Older 7.3 Deisel vs. Newer Ford Engines
I have a 94 Ford F250 4wd 7.3 diesel, Which I have pulling our 30' Newmar 5er for the last 5 years. The wife is wanting a newer truck wheather it be diesel or gas. I want to hang onto the work horse t...
Forum Discussion
Willcamp4 wrote:
I feel I have to wade in here as I have a 2000 F-250 with the 7.3 and Automatic. When I started towing heavier it was clear the tranny started developing issues. When I chipped it the engine did in the torque converter almost immediately, but it was fun while it lasted as it would spin the tires in second gear in "race" setting. I took it to a local transmission shop that specializes in the Ford transmission buildup and they did just that.
Since then I have driven it about 100,000 miles with no transmission issues, much of it towing my fifth wheel that weighs in at around 12,000 lbs., depending on what I have loaded. I have also added a B&M transmission pan that has finned cooling and larger fluid capacity. I have towed in hills with 100+ degree weather and the temp never has gotten above about 185. Pulling hills in hot weather it usually stays below 165. I still run the stock transmission cooler and fan. I also added a Mag-Hytec differential cover.
I have boosted the power in the engine so it now runs at about the power output equivalent with a 6.4. I can set it to put out enough power to run with a 6.7, but it uses too much gas and develops too much heat (egt) to tow with.
I am really happy with this truck, but I have to say, it isn't nearly as nice as the new trucks, nor does it have all the cool new features. I have been trying to avoid letting my wife see the new ones because I know I will then have to buy one and I'm spoiled by no payments. If I had faith that Ford had solved the longevity issues that come with a new engine I would take the plunge, but right now I'm not yet convinced.
The point is you can't run with the 6.7 because the egt won't let you , if in reality it would in the first place which is doubtful. Maybe elaborate on what you have done to the 7.3 that you think it can run with the new 6.7. I have done a fair amount to mine tuner exhaust etc, and it will not stay with a 6.7 towing.
Never had a problem with my stock transmission ,and I tow 12K , but as I have said I have had a 6.0 transmission cooler since day one towing heavy, transmission is as solid as when new.
