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Welcome to 4BTswaps.com. We are a web site about diesel conversions into all vehicles though we are heavily focused on the famous Cummins 4BT engine.
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Latest Posts From 4btswaps.com

1962 Chevy Big Window
Hey all! I have a 1962 chevy SWB big window that I got for a song (well, really a chainsaw...yes, literally) from my best friend's dad. Kind of a...
Getrag slave questions
Has anyone seen an internal slave set up for the getrag behind the 89-93 dodge cummins? My driver drop tcase is awfully close to the slave bracket...
1967 ford f100
A friend of mine is converting a 1967 f100 to 4x4 and 5speed with a 4bt power plant, I was hoping anyone who has done a similar build could help out...
'71 Ford Bronco with a 4BT!
Well after lots of trolling, questions and confusion I thought I'd show all of you guys what I've been working on. This took me about six months...
Sources for dipstick tube and dipstick
My engine came with a broken dipstick tube and no dipstick. Is cummins my only source? I wouldn't mine either another long one or just a tiny one...
Cummins screwed up,
or one of their vendors. The gear cover gasket is 3914385, used on my Scout 4b 3.9-105, the 3.9-120 and at least the 3.9-130 that I bought it for....
Questn: after sucking air, do I HAVE to bleed all 4 cyls or can I get away w/only 3 ?
After getting air in the fuel lines do I need to bleed all four cylinders, or can I get a start with only bleeding three? Thanks for suffering this...
2003 isuzu NPR HD bullet proofing/mods
I am looking at buying a 2003 Isuzu NPR HD and I was wondering what can be done to bullet proof them , help the mpg and add a little power? It will...
87 f-350 12v Ppump fummins
I am thinking about swapping a 94 12v Ppump into my 87 f350 4x4 that used to have the 460 and c6. Anyone have any info or know people who have done...
New Member with 6v53t
I recently bought my first Detroit, and am currently smiling from ear to ear because I got to hear her run for the first time today on a stand. It...
does my 4bt have to sit level?
We are finally setting our engine mounts in place on our 4bt bronco build and we tacked the driver side in place and went to do the passanger side...
service books
Just purchased another service book. seller has told me the book is marked 6Se266 detroit diesel field service book 24 october 1996 is it...
Columbia,SC
Like the title says, I'm live in Columbia,SC. I've never really done any coversions but I hope to change that soon. Just joined up so I can get to...
Warning;;warning;;warning'';;stay away from;;
Warning;;warning;;warning;;warning;;dont deal with ron's turbo in slc ut;; got ripped off big time by ron's turbo in slc ut;sent my turbo to him in...
93 vs 96 starter location
I'm building a 36 rat rod 1996 cummins 12 valve p pump. I know that the starter location on the 93 is different from the 96... The 93 the starter...