Not enough power
Professional
Joined: Nov 2012
Posts: 192
Likes: 11
From: Lake Zurich, IL
I believe the 2013 R/T has a 3.45 final drive. I pulled the info from this Car and Driver site (You can select the model):
http://buyersguide.caranddriver.com/...o/specs/353193
I just checked the build sheet for my 2013 Crew with the 5.7L and it has the 3.45 rear axle ratio.
http://buyersguide.caranddriver.com/...o/specs/353193
I just checked the build sheet for my 2013 Crew with the 5.7L and it has the 3.45 rear axle ratio.
Veteran
Joined: Jun 2012
Posts: 353
Likes: 0
From: Earth
Another cheap performance change is the Tow/Haul button (may be renamed on newer models). It delays shifts, so it operates longer in the power band before shifting. Makes quite a difference. When I need to merge into traffic quickly, it sure gets the job done!
All Star
Joined: Nov 2013
Posts: 844
Likes: 1
From: Houston, Texas
Diablo DCX and Edge racing 3200 stall torque converter. Thats all you need unless youre trying to impress the internet. The Superchargers are making good power but give them 10k miles and lets see how durable its been to forcebly add 50% more power rather than extract the power thats available. Also those are using a centrifugal blower aka no high power unless really revving it out.
Between the 2 it's over $1,000 + installation on the tq and at best you get 15 Hp
Seems like the cam at 1,200 that gives 25+ hp would make more sense
Rookie
Joined: Jun 2014
Posts: 69
Likes: 0
I believe the 2013 R/T has a 3.45 final drive. I pulled the info from this Car and Driver site (You can select the model):
http://buyersguide.caranddriver.com/...o/specs/353193
I just checked the build sheet for my 2013 Crew with the 5.7L and it has the 3.45 rear axle ratio.
http://buyersguide.caranddriver.com/...o/specs/353193
I just checked the build sheet for my 2013 Crew with the 5.7L and it has the 3.45 rear axle ratio.
Professional
Joined: Jan 2014
Posts: 144
Likes: 2
Tune helped with power a good bit but the converter was hands down best bang for the buck. If you ever get the chance to drive a vehicle with a proper stall to match the engines power band, you'll rethink that statement. Not to mention that if youre going to go with a cam agressive enough to make that kind of power difference, youll need the converter.
Last edited by redalty; Mar 4, 2015 at 11:41 PM.
All Star
Joined: Nov 2013
Posts: 844
Likes: 1
From: Houston, Texas
Tune helped with power a good bit but the converter was hands down best bang for the buck. If you ever get the chance to drive a vehicle with a proper stall to match the engines power band, you'll rethink that statement. Not to mention that if youre going to go with a cam agressive enough to make that kind of power difference, youll need the converter.
What are your thoughts on doing the tq without the tune?
Professional
Joined: Nov 2012
Posts: 192
Likes: 11
From: Lake Zurich, IL
A 3.09 will be better for mpg at highway speed; it means that at, for example, 60mph, the engine on a D with a 3.09 will turn at a lower rpm than one with a 3.45. I had a station wagon with towing package and a gear ratio of 2.97; at 60mph cruising speed the engine (a 5.7L LT1 V8) was turning just 2100rpm delivering about 25mpg.
Professional
Joined: Jan 2014
Posts: 144
Likes: 2
I wouldn't do it. The torque management system in the pcm would more than likely try to fight the converter as it was laying down that whoopow.
Professional
Joined: Jan 2014
Posts: 144
Likes: 2
At the time I was without a garage and it seemed like more than I wanted to tackle in the driveway so I had a good friend $500 to install at his shop. I also had a quote to install at another trusted shop for $360 but they were booked out a little further. I had knee surgery and was able to drop it off with short notice and have it installed while I was recovering.
