deadman
Viper Owner
With 3.07 or 3.55 rear? I need this to analyze an accident and my viper is no longer :-(. I wasn't driving it nor a passenger. Thanks!
How many RPM in 3rd gear at 50mph?
- Thread starter deadman
- Start date
TrackAire
Enthusiast
3.07 = 2500 rpm
3.55 = 2850 rpm
Member 345sbspinning posted a very good spreadsheet with very ratio, gear and speed you could want.
Good luck,
George
3.55 = 2850 rpm
Member 345sbspinning posted a very good spreadsheet with very ratio, gear and speed you could want.
Good luck,
George
v10viperbox
Enthusiast
1st 2.66
2nd 1.78
3rd 1.30
4th 1.00
5th 0.74
6th 0.50
Effective Final Drive 3.07 or 3.55
Overall Top Gear 1.54
So
2732 in third with a 3.08
3120 in third with a 3.55
With a 27 inch tall tire
2nd 1.78
3rd 1.30
4th 1.00
5th 0.74
6th 0.50
Effective Final Drive 3.07 or 3.55
Overall Top Gear 1.54
So
2732 in third with a 3.08
3120 in third with a 3.55
With a 27 inch tall tire
Bingo, need that as well for overall ratio if you've done aftermarket wheels.
v10viperbox
Enthusiast
It can change it a good bit but when your looking at 50mph in 3rd and looking to see if RPM had any effect on what happened, I would say no. 5-10% change in RPM does not do much, though it does make 6th gear actually useful.
Even with run craps and 3.55 gears and more power then stock I cannot break my tires loose in 3rd gear.
deadman
Viper Owner
So at 60mph it would have been 3744 with 3.55... thanks a bunch. I think the event wasn't so much about the spin as about the letting off in a down pointing left turn. Once the investigation closes I will post something.
v10viperbox
Enthusiast
Down left turn with short gears is more then enough to unsettle the car, add in letting off the gas that would put it over the edge.
With shorter gears once you are sliding if you jam on the gas to get back in powerband its a lot more touchy to get traction.
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