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How to determine which transmission is in your LX *

79K views 59 replies 28 participants last post by  gfr-300SRT8 
#1 · (Edited)
This information is found on the body code plate which is located in the engine compartment on the front right side shock tower mounting front panel. the first three digits on the bottom line are the transmission code.
DG6 = 42RLE
DGV = 42RLE with VLP (variable line pressure)
DGJ = NAG1



1 - PRIMARY PAINT
2 - SECONDARY PAINT
3 - VINYL ROOF
4 - VEHICLE ORDER NUMBER
5 - CAR LINE SHELL
6 - PAINT PROCEDURE
7 - ENGINE
8 - TRIM
9 - TRANSMISSION
10 - MARKET
11 - VIN
 
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#4 ·
Does that include the AWD models?
 
#6 · (Edited)
as far as i know:
2005 2.7L & 3.5L RWD models use 42RLE trans.
2005 3.5L AWD models use NAG1 trans.
2005 5.7L RWD & AWD models use NAG1 trans.
2005 6.1L models use NAG1 trans.
2006 2.7L models could be equipped with either 42RLE or 42RLE with VLP trans.
early build 2006 3.5L RWD models could be equipped with either 42RLE or 42RLE with VLP trans.
late build 2006 3.5L RWD use NAG1 trans.
2006 3.5L AWD models use NAG1 trans.
2006 5.7L RWD & AWD models use NAG1 trans.
2006 6.1L models use NAG1 trans.
 
#7 ·
Thanks FC... Interesting that the AWD and RWD models have the same tranny... I would have thought a different model would be in order... but guess not.
 
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#10 ·
LH_Chris said:
Does anyone know if the NAG1 is a direct bolt in/upgrade for the V6 cars? I assume it would be, Im just making sure. Does anyone know how much power these trannys can handle?
This brings up another question: Since the newest SXT models are said to be using the same transmission as the R/T, how can one be certain that the car does have whe NAG1 transmission?
 
#13 ·
fnkychkn said:
as far as i know:
2005 2.7L & 3.5L RWD models use 42RLE trans.
2005 3.5L AWD models use NAG1 trans.
2005 5.7L RWD & AWD models use NAG1 trans.
2005 6.1L models use NAG1 trans.
2006 2.7L models could be equipped with either 42RLE or 42RLE with VLP trans.
2006 3.5L RWD models could be equipped with either 42RLE or 42RLE with VLP trans.
2006 3.5L AWD models use NAG1 trans.
2006 5.7L RWD & AWD models use NAG1 trans.
2006 6.1L models use NAG1 trans.
Correction

2006 3.5L RWD Uses only NAG1 trans across the board. 42RLE is only with 2.7 from now on.

Another easy way to tell your 4speed from 5 speed is to look for the autostick shifter in the car. The 4 speeds have PRND3L the 5speed only has PRND
 
#18 · (Edited)
But this tranny is used on the 6.1L, which has about 420ftlbs of torque. I think it can handle much more than that. DCX wouldn't release a car that is at it's max load capabilities. If that were the case, an SRT owner doesn't stand a chance with that tranny for the longterm.
 
#15 ·
fnkychkn said:
This information is found on the body code plate which is located in the engine compartment on the front right side shock tower mounting front panel. the first three digits on the bottom line are the transmission code.
DG6 = 42RLE
DGV = 42RLE with VLP (variable line pressure)
DGJ = NAG1
What exactly is VLP? What is the benefit? Thanks fnky! You da' man!
 
#16 ·
jfargus said:
Correction

2006 3.5L RWD Uses only NAG1 trans across the board. 42RLE is only with 2.7 from now on.

Another easy way to tell your 4speed from 5 speed is to look for the autostick shifter in the car. The 4 speeds have PRND3L the 5speed only has PRND
actually, early build '06 3.5L models still used 42RLE.
 
#17 ·
Magnum Maniac said:
What exactly is VLP? What is the benefit? Thanks fnky! You da' man!
VLP (variable line pressure) equipped transmissions use a TCM controlled solenoid to bleed off excess pressure from the pump when pressure demand is low. this reduces parasitic drag caused by the oil pump under low load conditions helping to improve fuel mileage.
 
#23 ·
So what's the difference in the German built NAG1 5 speed in the SRTs and the US built versions in the RTs, Daytonas and 300Cs?

At the factory tour a couple of years ago, they told us the SRT transmissions were built with more clutches and higher line pressure. Does this change the torque rating in any way?

Then they also told us that, in the SRT, the drivelines were beefed up to 4 bolt connection, the rear gears were bigger/stronger and so are the axles.
 
#26 ·
At the factory tour a couple of years ago, they told us the SRT transmissions were built with more clutches and higher line pressure. Does this change the torque rating in any way?

Then they also told us that, in the SRT, the drivelines were beefed up to 4 bolt connection, the rear gears were bigger/stronger and so are the axles.
all true except the part about more clutches. the amount of clutches is the same. only the number of discs per clutch is different.
more clutch discs = less torsional stress on each clutch disc.
more line pressure = higher torque required before clutches start to slip.
 
#28 ·
You are saying that the NAG1 tranny is the same in the RT/SRT except for them putting in larger clutch drums (same external size) that hold more clutches and a raised line pressure. If that is true then why does an RT tranny, when put in manual low force shift itself and the SRT tranny just stays in low no matter what until the rev limiter cuts in and out but it still stays in low??

Can you explain that??
 
#29 ·
You are saying that the NAG1 tranny is the same in the RT/SRT except for them putting in larger clutch drums (same external size) that hold more clutches and a raised line pressure. If that is true then why does an RT tranny, when put in manual low force shift itself and the SRT tranny just stays in low no matter what until the rev limiter cuts in and out but it still stays in low??

Can you explain that??
different TCM programming. however, the latest SRT8 TCM update will force an upshift even in autostick.
 
#30 ·
Well, I have to go take a look at mine now - but I did not see my particular model/configuration there. 2005 Chrysler 300 3.5. I know I got cheated out of the autostick, but would hate to find out that it also screwed me out of a 5th gear and better mileage!
 
#32 ·
The 5.7 tranny is considered a 581 5 speed tranny correct?
 
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