4BT Cummins Diesel

[Sharpe]

Its cool if you buy said 750 pound engine from me. Otherwise, dont do it.

[fbronco86]

Right now i just want one in the Cj for the mileage and i can run cheap farm diesel at home. 750 lbs for the diesel vs 700 for a bigblock and 2x the milage its not that bad and i can work on the damn thing too.

Get a Honda if you want good milage.

[Reckless]

30+ mpg estimated

[sasquatch]

sounds like more trouble than its worth

[Reckless]

I could even run Bio diesel so i will be treading lightly for the hippies.

[Graystroke]

if you put a 4bt in a your heap you will have to locktite every nut an bolt. not the smoothest running engine. power band is narrow so you would have to change up the gearing as well. Mercedes diesel is where it is at. I can rap 4500 rpm on mine runs 3000 rpm at 75mph all day and gets 30 mpg. burns no oil, is quiet, and smooth. mine has 280,000 mi and runs like a champ. mine is rated at 140hp and 200ft/lb.

[Reckless]

but cummins parts are half of what the mercedes diesels are and are easer to obtain parts.

[jerryg79]

but cummins parts are half of what the mercedes diesels are and are easer to obtain parts.

never under any circumstances play the money card when arguing with grayson....you always got ripped off

[sasquatch]

what are you replaceing? a 4.2? try getting a amc 304 which will probably bolt up to what you have. they have plenty of low end power. and why are you worried about mileage when you going to be wheeling? or is this going to stay on the road

[Reckless]

both

[CheapJeep]

Get a 360, it's still an AMC so it'd be a direct bolt in plus the 304 has the heads that everybody tries to upgrade but has to pay big$$ to do so.

[tigweld]

They are found mostly in frito lay trucks and stuff. They have the same bolt pattern as a dodge cummins.

The ones I have seen either had a th-400 or a np465 behind'em (maybe cause they were in chebby box vans), but I couldn't tell if there was a adapter. I thought the the 4bt had a SAE pattern(don't remember which one) due to it being used in many different industrial apps.

[eight]

may even swap in a 350 thats just sitting in the garage.

This would be a dumb idea.

[95discovery]

whys that

[Reckless]

The ones I have seen either had a th-400 or a np465 behind'em (maybe cause they were in chebby box vans), but I couldn't tell if there was a adapter. I thought the the 4bt had a SAE pattern(don't remember which one) due to it being used in many different industrial apps.

It depends on what application it was used in, like you said, they had the TH400 and the 465, but the ones ive worked on had the round cummins bolt pattern.