Recent content by Johnny_N_TX
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3.21 vs 3.92 Gear Ratio...will not be towing much.
Here's a bit of a sidebar for you that might engage your thought processes a bit... My truck is a very different setup than yours, but I have had amazing luck with 4.56 gears. I'm in a 2002 with the 4.7(non-HO... the 245hp/315 ft-lbs version), 5 speed automatic, 2wd which is rolling on 33"...- Johnny_N_TX
- Post #190
- Forum: Engine & Performance
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2002 4.7 with 545RFE and 4.56:1.00 trutrac = AWESOME!!!
That is funny as hell!!! :driver:- Johnny_N_TX
- Post #17
- Forum: Engine & Performance
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2002 4.7 with 545RFE and 4.56:1.00 trutrac = AWESOME!!!
HemiLonestar: So do you know of people who have reprogrammed their TCM rather than just swapping one in from a Jeep? I found a few companies that are offering EPROM programming. I actually want to modify the pin-out as well (to add another button), and so far none of the companies I have...- Johnny_N_TX
- Post #14
- Forum: Engine & Performance
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2002 4.7 with 545RFE and 4.56:1.00 trutrac = AWESOME!!!
I definitely wasn't going for MPGs... it was just a happy accident. I was mostly concerned with being able to tow my trailers with a 20 year old truck. I was turning off the OD to tow my RV, but with the new gears, I just leave the OD on and let the machine decided to do what it wants. As for...- Johnny_N_TX
- Post #13
- Forum: Engine & Performance
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2002 4.7 with 545RFE and 4.56:1.00 trutrac = AWESOME!!!
Don't need any seats or door panels. Thanks. Nothing wring with the electronics in this vehicle... I think it's actually a better design than the "all in one" system in the newer vehicles. (1) Less prone to taking out the entire vehicle with one piece of gear (2) easier to modify: it's...- Johnny_N_TX
- Post #11
- Forum: Engine & Performance
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2002 4.7 with 545RFE and 4.56:1.00 trutrac = AWESOME!!!
Figure out where the "happy place" is in your RPM range... The 3.7 and 4.7 are basically the same engine with +/- 2 cylinders, so I'd imagine your V6 is happiest between 2100-2500 rpms with less throttle being given (at least for MPGs). I honestly was more concerned with making sure I was just...- Johnny_N_TX
- Post #3
- Forum: Engine & Performance
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2002 4.7 with 545RFE and 4.56:1.00 trutrac = AWESOME!!!
Just wanted to share my experience thus far with owning and upgrading my Ram: I inherited a 2002 Ram from my Dad last year. It came with a 4.7, 45RFE (it was originally a 4 spd) and 3.55:1.00 gear with an open diff. The truck was a real pig. It was slow to get up to 65, got horrible fuel...- Johnny_N_TX
- Thread
- 33 inch tires 33" 4.56:1 4.7 545rfe fuel economy overdrive sonnax tcm towing
- Replies: 24
- Forum: Engine & Performance
