Need more HP
#1
03-14-2018, 01:53 AM
Join Date: Mar 2018
Posts: 2
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#3
03-14-2018, 11:29 AM
Banned
#4
03-14-2018, 12:32 PM
When I looked into boosting our 4.7 a bit, the research came back indicating not many options for the 4.7 and of those that do exist the gains are marginal. Conclusion was if you like to wrench and tweak and troubleshoot alot as well as have deep money pockets you can do a few things with less than impressive results. The decision over here is the time tested addage: there is no replacement for displacement. On a 2003 Ram, if you really need to have more than the 4.7 has to offer then the informed choice is to swap engine or swap truck.
That said, there are a a few things that can be done to a Ram to make the 4.7 seem more perky, but at the expense of something else. Before you go there you really need to consider the dominant uses of the truck. For example if you are around town or back roads most of the time at lower speeds (<50mph) then a differential gearing change can improve the torque to the wheels significantly. The 4.7 will seem more powerful, but it is not. The vehicle is just geared lower. The trade off is much higher rpm out on the highway and dropped fuel economy (not that there is much on a 4.7 ram in the first place!). You could put a performance exhaust on. That will improve flow a bit. The 4.7 will seem more powerful, but it is not. It just sounds better and louder ... like a scrappy little dog with a big bark, it is still a little dog. If you truly want more power and still like to go fast, then you must swap engine or swap truck.
The 4.7 is a solid reliable long lived engine. Also easy to troubleshoot and to work on. Out of the box it is already an optimized and finely tuned package. Love it. However, as for modification options and turning them into fire breathing dragons ... that the 4.7 is not.
There will be comments that pop in here that will say how much more is possible doing this or that. Again, that's great if you are into doing a lot of wrenching tweaking and a wad of cash to spend on comparatively meager results. It just isn't the wisest path to go down on this truck -- imho. Swap engine or swap truck.
That said, there are a a few things that can be done to a Ram to make the 4.7 seem more perky, but at the expense of something else. Before you go there you really need to consider the dominant uses of the truck. For example if you are around town or back roads most of the time at lower speeds (<50mph) then a differential gearing change can improve the torque to the wheels significantly. The 4.7 will seem more powerful, but it is not. The vehicle is just geared lower. The trade off is much higher rpm out on the highway and dropped fuel economy (not that there is much on a 4.7 ram in the first place!). You could put a performance exhaust on. That will improve flow a bit. The 4.7 will seem more powerful, but it is not. It just sounds better and louder ... like a scrappy little dog with a big bark, it is still a little dog. If you truly want more power and still like to go fast, then you must swap engine or swap truck.
The 4.7 is a solid reliable long lived engine. Also easy to troubleshoot and to work on. Out of the box it is already an optimized and finely tuned package. Love it. However, as for modification options and turning them into fire breathing dragons ... that the 4.7 is not.
There will be comments that pop in here that will say how much more is possible doing this or that. Again, that's great if you are into doing a lot of wrenching tweaking and a wad of cash to spend on comparatively meager results. It just isn't the wisest path to go down on this truck -- imho. Swap engine or swap truck.
Last edited by FaceDeAce; 03-14-2018 at 12:50 PM.
#5
03-14-2018, 02:17 PM
Banned
When I looked into boosting our 4.7 a bit, the research came back indicating not many options for the 4.7 and of those that do exist the gains are marginal. Conclusion was if you like to wrench and tweak and troubleshoot alot as well as have deep money pockets you can do a few things with less than impressive results. The decision over here is the time tested addage: there is no replacement for displacement. On a 2003 Ram, if you really need to have more than the 4.7 has to offer then the informed choice is to swap engine or swap truck.
That said, there are a a few things that can be done to a Ram to make the 4.7 seem more perky, but at the expense of something else. Before you go there you really need to consider the dominant uses of the truck. For example if you are around town or back roads most of the time at lower speeds (<50mph) then a differential gearing change can improve the torque to the wheels significantly. The 4.7 will seem more powerful, but it is not. The vehicle is just geared lower. The trade off is much higher rpm out on the highway and dropped fuel economy (not that there is much on a 4.7 ram in the first place!). You could put a performance exhaust on. That will improve flow a bit. The 4.7 will seem more powerful, but it is not. It just sounds better and louder ... like a scrappy little dog with a big bark, it is still a little dog. If you truly want more power and still like to go fast, then you must swap engine or swap truck.
The 4.7 is a solid reliable long lived engine. Also easy to troubleshoot and to work on. Out of the box it is already an optimized and finely tuned package. Love it. However, as for modification options and turning them into fire breathing dragons ... that the 4.7 is not.
There will be comments that pop in here that will say how much more is possible doing this or that. Again, that's great if you are into doing a lot of wrenching tweaking and a wad of cash to spend on comparatively meager results. It just isn't the wisest path to go down on this truck -- imho. Swap engine or swap truck.
That said, there are a a few things that can be done to a Ram to make the 4.7 seem more perky, but at the expense of something else. Before you go there you really need to consider the dominant uses of the truck. For example if you are around town or back roads most of the time at lower speeds (<50mph) then a differential gearing change can improve the torque to the wheels significantly. The 4.7 will seem more powerful, but it is not. The vehicle is just geared lower. The trade off is much higher rpm out on the highway and dropped fuel economy (not that there is much on a 4.7 ram in the first place!). You could put a performance exhaust on. That will improve flow a bit. The 4.7 will seem more powerful, but it is not. It just sounds better and louder ... like a scrappy little dog with a big bark, it is still a little dog. If you truly want more power and still like to go fast, then you must swap engine or swap truck.
The 4.7 is a solid reliable long lived engine. Also easy to troubleshoot and to work on. Out of the box it is already an optimized and finely tuned package. Love it. However, as for modification options and turning them into fire breathing dragons ... that the 4.7 is not.
There will be comments that pop in here that will say how much more is possible doing this or that. Again, that's great if you are into doing a lot of wrenching tweaking and a wad of cash to spend on comparatively meager results. It just isn't the wisest path to go down on this truck -- imho. Swap engine or swap truck.
Allows you to bolt the lower manifold on, then you just need the Eaton blower from a Cobra Mustang and to sort the accessory drive. Check out the pics.