95 12v on a 90 block

[JSchwendinger]

I have just got into Cummins and have a 95 F800 w/ 12v 6BT and FS5306 Trans. I also have a 90 Dodge Aircraft tug w/ 12v as well. The 90 has a few parts missing and the 95 has a bad cylinder (it burns oil bad). My plan is to take the 90 block and put the 95 head and parts on it. Then put everything into a M715.

I have read that it isn't worth the time and effort to swap a P pump onto a a pre 93 12v. Are there any issues that will stop me from using the early block with the later 12v head and parts?



Joel

 

[Shadrach]

I have read that it isn't worth the time and effort to swap a P pump onto a a pre 93 12v. Are there any issues that will stop me from using the early block with the later 12v head and parts?

Joel

That depends on what power level you want. The P pump will generally give you more power than the VE rotary, however if you use the 90 short block you will have pistons and cam designed for lower horsepower. I'd repair the Ford engine and use it, simply because it is newer and rated higher in the hp department. The Dodge is 160 horse and the Ford could be as high as 230 but more likely 190 or 210. Only real way to tell is by ESN. Some of the outside pieces, like the fuel filter setup, is unique to Ford.

What kinda power do you want? Shadrach

 

[JSchwendinger]

Right now I am going to be happy with stock power. I just want to get it on the road and enjoy it for a bit. I would like to go at least 5-600 lbft in the future but know that once I start I may want to go even further.



The current 12v still has the TF727 behind it but I prefer the simplicity and better gearing choices of a 5 or 6 spd manual. I originally was just going to use the 90 12v and get a NV 4500 but after looking around for clutch, clutch cover etc it wasn't going to be cheap and I still have the marginal NV4500.



So I looked into medium duty trucks and found a F800 w/ FS5306 for a good price. Since the engine had a bad cylinder I thought about using both engines to get the newer P-pump and aftercooler so when I did want more power I could go big if I wanted to. The PO said he had a Cummins guy look at it and that it had a bad cylinder and it would cost about 2K to fix the cylinder.



Thought I would give you a little more background info. I guess the best bet would be to fix the bad cylinder in the 95 block.



I am sure fixing the cylinder is pretty involved. I haven't pulled the head yet to look so I need to so how bad it is before I get any further.

 

[SGrubel]

I wont get into the engine there much, but I would take tear the 95 engine down and just see how bad it is, mabey you could get away with honing the cylinder and droppin a piston in it, but if you have to bore it out do all 6 with a complete overhaul and stay with the p-pump. That 6 speed in that ford is a nice transmission, I have one of those behind the cummins in my pickup and absolutly love it. The biggest downside is the size and lack of overdrive, but the second can be changed. I had about 800 in changine some gears and input shaft to make it overdrive, would be more but I didnt change the top cover so now 5th and 6th gears are backwards, but youll get used to it.