[PAUL K]

Originally Posted by Dragncar

Well, looks like I am at 30% so I would be happy with 9% at this point.
I have a 9" PTC fresh from them. I will put it in and see what happens.
Motor is running great. Trans seems to be fine. 1.38 and 1.39 60 foots this weekend. Hits the tires hard in the burnout and 2nd gear and the 2-3 shift is solid.

Thirty percent is a lot .... How are you coming up with this number?

[Dragncar]

Originally Posted by PAUL K

Thirty percent is a lot .... How are you coming up with this number?

Wallace Racing. I don't think its dead nuts on but when I run my numbers it does not make sense. I punch in RPM, gears, tire size, 3rd gear ratio ect

I mean, I am under no illusion I should be in the 140 mph range. But 130s should be in the picture.
I re did the numbers, its 22% slip, not 30%.
Still, not very good.
I just want my E.T.-MPH to match my weight and 60 foots and the finish line RPM.
I am easily out 60 footing much lighter 10 flat cars.
The converter seems to be the issue.
When I get the fresh PTC in I will know more. Maybe I will call Hughes and see what they have to say-or sell me on. If there is a better converter, I want it.

[PAUL K]

Originally Posted by Dragncar

Wallace Racing. I don't think its dead nuts on but when I run my numbers it does not make sense. I punch in RPM, gears, tire size, 3rd gear ratio ect

I mean, I am under no illusion I should be in the 140 mph range. But 130s should be in the picture.
I re did the numbers, its 22% slip, not 30%.
Still, not very good.
I just want my E.T.-MPH to match my weight and 60 foots and the finish line RPM.
I am easily out 60 footing much lighter 10 flat cars.
The converter seems to be the issue.
When I get the fresh PTC in I will know more. Maybe I will call Hughes and see what they have to say-or sell me on. If there is a better converter, I want it.

Does that calculator take into account tire growth and if its a radial or not?

[Dragncar]

Originally Posted by PAUL K

Does that calculator take into account tire growth and if its a radial or not?

No, white calculator site do you use ? I thought most of us Pontiac folk used Wallace.

[slowbird]

Originally Posted by Dragncar

Wallace Racing. I don't think its dead nuts on but when I run my numbers it does not make sense. I punch in RPM, gears, tire size, 3rd gear ratio ect

I mean, I am under no illusion I should be in the 140 mph range. But 130s should be in the picture.
I re did the numbers, its 22% slip, not 30%.
Still, not very good.
I just want my E.T.-MPH to match my weight and 60 foots and the finish line RPM.
I am easily out 60 footing much lighter 10 flat cars.
The converter seems to be the issue.
When I get the fresh PTC in I will know more. Maybe I will call Hughes and see what they have to say-or sell me on. If there is a better converter, I want it.

What is your Et/mph? Rear gear and tire size?