what convertor ?

O.Devine · 12-25-2014, 09:53 PM

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

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

pulled off dyno at 850 h.p. @8000 rpm

Mark Yacavone · 12-25-2014, 10:34 PM

SS/ Modified car ?

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

O.Devine · 12-25-2014, 10:49 PM

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

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

Quote:

Originally Posted by O.Devine

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

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

Quote:

Originally Posted by O.Devine

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

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.

12-25-2014, 09:53 PM	#1
O.Devine Junior Member Join Date: Nov 2013 Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	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. Last edited by O.Devine; 12-25-2014 at 10:18 PM. Reason: mistyping

12-25-2014, 10:08 PM	#2
countrypuppy4865 Senior Member Join Date: Nov 2003 Location: Donaldsonville, LA Posts: 982 Likes: 17 Liked 228 Times in 70 Posts	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. __________________ Jimmy "Cooter" Hidalgo, Jr. 4865 E/SA '04 GTO 4865 SS/GA '99 Firebird

12-25-2014, 10:14 PM	#3
O.Devine Junior Member Join Date: Nov 2013 Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	Re: what convertor ? pulled off dyno at 850 h.p. @8000 rpm

12-25-2014, 10:34 PM	#4
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,819 Likes: 2,910 Liked 5,127 Times in 1,955 Posts	Re: what convertor ? SS/ Modified car ? Still need more info...Peak torque? @ ? RPM in the lights. etc etc etc. __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

12-25-2014, 10:49 PM	#5
O.Devine Junior Member Join Date: Nov 2013 Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	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

12-25-2014, 11:05 PM	#6
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	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". __________________ Ed Wright 4156 SS/JA

12-26-2014, 12:47 AM	#8
O.Devine Junior Member Join Date: Nov 2013 Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	Re: what convertor ? 394 cubic inches 3.625 stroke 4.160 bore 8 inch ATI stalls. 5500 to 6000 depending on air Last edited by O.Devine; 12-26-2014 at 12:53 AM. Reason: add info

12-26-2014, 01:24 AM	#10
O.Devine Junior Member Join Date: Nov 2013 Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	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. Last edited by O.Devine; 12-26-2014 at 01:26 AM. Reason: typing correction