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

Circle D - converter options explained

Thread Tools
 
Search this Thread
 
Old Nov 24, 2008 | 11:03 AM
  #21  
Circle-D's Avatar
Thread Starter
FormerVendor
iTrader: (21)
 
Joined: Feb 2006
Posts: 2,474
Likes: 14
From: Houston, TX
Default

Sorry about the confusion.

2 different things to consider on a Circle D converter. Durability and Stall.

Durability - This is the Stage I, II and III. Different HP levels take different parts. Most of the billet parts are made in house and are a Circle D exclusive.

Stall - This is the "2C" or "4C" rating. These equate to a combination of pumps and stators. It is a chart I made years ago and is a Circle D secret of exactly what they represent.

So it is possible to get a "2C"(Approximately a 3200) rated stall in either the Stage I, II or III. The more HP you have the higher stage you need. Hope that helps.

Chris
Reply
Old Nov 24, 2008 | 11:50 AM
  #22  
built408's Avatar
TECH Fanatic
iTrader: (10)
 
Joined: May 2007
Posts: 1,784
Likes: 1
From: Fort Worth Texas
Default

On your stage 3, you say "We challenge you to try to break it". Do you offer a warranty to back this up? Because another company (sponsor here so can't mention any names, but rhymes with stank) gave me the same challenge and I broke it 4 times under warranty, and it broke again shortly after going out of warranty. And the last time I got it back, I swear the stall speed was about 2600, not the 3600 it originally was.
Reply
Old Nov 24, 2008 | 01:23 PM
  #23  
Circle-D's Avatar
Thread Starter
FormerVendor
iTrader: (21)
 
Joined: Feb 2006
Posts: 2,474
Likes: 14
From: Houston, TX
Default

Warranty on the Stage III is 3 years. Nobody has broken one yet. We have some guys with 800+hp with WOT lock up, still going strong.

Chris
Reply
Old Nov 24, 2008 | 04:10 PM
  #24  
built408's Avatar
TECH Fanatic
iTrader: (10)
 
Joined: May 2007
Posts: 1,784
Likes: 1
From: Fort Worth Texas
Default

I might have to put that to the test. I don't make 800 hp, but it weighs about 4750lbs. And I don't even lock it up at WOT.
Reply
Old Nov 25, 2008 | 01:23 AM
  #25  
SS DNA's Avatar
TECH Addict
iTrader: (7)
 
Joined: Apr 2004
Posts: 2,187
Likes: 0
From: NorcaL
Default

Circle D,

Thanks for the clarifying. I think a 2C would be fine for me. As for Lock Up, what does this means to those who dont know ?
Reply
Old Nov 26, 2008 | 06:38 AM
  #26  
HTX's Avatar
HTX
TECH Regular
iTrader: (1)
 
Joined: Sep 2006
Posts: 495
Likes: 0
Default

Hey man. I am soon to purchase a new converter. My old one was a VIG 3200 and was happy with it. I am going with 3.73s in this car( vs the 3.23s in my old car) so i may want a little more of a stall.

What do you recomend for people who like to roll race?

BTW i live in your area so there is a good chace i will make a purchase from you. Alot of guys in Houston like your work.
Reply
Old Nov 26, 2008 | 11:40 AM
  #27  
Circle-D's Avatar
Thread Starter
FormerVendor
iTrader: (21)
 
Joined: Feb 2006
Posts: 2,474
Likes: 14
From: Houston, TX
Default

Originally Posted by HTX
Hey man. I am soon to purchase a new converter. My old one was a VIG 3200 and was happy with it. I am going with 3.73s in this car( vs the 3.23s in my old car) so i may want a little more of a stall.

What do you recomend for people who like to roll race?

BTW i live in your area so there is a good chace i will make a purchase from you. Alot of guys in Houston like your work.
HTX, for a good roll race you need it to flash high to get you converter in the power band. I like the 4C - 3800 - they will work great from a roll or at the track. Stop by some time and I can show you everything that goes in them.

Chris
Reply
Old Nov 26, 2008 | 11:40 AM
  #28  
Circle-D's Avatar
Thread Starter
FormerVendor
iTrader: (21)
 
Joined: Feb 2006
Posts: 2,474
Likes: 14
From: Houston, TX
Default

Originally Posted by built408
I might have to put that to the test. I don't make 800 hp, but it weighs about 4750lbs. And I don't even lock it up at WOT.
Ready when you are!

Chris
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Dec 1, 2008 | 07:22 AM
  #29  
Circle-D's Avatar
Thread Starter
FormerVendor
iTrader: (21)
 
Joined: Feb 2006
Posts: 2,474
Likes: 14
From: Houston, TX
Default

A bump for the week for anyone that missed the info.

Chris
Reply




All times are GMT -5. The time now is 11:24 PM.

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 | 2026-06-09 14:55:56


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