guess I don't understand the need for it. I did however make a retainer for it, and pushed the pin back in. Just curious I guess if anyone has left it out after ward.

steveperry 12-20-2015 03:00 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Moved the truck out into the driveway to remove the cab. Pretty easy with three helpers. Rolled it back in and let the engine tear down begin!!

garmar 12-20-2015 06:56 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Wow! Glad to see the KDP didn't trash your motor. Interesting build.

steveperry 12-21-2015 12:31 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Not much in the way of progress tonight, have to work on the truck after the kids go to bed but I got the wiring harness stripped off the motor and the brake assembly removed.

steveperry 12-21-2015 12:33 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
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And I've got a question. Does anyone know what this little box does? It's got what look to be vacuum lines coming off of it, can't figure it out. Doesn't help that the guy that I bought the truck from had a bunch of it disassembled before I got it...

Maxxd07 12-21-2015 03:47 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
That valve is for an exhaust brake. Looking at your first picture it looks like there is an air cylinder by your turbo and that would close a flap in the exhaust to slow the engine down during deceleration. I bet there is also a switch on the fuel pump that will only allow power through when the throttle lever is at idle.

Dieselwrencher 12-21-2015 08:59 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Nice project you have going on here. I would try to install the intercooler now rather than not using it. If you plan to keep the engine near stock HP levels and don't plan to tow, than you can get away without one. If not, plan to install one. You have the dodge fan, why not use it? It's more reliable than an electric fan.

steveperry 12-21-2015 09:17 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Quote:

Originally Posted by Dieselwrencher (Post 7418510)
Nice project you have going on here. I would try to install the intercooler now rather than not using it. If you plan to keep the engine near stock HP levels and don't plan to tow, than you can get away without one. If not, plan to install one. You have the dodge fan, why not use it? It's more reliable than an electric fan.

Yeah, I'm going to use the intercooler, going to work on fabbing up the cab mounts on the dodge frame tomorrow and then start getting the front clip on and start the figment process. The only reason I wouldn't use the dodge fan is for clearance issues. The front axle on the dodge is further back than the Chevy so I have to do some playing around with the placement of the cab to make it all work. I'll update as I make progress.

steveperry 12-22-2015 01:55 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Worked on getting that damn p-pump out for the better part of an hour and just couldn't get the inner bolt to break loose. Anyone have any suggestions? Gonna try a universal on it tomorrow, couldn't find mine tonight. But I got the opposite side of the engine stripped down. Going to reassemble after I get everything cleaned up and the gasket kit gets here.

Dieselwrencher 12-22-2015 10:48 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Which inner bolt are you referring to? One of the inner retaining nuts? I use a u-joint type swivel socket and a 12-16" long extension to get to them. It looks like you have some exhaust manifold bolts to extract too. Super fun. Haha

steveperry 12-23-2015 02:03 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Got the p pump off! That was the ticket, the universal, popped right off. And yes....I've got four manifold bolts to extract! But I started degreasing the engine this evening with mineral spirits, hadn't ever heard of it but it works amazingly well to get all that road grime off. And anybody know what that box looking deal is toward the back of the block with what looks to be a coolant line connector coming from it? It was behind the p pump and the hose was broke off of it, wondering what it's for.

Dieselwrencher 12-23-2015 09:03 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
If you're referring to the tan colored piece, that is the tappet cover. The box with the tube coming out of it is the breather. That is the only breather on the engine. There is a packing in there to help seperate oil from excess crankcase pressure as it exits the block. A road draft tube is usually attached there with a spring clamp and it is routed in between the starter and engine block stock. 3/4" hose to be exact. :lol:

steveperry 12-25-2015 02:21 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Got my gasket kit and fass system! Christmas came early!! Time to start resealing this pig and get her put back together! Even got the wife to help strip some of the gunk off the chassis!

steveperry 12-25-2015 04:08 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Here's some before and after of the clean up, looking pretty good I think.

1972RedNeck 12-27-2015 01:02 AM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Subscribed

72 tigger 12-27-2015 06:34 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Tried to get cab mount pics

72 tigger 12-27-2015 06:39 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Rear mount

steveperry 12-27-2015 08:29 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
1 Attachment(s)
Got the old front cab mounts cut off the dodge frame and gonna start measuring for the Chevy cab, should have some fabbing done up by the end of the week! Don't mind the nest of wires there on the transmission...it'll get sorted out eventually. Thanks for the pictures there tigger!

steveperry 12-27-2015 08:58 PM

Re: Swapping a 69 Chevy body onto a 97 Cummings chassis
 
Was just thinking...if the front of this truck is such a tight squeeze with the inter cooler and all, I'm gonna get an extra couple fenders and cut out about four inches in front of the wheel and slice another fender in the same spot. Splice in the extra length, will give me more space out front, line up my fender over my wheel properly, and allow me to keep my cab a little further back. Anyone tried this? Cause I'm thinking this will be just about a perfect fix for the tight squeeze/wheel placement problems.


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