Cummins to Chevy radiator help - Competition Diesel.Com

BCH · 11-12-2017, 09:11 AM

Looking for anyone who has swapped a Cummins in a square body Chevy and used the Chevy radiator. I'm assuming I'll have to fab a hard line and connect with hose at the engine and at the radiator to make the reduction in size but maybe I'm missing an easier (better) way to do it? Any help would be appreciated.

Signature600 · 11-12-2017, 09:41 AM

That's what we did.

Chris

BCH · 11-12-2017, 03:26 PM

Would you happen to have any pictures of your setup Signature600? What type of piping did you use?

R1raptor · 11-12-2017, 05:06 PM

I've spliced two different size hoses with a exhaust reducer on mine no problem in 5 plus years.

K204DR · 11-12-2017, 05:54 PM

I used a 90 degree weld el that matched the cummins motor,with a straight hose between the two, and welded a smaller piece in the other end, and then used a 45 hose to the chevy radiator.

BCH · 11-12-2017, 09:50 PM

Thanks for the responses. Hopefully I can piece something decent together!

87Chummins · 01-22-2018, 09:12 PM

I used a stock upper hose for a second gen (trimmed down the length on both ends) on one of mine. I did have to make a "bushing" out of a smaller hose for the neck on the radiator as the outlet is smaller than the ID of the hose.

11-12-2017, 09:11 AM	#1
BCH Name: BCH Title: Green Behind the Ears Status: Not Here Join Date: Nov 2015 Member`s Gallery Posts: 37	Cummins to Chevy radiator help Looking for anyone who has swapped a Cummins in a square body Chevy and used the Chevy radiator. I'm assuming I'll have to fab a hard line and connect with hose at the engine and at the radiator to make the reduction in size but maybe I'm missing an easier (better) way to do it? Any help would be appreciated.

11-12-2017, 09:41 AM	#2
Signature600 Name: Signature600 Title: THA MAN! Status: Not Here Join Date: Aug 2006 Location: Jeffersonville, Ohio Member`s Gallery Posts: 11,975	That's what we did. Chris __________________ THANKS TO: Tim Barber @ TRE Diesel Jeff Mumau @ Mumau Diesel Service Rip @ Source Automotive Don Thuren @ ThurenFab Suspension Columbus Diesel Supply

11-12-2017, 05:06 PM	#4
R1raptor Name: R1raptor Title: Diesel Enthusiast Status: Not Here Join Date: Nov 2011 Location: North florida Member`s Gallery Posts: 127	I've spliced two different size hoses with a exhaust reducer on mine no problem in 5 plus years. __________________ 93 chevy 3500 : 215hp p-pump, 5sp, 19, afc tuned ,plate delete , 3.54 d80 , slipping clutch. 83 chevy 3500 : 215 hp p-pump,5sp,19,afc tuned,plate delete,rack plug, valair ceramic single,3.42 14b, Vintage air, in need of twins.

11-12-2017, 05:54 PM	#5
K204DR Name: K204DR Title: I'm the Driver Status: Not Here Join Date: Jun 2008 Location: TN Member`s Gallery Posts: 971	I used a 90 degree weld el that matched the cummins motor,with a straight hose between the two, and welded a smaller piece in the other end, and then used a 45 hose to the chevy radiator. __________________ 88 Chevy crewcab 6bt nv4500 valair clutch

01-22-2018, 09:12 PM	#7
87Chummins Name: 87Chummins Title: Busted Knuckles Status: Not Here Join Date: Jan 2012 Location: NW Arkansas Member`s Gallery Posts: 129	I used a stock upper hose for a second gen (trimmed down the length on both ends) on one of mine. I did have to make a "bushing" out of a smaller hose for the neck on the radiator as the outlet is smaller than the ID of the hose. __________________ 86' Chevy military 1-ton VE'd, 5 speed, stock, and daily driven 87' Chevy 3/4 ton p-pump benched, steed speed, 72/83/.90, Hamilton cam n valvetrain, ARP, Valair dd, and a 5 speed that needs dumped! 88' Chevy CC Dually with 6.7..currently under the knife

11-12-2017, 03:26 PM	#3
BCH Name: BCH Title: Green Behind the Ears Status: Not Here Join Date: Nov 2015 Member`s Gallery Posts: 37	Would you happen to have any pictures of your setup Signature600? What type of piping did you use?

11-12-2017, 09:50 PM	#6
BCH Name: BCH Title: Green Behind the Ears Status: Not Here Join Date: Nov 2015 Member`s Gallery Posts: 37	Thanks for the responses. Hopefully I can piece something decent together!