Mcmopar

Where do you come up with that ?

ccoop769

I came up with that from my head and from what I heard. I am just getting into trucking and these type engines which I do know not much. As of most of my research is done from forums like this. I know everyone has there opionions on everything, and thus was my opionion since i do not have first hand knowledge of that subject. If you could please enlighten me of your opionion of that subject, please inform me, as I would like to learn more and not waste 100k on something that might break down on me in a few years

jkitterman

You do realize the 6.7 in the F650 is completely different from the one in the Dodge trucks when it comes to the ECU, right? Electronic enhancements meant for the Dodge version won't work with the regular Cummins.

ccoop769

To be honest, I havent done that much research when it comes to the 650's. I thought that you could get them with the 6.0/6.4, 5.9/6.7, a choice of maybe 1 or 2 smallest cat motors. And a pick of the tranny liter maybe torqueshit/68re or aisen/most popular was the allyison. I could even be wrong on all that. I didnt know motors were diff, i could believe that the ecu are different. Again, i could start a whole forum of questions on the 650's!!!! I do not wanna ruin this mans thread as he is trying to learn about trannys and holding power as I would.

P.S. I obviously still have lots to learn about trucks!!!!
It should be a fun journy though

$oC@l CTD

Yeah, coop, the ECM that they incorporate into the heavier duty 6.7l trucks (such as the F-650) would pull circles around our trucks. Even the C7 is rated at only 300hp, if I'm not mistaken, but the tq rating is 860lbs...my numbers may be off, but I'm willing to bet that 6.7 is a REAL hoss...and if it's got even CLOSE to the longevity/reliability of the existing 5.9s and 6.7s in these Dodge trucks, you'd be looking at a REAL good combo. I had a little cute woman pull up next to me in a 6.7 F-650 the other day...engine doesn't even sound like ours do...they just sound MEANER...I actually couldn't even hear my truck anymore ...boy I bet she was upset when my jealously left her in a big black cloud of smoke though

t-boe

According to Ford's website the 6.7 Cummins is rated at 325hp and 750 lbft of torque. The CAT is rated at 300hp and 860 lbft of torque. It's available with 5,6 or 7 speed manual transmissions or Allison 2200 thru 3500 series autos. The cool thing is you can get 2 speed rear ends too.

signature600

Skip the CAT UNLESS it's a Common Rail...if it's HEUI, forget about it!

A 330HP CAT C7 CR, and a Super 10 would be awesome.

Chris

cbtumedic

Or you could just buy a 92-95 International w/a dt466 (got a p-pump on them) and a spicer or fuller manual transmission, Bomb it like crazy, do the interior like you want it, or swap a cab of your choice on it. Not have to deal w/emissions or electronics and save a cool 20k in the long run.

D.Wiggs

I was going with a 6.7 Cummins because it was my understanding that the 7.2 CAT had ACERT or something like that that made it nearly impossible to mod.

Now I wonder why Ford rates the 6.7 @ 325/750 when SportChasis rates it @ 325/1000 ?? I want SportChasis's ECM!!!

Anyway, I want the most durable powerhouse I can build and I would LOVE to have an Ultrashift under there, but would be fine with an Allison that could handle the power. My Dad's motorhome had an Allison with the Cummins ISX 14L 600HP bad boy behind it so I know the trannies are out there; just need to know if the 3000 can be built up enough!

Jfaulkner

I know this is a trans discussion but the new C7's are common rail (no HEUI). Acert Cats can be modded the same as the non Acerts. (C13-C15's anyway) I doubt there is anything out yet for the new CR C7's but ts performance, Predator, and Edge had boxes for the 1998-2006 models. However I doubt that there is anything for the 6.7 cummins yet either without the Dodge ECM programming.

Actually it's the other way around. The 5.9 in the dodge is around 325hp but in a medium duty application it's only like 250hp. Same way with the Cat. In the Ford truck you get up to 300 maybe 330hp, but you can get 360hp in an RV.

t-boe

I don't think anyone makes mods for the 6.7l in any chassis other than Dodge. I highly doubt when the 6.7l Smarty comes out that it'll work on the F-650.

$oC@l CTD

Correct, the "light duty" apps have higher HP numbers, but the medium duty apps have SUBSTANTIALLY higher TQ numbers, traditionally. Take a Freightliner for example, equipped with the Detroit MBE 4000...at the flywheel, it's rated at 450hp...but 1650lbs of tq...my truck has 424hp to the WHEELS, but do you think that I can pull the loads that truck can on an every day basis? Or would any of the 600hp guys in here put their engine up against a Volvo D16?

doomgaze

The Cummins that you can get in the Sport Chassis is not the same Cummins thats in the F650. The Cummins in the SportChassis is an ISC series (Rated at 330hp, 1000ft lbs tq). I could not find specific information on the 2008 models, but the Cummins that has always been used in the F650 trucks is the ISB series (which is what we have in our Dodge trucks).

As to the transmission question, I've always been told that the Allison TRV3000 is just the Allison put into the 2500 and 3500 trucks with some beefed up electronics. The standard transmission on the SportChassis is the TRV3000 (mated only to the 300hp/860tq engine)... they tell us to stay away from it if at all possible. If you want a true medium duty transmission you want the Allison TRV3200. In fact, when you go to the high output engines (Mercedes 330/1000 or the Cummins 330/1000) you can only get the TRV3200.

Doctor Detroit

I have to agree with t-boe, the F650 is well into Ford's medium duty commercial class of trucks. Commercial user's rarely play 'hop up' with the fleet. There would not be enough of a market.

The ISC is the next larger class of engine. More cubic inch - more torque.

I assume everyone is aware that Allison has just been sold. GM is only keeping rights for the unit in the Duramax.

duratothemax

Not really sure what you mean by "beefed up electronics". Also...are you sure the name is "TRV3000"? Any allison with "3000" in it has nothing to do with the 1000/2000 transmission. Actually, almost all allisons use the SAME electronics/TCM. Just different programming obviously. If the GVWR is over 26,000lbs or GCWR is over 30,000lbs it is NOT a 1000/2000, because thats all those transmissions are rated for. All allisons are "medium duty", including the 1000/2000. The 1000/2000 are used in plenty of non-GM specific medium duty apps. Just because its the same trans that goes into the 2500/3500 pickups doesnt make it light duty. The cummins ISB goes into dodge 2500/3500 pickups, but does that mean its light duty??

ben