2021 Ram 3500 H.O.
1075 tq and 37,100# towing. Video
Forum Discussion
Undeleted, probably won't handle that much power on a long pull, but deleted is a different story. Not only are you removing two large bottlenecks that trap a lot of heat when deleting, the SCR and DPF, but you also remove a component that is very taxing the cooling system, the EGR cooler, which cools the already hotter than normal exhaust gases.
A lot of people think that the grilles and radiators on these trucks started getting bigger because of the power ratings. This is partially false. The 6.4L PSD did not make much more power than the 6.0L it replaced. Neither did the 6.7L CTD over the 5.9L or the LBZ over the LMM yet the grilles on the trucks started to get larger after 2007. Why, because the emissions equipment created a lot of heat under the hoods of these trucks and larger radiators were needed to cope with this added heat. Especially in trucks without DEF/SCR because they utilized the EGR even more. Removing these system on a truck that was designed to handle them frees up a lot of sustainable power potential if the air is right.
Speaking of Kenworth, I remember when PACCAR, the owner of Kenworth and Peterbilt, was in a lawsuit with Horton fan systems shortly after 07 when class 7-8 trucks required these emissions systems as well. You could not keep a Horton fan clutch on one of these truck longer than six months because the bearing would just explode. I had a lot of pi$$ed of customers because of this.
PACCAR and Horton thought it was a bad bearing supplier so PACCAR switched to Borg-Warner to supply their fan clutches. Lo and behold, they started failing the same way too. It was shortly after this that PACCAR(and all the other makes) figured out that it was all of the extra heat from the emissions systems on these trucks that was causing the bearings to fail. They started making trucks with even larger radiators(similar to what the light HD trucks did) and dual bearing fan clutches to handle the added heat.
A lot of people think that the grilles and radiators on these trucks started getting bigger because of the power ratings. This is partially false. The 6.4L PSD did not make much more power than the 6.0L it replaced. Neither did the 6.7L CTD over the 5.9L or the LBZ over the LMM yet the grilles on the trucks started to get larger after 2007. Why, because the emissions equipment created a lot of heat under the hoods of these trucks and larger radiators were needed to cope with this added heat. Especially in trucks without DEF/SCR because they utilized the EGR even more. Removing these system on a truck that was designed to handle them frees up a lot of sustainable power potential if the air is right.
Speaking of Kenworth, I remember when PACCAR, the owner of Kenworth and Peterbilt, was in a lawsuit with Horton fan systems shortly after 07 when class 7-8 trucks required these emissions systems as well. You could not keep a Horton fan clutch on one of these truck longer than six months because the bearing would just explode. I had a lot of pi$$ed of customers because of this.
PACCAR and Horton thought it was a bad bearing supplier so PACCAR switched to Borg-Warner to supply their fan clutches. Lo and behold, they started failing the same way too. It was shortly after this that PACCAR(and all the other makes) figured out that it was all of the extra heat from the emissions systems on these trucks that was causing the bearings to fail. They started making trucks with even larger radiators(similar to what the light HD trucks did) and dual bearing fan clutches to handle the added heat.
