Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

Circle D initial impressions

Thread Tools
 
Search this Thread
 
Old Sep 6, 2008 | 01:24 PM
  #1  
JFM-jr's Avatar
Thread Starter
9 Second Club
iTrader: (23)
 
Joined: Oct 2002
Posts: 1,150
Likes: 1
From: Mastic Long Island N.Y.
Default Circle D initial impressions

I ran a Yank converter since the 1st converter change back in 1999. I went from an SS3600 to a PT4000 then finally to a PT4400. All were great converters with equally great results at the strip. My PT4400 was 5 years old and I got my moneys worth from it by far but it started showing it's age. It was not giving the results expected at the track and shift extension continued to narrow. Basically the converter was beginning to fail on me and with 5 years hard labor it owed me NOTHING. Spoke with Dave at Yank a couple of times and I felt I was being led in the wrong direction so decided to give Chris at Circle D a call.
Initial conversation went very well with him. His suggestion was to first and foremost send him my Yank so he could diagnose if and what the actual issue was. Converter was in poor shape as expected so we figured out my needs. We decided on an 8" non lockup converter that he would build from scratch. I do not daily drive the car so locking the converter was not a big issue for me. My trans temps on the highway are more than acceptable without the lockup I see 180 on my gauge. I have my sensor in the pressure port so it's a good 10-15 degrees less than that as an actual average temp.I have had this converter in for a couple of months now and figured I'd give some feedback. I dont have a track date until November but i've driven this car long enough to know my current best is going to be surpassed without any question in my mind.
The 1st place I noticed a difference was shifting into 3rd gear at WOT the car pulls much harder. It pulls harder everywhere else as well seems to really put power to the wheels more forcefully. Now this is comparing a hurt Yank and I realize this. I think over the last couple of years the Yank has gradually lost little by little not making it as noticeable to me so now I put a fully functional unit in and boy were my eyes opened.
I am VERY pleased overall with my experiance with Chris and Circle D and would recommend them to anybody out there. The customer service is A+ he explains all the little extra things he does to his converters to make them strong and how the combination of parts gets him to his converter designations. I'm confident my car will drop numbers this November to put it amongst some of the fastest stock shortblocks out there.

John
Reply
Old Sep 6, 2008 | 06:41 PM
  #2  
TXZ28LS1's Avatar
TECH Senior Member
iTrader: (5)
 
Joined: Mar 2004
Posts: 6,163
Likes: 3
From: Classified
Default

glad your enjoying the verter. that definitely says alot about circle D with you liking there verter to yank. espeically yank having a reputation as being one of the best in the business.
Reply
Old Sep 6, 2008 | 07:21 PM
  #3  
bgblockelcamino's Avatar
9 Second Club
iTrader: (9)
 
Joined: Jan 2007
Posts: 793
Likes: 0
From: Pittsburgh
Default

i am trying ot save up some more cash to buy a convertor from circle d. i will be buying from them when i get a chance. he has anwered every question without hesitation.
Reply
Old Sep 7, 2008 | 01:59 AM
  #4  
kdavis's Avatar
11 Second Club
15 Year Member
iTrader: (14)
 
Joined: Jun 2007
Posts: 840
Likes: 1
From: Encinal/Kingsville, Texas
Default

i love my circle d converter. best one i have ever had
Reply




All times are GMT -5. The time now is 09:38 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE