New Converter, Different Shift Points?

[S/ST 3040]

Originally Posted by 1320racer

What's your criteria that has you believing it's "a better converter"?

The one critical bit of information you omitted and frankly the first and foremost bit of information necessary when discussing converters, in the absence of dyno results is... your cam's duration @ .050?

Without it, there is no meaningful discussion or advice.

Lastly, you have an engine combo that maybe makes 500+HP and 400+ ft/lbs. torque at probably around 5000 RPM. A converter that flashes to 5800 is too loose no mind one that flashes to 6250 IF the goal is to "shave some ET." The fall back RPM is what is most important.

Maybe I should have not used "better" and I understand there is more to converters than stall speed. I just figured, I'd tried a couple of different converters with two tire sizes. (basically, a gear change) and hoped it was enough data to give the guy at ATI some direction to go.
It looks like, everybody agrees it could pick up with the "right" converter?

[1320racer]

again, what is your cam's duration at .050?

[S/ST 3040]

Originally Posted by 1320racer

again, what is your cam's duration at .050?

IN Closes 63º ABDC @ .050"

[1320racer]

run the other way from whoever told you that cam was what you needed!!

You are wasting your time with converters with that cam that's at least 40 degrees too big for your 9:1 bracket engine!

FTI, the cam in my 15.5:1 598 has similar duration @ .050.

[S/ST 3040]

Originally Posted by 1320racer

run the other way from whoever told you that cam was what you needed!!

You are wasting your time with converters with that cam that's at least 40 degrees too big for your 9:1 bracket engine!

FTI, the cam in my 15.5:1 598 has similar duration @ .050.

It is a turd!

1.2664 60'
3.85 330'
6.058 660'
9.66 @ 135.4 MPH1320'

[1320racer]

a 9.66 best at 2600 lbs. IS a turd!

[S/ST 3040]

Originally Posted by 1320racer

a 9.66 best at 2600 lbs. IS a turd!

I think there's more in it. I'm not sure how much quicker I'll
need to go to get a 9.24:1 340 out of that category though.

[Mike Pearson]

Originally Posted by S/ST 3040

It is a turd!

1.2664 60'
3.85 330'
6.058 660'
9.66 @ 135.4 MPH1320'

Those numbers are not real shabby for something that you built yourself. Non of us started out setting the world on fire. Just keep asking questions and talk to the educated guys about your combo, Talk to the cam companies about a good cam for your combo. Also stick with the better converter companies for a converter that will optimize what you have. Best of luck with your ride and the most important thing is you have fun with it.

[S/ST 3040]

Thanks Mike. It may not have national record power but, I do have a LOT of time and effort in the car.

I have found most cam representatives, I get to talk to, aren't really SS savvy and steer me to grinds in their catalogs.

I'd be real interested to know the cam specs in a cutting edge, low compression 340 super stocker.

I've found, in the past, they don't give out that kind of information and I don't blame them.

[pfordamx]

Originally Posted by Mike Pearson

Those numbers are not real shabby for something that you built yourself. Non of us started out setting the world on fire. Just keep asking questions and talk to the educated guys about your combo, Talk to the cam companies about a good cam for your combo. Also stick with the better converter companies for a converter that will optimize what you have. Best of luck with your ride and the most important thing is you have fun with it.

curious he mentioned ati is ati not one of the better converter companies?