Dyno Pull Question

[2003 SVT ROUSH]

This is just a quik Question for anyone that may know ...

WHats the difference if you Pull a lets say a Cobra in 3rd gear Vs 4th gear?? i mean lets say you threw your car on there and ran it in 4th then waited a tad then pulled it in 3rd ?? Will there be any calculating differences ?? or does it matter if the dynometer is calibrated for 3rd or 4th gear pulls or no ??

 

[Demonicbird00]

you have to do a pull in your 1:1 gear and that will be 4th. if you do the pull in 3rd your at 1.xx and that will give you a higher/false dyno reading.

-brandon

 

[2003 SVT ROUSH]

Ahh , thanks i was just wondering how that worked .

 

[2003 SVT ROUSH]

I thought it was traction orieted at first

 

[Demonicbird00]

nah just has to do w/ the gear ratio and getting a proper reading, im sure theyre would be a traction problem as well considering there are ppl spinning the tires w/ higher hp cars w/ the 1:1 pull

 

[2003 SVT ROUSH]

that makes sence Iv seen cars pulled in both gears so it got me wondering why

 

[Demonicbird00]

well 6spds are normally in 4th since thats the 1:1. autos are dynoed in 3rd and other manuals are dynoed in the 1:1 gear, whether its 3rd,4th,or 5th

-brandon

 

[2003 SVT ROUSH]

Gotcha mines always been ran in 4th but it just got me wondering why some other cars may be in another gear , thanks man

Sounds like ya have a quik T/A

 

[Demonicbird00]

thanks, yeah its ok gets me from A to B i need to get a DD tho

 

[SVTkel]

You want a 1:1 ratio while dynoing the car.

 

[Demonicbird00]

yea