What's top speed in each gear Gen IV?

rcl4668

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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
 

j-rho

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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.
 
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gofastr

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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.
Bingo! We have a winner. Thank you.
 

SilveRT8

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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
 
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gofastr

gofastr

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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

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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.

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

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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.
 

Gary Weeks

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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.

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

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Once the car is broken in I can take it to the autobahn :D for some real values...:drive:
 

Jeff Monheim

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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.
 

Malu59RT

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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


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

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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

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

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

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
 
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adamlotus

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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
great pic love that
 

99FRC

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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

this is the real winner. 100% correct
Done some testing at the Texas Mile!!!
 

HI-NOS-Viper

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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

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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

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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


Im assuming this photo was taken on a Dyno:****::****::****:
 

Malu59RT

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I was giving you a hard time Gary. I just wanted a reason to post that pic. :D

Shandon, I have no idea where or when that photo was taken.
 

Gary Weeks

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I was giving you a hard time Gary. I just wanted a reason to post that pic. :D

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! :2tu:
 

Malu59RT

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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! :2tu:

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

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Malu59RT

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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.
 

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