1997 Viper GTS Dyno Runs

[bdelass]

I just dynoed my '97 GTS for the first time today. It is essentially stock with a Borla exhaust, K&N filters, smooth tubes and 17,100 miles on the clock.

I made 3 runs, the best of which was 429.25 HP and 458.70 TQ. I thought this was pretty good for an essentially stock car, but how does this compare to everyone else with similar mods?

 

[SSSSE YA]

That sounds about right. Did you get a stock baseline dyno pull ?

 

[bdelass]

Unfortunately I bought the car with the mods already in place, so I don't have anything to compare it to. That's why I was kind of curious to see what numbers everyone else made with similar mods.

 

[sekhmet]

Sounds about right. Can't really compare it to other dynos because of other factors but its in the correct ballpark I believe.

 

[96GTS]

96 GTS with pretty much the same mods. 438 hp/490 torque

 

[Martin]

I forget - what's the driveline loss in these cars? I seem to remember it was around 12%. If that's true, getting close to 490 FW HP out of a car with minor mods is really good.

 

[vipzilla]

add a vec too it and get more hp

 

[99 R/T 10]

Have you got a chance to change the plugs and wire? I fyou still have the old stuff, it may be robing you of 10 HP.

 

[Dom426h]

I forget - what's the driveline loss in these cars? I seem to remember it was around 12%.

around there. but a % is not always the best way to calculate flywheel hp. For example using the % method on a TT viper viper would result in a much greater drivetrain loss than a stock viper. This dosnt make sense. All vipers with the same trans/diff/shafts should have the Same total loss...

There is a couple threads on here where SeanROE breaks this down.
I remember him stating that a fixed 60hp loss is what he determined.

I personaly think the number could be closer to 50 seeing that stock gen2's put down around 400 to the wheels, and the flywheel rating is 450:
450-400 = 50hp drivetrainloss
but hey, who am i to dissagree with Sean