diesel info

upnover

upnover

Grumpy, decrepit Old Man
Moderator
Joined
Mar 20, 2005
Location
Morganton NC
I will be the first to admit that I know little about a diesel engine.
I have found a 6 cylinder Cummings engine, non inter cooled. The injection pump has been removed to fix another engine. so it will need at least that.
I am wanting to put it into my hauler. As I understand, it will need two wires going to it. One for the alternator, and one to the fuel shut off.
Will I be able to use the 4 core radiator I now have? will it cool well enough?
I have 4.10 gears, will I need to change these?
It also comes with a dodge 3 speed auto, I assume a 727, from what I have been told they used these in the early models so I am thinking it should be fine.
This is a complete engine and accessories, less the injection pump. Even has AC, I would like to put my York on it somehow, since the hauler has AC and OBA
With this engine and it being a turbo I know I will need to rework my exhaust.
What I have now is a sweet running 454, carborated engine with a 465 4 speed. I guess I could sell these to offset the cost. Any ideas as to what these would be worth. Not sure of miles, but runs great!
Also not sure of difference in weight of the combos, would front suspension need to be improved?
TIA
 
Something else to think about is that your goin from a V style engine to a inline 6.Will there be enuf clearance in the front for a rad/fan and in the rear for the firewall and doghouse.
 
assuming it is a 5.9l Cummins, it will fit in the engine compartment. The frnt suspension will deff need to be upgraded, as the engine weighs ~500lbs more than your 454.

whitneyj on here has an 82 chevy with a 6bt in it. while he didnt put the motor in, be may be able to help you with pictures and fitment things.
 
Chip,
1) There is no G...its Cummins :D
2) IN STOCK FORM, there is not a tremendous power difference between the 454 and the stock ISB.
3) I believe assuming its an iron head 454 so are looking at 650lbs extra on the ISB
4)Just so you are aware, that is (depending on model) a 500-1200 IP right?
5) You will hate that tranny for your usage in my opinion. You are probably looking around a 65 mph top speed and thats at screaming rpms
6) It should ft as that is essentially the same truck Chase did the CTD swap in a year or so back.
 
It's a ve pump... Pensacola Diesel is $575 exchanged....
 
Could he just go with a P pump?
 
He would have to change the timing cover and get a different pump. IMO not worth it since he is not wanting to turn this motor up alot....
 
SkyHiK5 said:
5) You will hate that tranny for your usage in my opinion. You are probably looking around a 65 mph top speed and thats at screaming rpms
Click to expand...

Ditto! Without some form of OD, you'll see negligible (if any) MPG gains.


snappy said:
It's a ve pump... Pensacola Diesel is $575 exchanged....
Click to expand...

Correct!

Chip, sounds like you're wanting a bit of MPG gain or wanting to ditch the clutch?
After finding out how weak the 12V Cummins + auto really is (BTDT), I recommend:
  • Call Yager for "the talk" :D
  • If cheap enough, buy the Cummins, and turn a small profit
  • Use that profit to fund a TBI swap & OD rower (if not wanting to ditch the clutch) or 4L80 install...
 
For highway hauling, you are going to want a higher gear in the rear end plus an overdrive transmission with that Cummins engine. Keep in mind that the redline for that motor is probably about 3,200rpm.

Assuming the rear tires on your hauler are about 31" in diameter, and the 727 is a non-lock up torque converter (not exactly 1:1 in Drive), here are the rpm's that motor would be turning with the 4.10 gear:

3110-3260 rpms at 60mph
3630-3800 rpms at 70mph
4150-4347 rpms at 80mph

I am assuming you have a 14 bolt FF under the hauler. I don't think they offer anything higher than a 3.73 ratio for that axle. Switching the gears out to 3.73 would give you the following:

2830-2970 rpms at 60mph
3300-3460 rpms at 70mph
3780-3950 rpms at 80mph

Ultimately, I think you are going to want an overdrive manual transmission like an NV4500 combined with the 3.73 rear gear ratio. Doing that would net you the following:

1970 rpms at 60mph
2300 rpms at 70mph
2600 rpms at 80mph

If you did the NV4500 swap and left the 4.10 gear, you would have the following:

2160 rpms at 60 mph
2520 rpms at 70 mph
2890 rmps at 80 mph

John Thomas had that above exact setup (NV4500 with 4.10) in his white Dodge when he first bought it, and still wasn't happy with it, so we swapped the rear ends between his black and white Dodge duallies to get the 3.55 ratio in the white Dodge that he does all of his highway hauling with.
 
Firetoy's buddy put this motor in and didn't do a bad job. There is quite a bit of work that needs to happen to fit that sucker in there-primarily the engine crossmember.

There wasn't enough support in the truck I got-knew it was a project not butthurt and I'm not badmouthing anyone-so the front frame rails started / \ I boxed the entire rear frame in and added 3 tubular crossmembers to the rear and when I pull the cab will be doing the same to the front.

The P/S of the engine had to be tilted up to clear the starter, and it still involved some trimming.

It's very close to the D60 up front. At full bump I have less than an inch to play with.

I have an SM465 behind it with 4.56 and 37's, and it already starts to scream at 40 mph. I'll be getting a gear vendor's overdrive unit to correct that as I still don't think the NV4500 or the Getrag-whatever the heck- is a good alternative to towing at 80 mph.

There's all sorts of cheap stuff to do to the 6bt to boost the power a bit, but EGT's get stupid high, stupid quick without upgrading the wheel on the turbo and adding an intercooler-they're everywhere on Ebay, cheap, and should fit well behind the grill in front of the radiator.

I can get you any pics you need if you're interested.
 
whitneyj said:
I'll be getting a gear vendor's overdrive unit to correct that as I still don't think the NV4500 or the Getrag-whatever the heck- is a good alternative to towing at 80 mph.
Click to expand...
Be aware that the GV units aren't known for standing up to the tq & hp of a turned up motor. That could become a very shitty situation very quickly. Also, I pull about 2300rpms at
80mph with my 3.55/24v/nv4500, running anywhere from 100-220hp over stock at any given time with zero issues in 8yrs.

Sorry for the derail Chip but there's some info for ya!
 
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