Rhinojoe
Inland Empire
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I found a easy quick fix for the old low-hp slow Ford diesel pickups.
Ford Diesel fix
* This post was
edited 07/07/09 03:01pm by Rhinojoe *
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skylos
Issaquah, WA
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I'll happily accept contributions of a truck worth THIRTY GRAND, since that is 'easy' in your book.
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Mopar69
Coal City, IN
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94 7.3 if it's the turbo diesel I think is rated 215 hp, In 97 they were upped to 225 hp and 440 tqe, 99-03 235 hp. all flywheel rated.
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sirdrakejr
Las Vegas, Nevada
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Moved from 5th wheels to tow vehicles.
Frank
RV.net blog
For those of you looking for expert advice, here ya go!
Frank
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Brent and Gina
Arkansas
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skylos wrote:
It would be really cool if the ratings were expressed as graphs for each parameter (weight, tire factors, suspension factors, distribution factors) with a relationship for risk assessment. But I don't have that - heck, I can't even find waht the gvwr for my truck IS - so I'll hedge my bets by making sure my equipment is operating *and feeling* right, get advice from people and hear what they think of what I have to say (even if they don't like hearing it), and pragmatically speaking - in the end with my hands on the wheel - trust my best judgement about how fast it feels I can safely go.
Don't forget that you can increase safety measures with improved shocks, airbags, higher-rated wheel/tire combos, and a tire pressure monitoring system to name a few. Even if in "specs", I'd have these additions for piece of mind. How could someone not? That's my perspective.
Safety minded,
Brent
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ib516
Up here!
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1994 7.3L diesel was 185hp/360tq (non-turbo), or 190hp/388tq with a turbo. Pulling a large 5er, that's all the power it has.
LINK TO SPECS
2010 Cougar 322QBS 5er
2007 Dodge 3500 Megacab, 4x4, 5.9L Cummins Turbo Diesel, 3.73, 48RE auto
Hypertech Max Energy 
PICTURES
Prev Trucks:
2002 Dodge 2500, 4x4, Cummins Turbo Diesel, 3.55, 47RE auto
2001 Dodge 2500, 4x4, 360 gasser, 4.10, 46RE auto
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Dave H M
IL
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I saw some interesting advise on RPM  Until this post I have never heard anyone say to run the R's up to close to computer limitation. My old psd (99) I think has the computer stop the rpm at 3400. It pulls good right around the 2000 mark. If you look at the power curve it drops off at high R's.
In the ten years I have driven mine I don't think I have ever had the R's above 2750. It will go there and above but you will be on the down side of the power curve, so why have it screaming?
On a real long 6% grade pulling the 10K fifth wheel I usualy do about 45 after getting settled into the pull.
If somebody blows by me with a huge exhaust pipe and black smoke wafting out - so what?
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SoCalDesertRider
SanDiego, CA, USA
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BIG RIG GUY wrote:My 95 Powerstroke with 4.23 rear end, pulling a 40 foot four slide fiver, about 16500 up a fairly steep hill, goes into 3rd gear and sits around 60 k or 36 mph. No tach so can't give engine speed. I am thinking my engine is around 225 hp.
Buddies of mine that have upgraded from my era of Powerstroke to 2004 and up, are telling me it is night and day difference. Like double the power.
My truck is paid for, and the extra power to me is not worth the payment.
Your '95 Ford truck with diesel engine either has a 3.55 or 4.10 factory axle ratio if it is an F250 or F350. If it is an F-Superduty (F450), the axle ratio choices were 4.63 and 5.13.
There is no 4.23 axle ratio available, either factory or aftermarket, for either of the 2 axles used in Ford trucks with the Powerstroke diesel in your year.
The axles Ford used then were the Sterling/Visteon 10.25" (F250/350) and the Dana 80 (F-Superduty).
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SoCalDesertRider
SanDiego, CA, USA
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hotpepperkid wrote:skylos wrote:So I have a 7.3L Powerstroke Turbodiesel in my 1994 F250 tug and a 1992 Carriage Commander 34.5' fifth wheel.
I went on a trip from flagstaff to las vegas and back this weekend.
The question is, mathemetically/theoretically, how fast should my truck and trailer be able to climb a 6% grade?
Per my experimental data, third gear at 2K rpm is insufficient to maintain speed, but second gear at 2.8K rpm is able to pull, though engine temperature rises enough to engage the fan.
It feels... slow. Thats about 25-28 mph. Does it really take *that much* power to go up a hill? Do the new trucks have that much MORE power than my estimated 250 horsepower?
(My doors were blown off a couple times by pickups pulling roughly equivalent fivers)
- Skylos
I didnt realize they put turbos on them back then. Im thinking the non turbo 7.3 only had about 170HP my 2000 7.3 had 235 before I chiped it and stock pulling 8K up Vail on I-70 I was in 2nd at between 40 and 45. I can do a 6% in 3rd at 55-60 pulling my old trailer 8K and my new 5er 10K up the same 6% hill doing 55-60 with no problems. I have dino number that put 210HP at the wheels and they thought that was a little low for how Im set up. Im not sure how much you loose between belt and drawbar HP.
hpk
There were 3 diesels available in 1994, the 7.3L IDI non-turbo, the 7.3L IDI Turbo and the 7.3L Powerstroke turbo. The Powerstroke was a mid-year introduction for 1994.
ib516 already posted the hp/torque numbers for 2 of them.
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Hannibal
Gas Station
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DSteiner51 wrote:hotpepperkid wrote:jauguston wrote:Something wrong with the software the dyno is using if they can't give torque on anything that is on the roller.
Jim
There is a wire they clip to and on the 7.3 it all but impossiable to get to. On the 6.0 its on top and in an easy to get to wire loom. Anyway that their story.
hpk
If they can't get torque then there is absolutely NO way they can get Horsepower. Something smells really fishy here.
Chassis dyno's measure horsepower. Horsepower is linear. Torque is multiplied throughout the drive line. There is no way to measure flywheel torque at the rear wheels. It is calculated using measured rear wheel horsepower and engine rpm. You can run your vehicle of any kind on a chassis dyno without hooking up the tach and get hp at road speed. You will not get a torque readout unless you hook up a means of reading rpm.
At the roller, 2000ft/lbs of actual rear wheel torque X 700rpm rear tire speed / 5252= 266hp. In the chassis dyno's computer, if "engine rpm" is known, 266hp X 5252 / 2900rpm = 481ft lbs of flywheel torque.
2000ft/lbs of actual rear wheel torque devided by 4.1 gear ratio = 481~ft/lbs of torque. See the connection?
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ex '95 Cummins,'98 12v Cummins,'01.5 Cummins,'03 Cummins; '05 Hemi
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