gofastr
Enthusiast
Anybody know?
What's top speed in each gear Gen IV?
- Thread starter gofastr
- Start date
RX VIPER
Enthusiast
I do know the shift light comes on in 5th at 192 
rcl4668
Enthusiast
My fuzzy recollection from reading another post or magazie article is that for a 2008-2009, 1st gear will take you to 60 mph, 2nd will take you to about 80 mph, 3rd is about 130 mph, and from there I just can't remember. 6th gear is obviously very tall and is theoretically geared for about 300 mph
but that one would obviously take you to the Viper's top speed of 202 mph.
/Rich
but that one would obviously take you to the Viper's top speed of 202 mph./Rich
VIPER GTSR 91
Enthusiast
Will let you know after I get the break in miles done.
j-rho
Enthusiast
Based on rev limiter @6350, 345/30-19 Michelin PS2 @764 revs/mi, and stock gearing of 2.66, 1.78, 1.30, 1.1, .74, .50 with 3.07 rear end-
1st-60
2nd-91
3rd-125
4th-147
5th-219
6th-325
Edit to add, Gen3 speeds are about 3% lower in each gear due to lower rev limit.
1st-60
2nd-91
3rd-125
4th-147
5th-219
6th-325
Edit to add, Gen3 speeds are about 3% lower in each gear due to lower rev limit.
OP
OP
gofastr
Enthusiast
Bingo! We have a winner. Thank you.
SilveRT8
Enthusiast
From Road&Track test of 2008 Viper SRT10 Coupe :
1 :6250 rpm 62 mph
2 :6250 rpm 91
3 :6250 rpm 127
4 :6250 rpm 165
5 :5450 rpm 202 drag limited
6 : na top speed reached in 5th gear
1 :6250 rpm 62 mph
2 :6250 rpm 91
3 :6250 rpm 127
4 :6250 rpm 165
5 :5450 rpm 202 drag limited
6 : na top speed reached in 5th gear
OP
OP
gofastr
Enthusiast
There seems to be a large variation of opinion for top speed in 4th gear. Is it 147 mph or 165 mph? I'd guess 165 is correct.
Gary Weeks
Viper Owner
The Gen IV cars have a different 2nd gear ratio than the Gen III cars. The Gen IV has 1.82 2nd gear and the Gen III is a 1.78. Granted not much difference but it is different. Also in one post they are using 6350 and the other is 6250 rpm.
The post from the Road and Track test is correct for the speeds in each gear. I have tested it in the car with 3.07 gears. I also have tested it with 3.55 gears and the Mopar PCM at 6500 rpm and this is the results with that combo.
1st- 56 mph
2nd- 81 mph
3rd- 114 mph
4th- 148 mph
5th- 200 mph
6th- N/A
j-rho
Enthusiast
Hmmm, I've seen both 1.1 and 1.0 listed online as the 4th gear ratio for the car. If it's 1.0, then the top speed would be more like 162-163, which jives with the R&T results.
Would be nice if they made 5th a bit shorter (like .84) to make it more useful at the track. Could still keep the uber-tall 6th for highway MPG figures.
Would be nice if they made 5th a bit shorter (like .84) to make it more useful at the track. Could still keep the uber-tall 6th for highway MPG figures.
Gary Weeks
Viper Owner
This is copied from the Dodge service manual for an 08. Top speed as stated before is in 5th gear at about 5500 rpm which is right at the sweet spot for torque and HP
GEAR RATIO GEAR
RATIO
FIRST
2.66
SECOND
1.82
THIRD
1.30
FOURTH
1.00
FIFTH
0.74
SIXTH
0.50
REVERSE
2.90
ViperGTS
Enthusiast
- Joined
- Jul 15, 2001
- Posts
- 5,016
- Reaction score
- 0
Once the car is broken in I can take it to the autobahn for some real values...
for some real values...Jeff Monheim
Viper Owner
- Joined
- Apr 1, 2008
- Posts
- 379
- Reaction score
- 0
I have hit 160 plus in fourth in my 08 at Watkins Glenn Race track on the back straight. Not sure of the rpm but close to the rev limit i think.
adamlotus
Enthusiast
i have hit 160 in 4th also on a closed track of course
Malu59RT
Enthusiast
This is absolutely wrong about 4th gear. I know what you are thinking to yourself, "Malu59RT, how can you say a statement like that so boldly?" May I present to you, exhibit A:
You must be registered for see images attach
Gary Weeks
Viper Owner
You might want to read the WHOLE post before you make such a bold statement....I was giving you the speeds with 3.55 gears! Road and track published the ones with 3.07
Last edited:
adamlotus
Enthusiast
great pic love that
HI-NOS-Viper
Enthusiast
The post did not mention aftermarket gears so it seems the mentioned winner is correct. So what are the top speed limits for each gear for a gen 3? I am sure not much different than a gen 4 but is a little different
HI-NOS-Viper
Enthusiast
But I do know that I can drive all of Hawaii even any highway in first gear and go the speed limit and some
Shandon
Enthusiast
Malu59RT
Enthusiast
I was giving you a hard time Gary. I just wanted a reason to post that pic.
Shandon, I have no idea where or when that photo was taken.
Shandon, I have no idea where or when that photo was taken.
SilveRT8
Enthusiast
I was giving you a hard time Gary. I just wanted a reason to post that pic.
Shandon, I have no idea where or when that photo was taken.
Good idea, I'll take a similar shot next time my car is on the dyno !! LOL, (not saying this one is bogus, but for sure mine will be)
Malu59RT
Enthusiast
Looking at that photo again, it looks a little "bright" outside to be in a dyno room.
Gary Weeks
Viper Owner
I was giving you a hard time Gary. I just wanted a reason to post that pic.
Shandon, I have no idea where or when that photo was taken.
No problem Malu I just figured you had your car on jack stands!!
But it is a cool picture. Next time I'm in Dallas I'll take you for a ride and you can get the picture!
Malu59RT
Enthusiast
No problem Malu I just figured you had your car on jack stands!!
But it is a cool picture. Next time I'm in Dallas I'll take you for a ride and you can get the picture!
Watch this entire video and tell me if the picture looks familiar. That driver deserves a cookie for taking that photo at 160mph
Videos :: 2009 Texas Viper Round-up Teaser remix by Malu59RT - Photobucket
Do hit me up if you come up to Dallas, hopefully there will be something interesting going on that weekend Gary.
Gary Weeks
Viper Owner
Watch this entire video and tell me if the picture looks familiar. That driver deserves a cookie for taking that photo at 160mph
Videos :: 2009 Texas Viper Round-up Teaser remix by Malu59RT - Photobucket
Do hit me up if you come up to Dallas, hopefully there will be something interesting going on that weekend Gary.
Nice Video....I hope it was done with a helment cam?
Shandon
Enthusiast
yea looks like it! Finaly saw both hands on the wheel and the camera was moving so it was on the helmet.
Malu59RT
Enthusiast
Looks like he was talking to someone else, so I would guess there was a passenger taking the video. The photo probably was by the driver. That says a lot about how stable those cars are, at 160.
Similar threads
