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-   -   what convertor ? (https://classracer.com/classforum/showthread.php?t=56172)

O.Devine 12-25-2014 09:53 PM

what convertor ?
 
I need some info regarding what convertor to use in a 3200 pound ss car with a 1.90 glide.
I currently use an 8inch but have slow 60 ft. et.

countrypuppy4865 12-25-2014 10:08 PM

Re: what convertor ?
 
3 speed tranny and need way more info than that to determine convertor. Engine dyno gives a good idea on what convertor it should like.

O.Devine 12-25-2014 10:14 PM

Re: what convertor ?
 
pulled off dyno at 850 h.p. @8000 rpm

Mark Yacavone 12-25-2014 10:34 PM

Re: what convertor ?
 
SS/ Modified car ?

Still need more info...Peak torque? @ ?
RPM in the lights. etc etc etc.

O.Devine 12-25-2014 10:49 PM

Re: what convertor ?
 
612 torque @ 6500
launch 5500 trans brake
shift 9000
traps 9100 151 mph
I know there is no mysterious formula for this, but I am trying to figure if I need a 7inch convertor.
This is a SS/AS car

Ed Wright 12-25-2014 11:05 PM

Re: what convertor ?
 
A1 has got the modified type stuff figured out really well. Call them with all the dyno info you have. I'm pretty sure it will be a 7" converter. I don't know that they build an 8".

Mark Yacavone 12-25-2014 11:34 PM

Re: what convertor ?
 
Quote:

Originally Posted by O.Devine (Post 456399)
612 torque @ 6500
launch 5500 trans brake
shift 9000
traps 9100 151 mph
I know there is no mysterious formula for this, but I am trying to figure if I need a 7inch convertor.
This is a SS/AS car

Probably so.
Cubic inch? stroke?

O.Devine 12-26-2014 12:47 AM

Re: what convertor ?
 
394 cubic inches
3.625 stroke
4.160 bore
8 inch ATI stalls. 5500 to 6000 depending on air

ATI Performance Products 12-26-2014 01:15 AM

Re: what convertor ?
 
Quote:

Originally Posted by O.Devine (Post 456412)
394 cubic inches
3.625 stroke
4.160 bore
8 inch ATI stalls. 5500 to 6000 depending on air

If you are turning 9k then 5.5 to 6k is way to tight. I am guessing the converter was not built for your current combo? Call the shop with the SN and we can check the build specs and tell you if there is room to loosen it up. If you do need a 7 in we will tell you that too even tho we don't sell them. A1 is a good choice for a 7 inch product for sure.

O.Devine 12-26-2014 01:24 AM

Re: what convertor ?
 
I did not mean to imply there is anything wrong with ATI convertors, I have won many rounds and a few races with this convertor,this convertor is really consistent, that is the reason I am looking for some info on convertors as I don't want to throw the baby out with the bathwater.


Yes this convertor was built for another combination but it was returned and restalled for this combination


ATI builds a great product, I absolutely would use them again.


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