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Old 08-29-2017, 09:27 PM   #1
EddieM92
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Circle D torque converter

Does anyone have any info on this does it really help improve time? If anyone has experience with it or knowledge please let me know. My current set up is TSP 2inch Headers & XPipe, CAI, E85, Tune.
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Old 08-29-2017, 11:22 PM   #2
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Tsp sells that converter! Give us a call to discuss your build
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Old 08-30-2017, 06:31 AM   #3
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Quote:
Originally Posted by Jason 98 TA View Post
Tsp sells that converter! Give us a call to discuss your build
What's the difference between the tsp and circle D I've heard of ppl using the circle D and haa good performance from it.
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Old 08-30-2017, 11:07 AM   #4
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Think he means TSP sells the circle d converter...
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Old 08-30-2017, 11:34 AM   #5
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Quote:
Originally Posted by Jason 98 TA View Post
Tsp sells that converter! Give us a call to discuss your build
FYI
if TSP = Texas Speed Performance, then your website needs updating. There are NO torque converters listed for the Gen 6.

Gen 5, yes.
Gen 6, No.

What's weird is that Circle D doesn't even list a converter for the 8L90 on their website..but yet Brett (Pray) has one.
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Old 08-30-2017, 09:37 PM   #6
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Go Circle D!! I have one in my 5th Gen and do 1.42/1.44 60fts at the track.

I have a Circle D 4C sitting right here waiting to go in my 6th Gen. Correct, the 8L90 converters aren't on their website, but they do make and sell them!
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Old 09-17-2017, 08:58 AM   #7
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Is the Circle D unit a full billet piece or are they still cutting stock units? I'm shocked Yank hasn't released anything yet.
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Old 09-18-2017, 06:20 PM   #8
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Circle D doesn't have pre-made torque converters just sitting around. They make them specifically for your car based upon mods.
You get a 2 year warranty, also during the first 2 years, if you add anything to your car that requires a higher stall, you just pay to have it shipped, and they change it, no parts or labor costs.
Also while running a looser converter, a transmission cooler is cheap insurance to keep your transmission running good for years.

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Old 10-21-2017, 06:51 PM   #9
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Mine works for me. 1.44 60fts with just bolt ons.
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Old 11-11-2017, 06:19 PM   #10
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chris made me the first 2 8l90 converters for my car.. yes they are worth every penny. 1.40 60fts for me. i know he requires you to send in your conveter for a core. idk if thats still the case or not.
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Old 11-11-2017, 08:48 PM   #11
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Quote:
Originally Posted by EddieM92 View Post
Does anyone have any info on this does it really help improve time? If anyone has experience with it or knowledge please let me know. My current set up is TSP 2inch Headers & XPipe, CAI, E85, Tune.
You should pick up at least a half a second of ET with the right converter. They have always been great 'bang for the buck' mods. I picked up .3 in the 60' going from a Yank Stealth Thruster 2800 to a Yank SS4000 (1.7x to 1.4x). Picked up .6 in the quarter from 12.20 to 11.60. That was in my 99 LS swapped Camaro.
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Old 11-12-2017, 06:48 AM   #12
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You should pick up at least a half a second of ET with the right converter. They have always been great 'bang for the buck' mods. I picked up .3 in the 60' going from a Yank Stealth Thruster 2800 to a Yank SS4000 (1.7x to 1.4x). Picked up .6 in the quarter from 12.20 to 11.60. That was in my 99 LS swapped Camaro.
Those days are long gone. Expect no more than .2 to possibly .3 with any converter. I would only put a Circle D in my car or any customer cars. Best company going by far IMHO.

You will drop about .1-.15 off your 60ft. With 5 forward gears now and how pretty darn good the stock converter is it is hard to realize the gains like back in the 3 speed days. The biggest benefit for me was the daily driving and normal acceleration stuff. The car just completely woke up. It is truly a joy to drive now.
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Old 11-14-2017, 11:55 AM   #13
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Quote:
Originally Posted by PRAY View Post
Those days are long gone. Expect no more than .2 to possibly .3 with any converter. I would only put a Circle D in my car or any customer cars. Best company going by far IMHO.

You will drop about .1-.15 off your 60ft. With 5 forward gears now and how pretty darn good the stock converter is it is hard to realize the gains like back in the 3 speed days. The biggest benefit for me was the daily driving and normal acceleration stuff. The car just completely woke up. It is truly a joy to drive now.
Can you expand a little on how it woke up the car? I have a Maggie on my SS with the A8 and running the stock tune and have a ported T/B. What would the seat of the pants test be like? Thanks for the help.
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Old 11-14-2017, 12:33 PM   #14
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Can you expand a little on how it woke up the car? I have a Maggie on my SS with the A8 and running the stock tune and have a ported T/B. What would the seat of the pants test be like? Thanks for the help.
Yes please explain or do you have any Youtube links that help us to understand? I daily drive this car so it still needs to run fine on the streets.
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