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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

Intercooler and radiator Q's
I have a 1988 F350 with a 460. I am planning vigorously and I can't for the life of me get a grid answer to my question. What would be a good...
OEM Bolts Vs Supplier's Fasteners
Afternoon all, So this is a bit of an odd question, but I'll think I'll ask it just the same. I'm slowly piecing my core 4bt back together, and...
Isuzu Military Landrovers.
For those in the northern hemisphere, you might be unaware that the Australian Military runs Isuzu 4BD1 and 4BD1T powered landrovers. They are...
Ve pump or P pump?
I am sure this has been covered. I searched could not find it. What are the advantages or disadvantages of each?
4BD2 Swap: Torque Converter?
Swapping 4BD2TC + 4L80E Auto (using Allmaras GM Adapter) + 241C TFer Case into '89 FSJ Grand Wagoneer. Daily driver, not towing, not hauling, not...
16v71 firing order
hey guys i need firing order of detroit 16v71 for some adjustments..
Dt466 into 1985 military version of chevy k30
Does anyone know if I have to relocate the radiator to the front side of the core support? I'm assuming that I will need to install a few inches ( at...
97 5.9 210HP out of Freightliner Value/Problems
Did some trading with a guy (sold my stock h1c off of my 6bt) who has a 97 5.9 out of a Freightliner he pulls his race cars with. It had 70K miles...
4BD1T Fuel Feed/Return Lines
I searched the forum for fuel line suggestions and things were vague. Can someone give me a solid size for the fuel feed and return lines for the...
Fuel pin and govenor spring
I have been looking at a few simple upgrades for my 1990 4bt such as i'm putting a piston lift pump on it now. Ive heard a few good things about...
vacuum pump oil line help.
Hey guys, im trying to figure out what size fitting i need for the oil line on the vacuum/ps pump, and on the block. i have a new line itself on the...
Factory Direct B3.3T from Cummins?
I've heard a few different stories on getting this engine directly from Cummins. Called two different Cummins places and one said yes they do for...
Oops! I may have screwed the pooch...
Hi Folks, I'm in need of some assistance. So, here is my sad tale. I bought a Cummins B3.3T that is in need of a rebuild due to a spun rod...
53 Series Flywheels
A quick question about 53 series flywheels: Will a flywheel from a 6V53 fit a 4-53 (both SAE #2 housings)? Thanks, David
Newbie
Hi I am looking to start a build, BT4 into a 1st Gen Bronco. There is a lot of different post on here. Any help will be appreciated.