73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => Diesel Engine Discussion => Engine/Drivetrain => Cummins Swaps => Topic started by: Blazin on October 18, 2012, 01:15:36 am

Title: That don't sound like no Chevy motor!
Post by: Blazin on October 18, 2012, 01:15:36 am: While hauling this load of scrap.

(http://i136.photobucket.com/albums/q165/BlazinK30/Misc%20pictures/0331121036.jpg)

(http://i136.photobucket.com/albums/q165/BlazinK30/Misc%20pictures/0331121037.jpg)

I hear while I was waiting to get paid the familiar sound of a Cummins 4BT but all I could see was K20 on the scale!

(http://i136.photobucket.com/albums/q165/BlazinK30/Misc%20pictures/0524121414a.jpg)

(http://i136.photobucket.com/albums/q165/BlazinK30/Misc%20pictures/0524121414.jpg)

(http://i136.photobucket.com/albums/q165/BlazinK30/Misc%20pictures/0524121413.jpg)

A little bit of butchery in the detail dept. But it sounded good, and was mounted pretty decent. Said he was running an NV4500 for a transmission, NP 208, and 3:42 gears. Said he was getting a consistant 28 MPG with an old heavy slide in camper on it. Said it was in the 34 / 36 MPG empty.
Title: Re: That don't sound like no Chevy motor!
Post by: BigHemi353 on October 18, 2012, 04:38:11 am: Oh yeah, Gotta love it! Cant wait too see what Im going to get out of mine as far as fuel economy. I going with a 6bt and in the process of body work as of now. 3.42 gears, 205, nv4500 and 12valve with a P-pump and 100hp sticks. I hoping at least 18-20. Thanks for posting!
Title: Re: That don't sound like no Chevy motor!
Post by: Blazin on October 18, 2012, 07:49:18 am: I want a 12 valve 5.9 in my next wheeling Blazer. 8)
Title: Re: That don't sound like no Chevy motor!
Post by: BigHemi353 on October 18, 2012, 11:43:52 pm: You would be amazed at what those 4bt's can do though. I'd love to have one to put in my dad's 1940 International Pickup but they are mighty salty right now. You can find a low mileage 6bt for half the price of a 4bt!!!
Title: Re: That don't sound like no Chevy motor!
Post by: Blazin on October 19, 2012, 07:05:37 am: I know a guy that has an 84 D100 thats in pretty decent shape with a slant six in it thats kinda tierd. He wants to swap in a a 4BT.
Title: Re: That don't sound like no Chevy motor!
Post by: thirsty on October 19, 2012, 07:27:09 am: I hear a lot of guys liking the 4BT. I'm not a diesel guy. How common are these 4BT's? What do they come in usually?
Title: Re: That don't sound like no Chevy motor!
Post by: BigHemi353 on October 19, 2012, 10:13:58 am: From what I've seen is most commonly in bread trucks and they are mated to either a 5 speed( not sure what kind) or a chevy 400turbo hydramatic. You can also find them in some skidloaders, some kubota equipment and probably alot of other things if you do a little more research. The 4bt is exactly the same as a 6bt but less 2 cylinders but you can get plenty of power out of them.