Circle D 4c Results
Thread Starter
Racer
Joined: Aug 2007
Posts: 444
Likes: 6
From: Richmond Texas
Circle D 4c Results
I went out to Houston Raceway Park last night for the 1st time since installing a new stall converter. I went with the Circle D 4c which is roughly a 3800rpm stall with an aggressive shift extension. Bad new is I only got 1 pass before it started pouring.
2005 C6 LS2
Stock 4L65
2.73 Gear
Circle D 4c
232/234 600/600 112 (Torquer 2)
Speed Engineering LT's
No Cats
B&B Bullets
Vararam
Powerbond UD Pulley
C4 Sawblades with 28/10/17 Hoosier Slick
Pat G Tune
Previous best was a 12.1@119 with a 1.9 60, I don't have the slip but that was my previous best last spring with a DA of roughly 800'.
New best is a 11.341@119.75 with a 1.625 60' with a DA of 2300', went 7.2 to the 1/8.
Like I said I only got 1 pass and this was leaving off idle, I think with a few more passes figuring out what the converter likes I can easily get the 60' into the 1.5's and my ET lower into the 11's. In winter I think it will do high 10's as is but I have plans for a Fast 102 and TB here in the next few weeks. Anyway shout out to Circle D for making the BEST converters on the market I don't care what anybody says. I gained 8 tenths on my very 1st pass and have no doubt I can chip away with that with some more seat time. Anybody wondering about drive-ability I lost about 1.5-2mpg after installing the converter and had to add a 14400 cooler (bypassed rad) to keep the temps happy but the brutal acceleration at almost ANY speed makes it well worth it.
2005 C6 LS2
Stock 4L65
2.73 Gear
Circle D 4c
232/234 600/600 112 (Torquer 2)
Speed Engineering LT's
No Cats
B&B Bullets
Vararam
Powerbond UD Pulley
C4 Sawblades with 28/10/17 Hoosier Slick
Pat G Tune
Previous best was a 12.1@119 with a 1.9 60, I don't have the slip but that was my previous best last spring with a DA of roughly 800'.
New best is a 11.341@119.75 with a 1.625 60' with a DA of 2300', went 7.2 to the 1/8.
Like I said I only got 1 pass and this was leaving off idle, I think with a few more passes figuring out what the converter likes I can easily get the 60' into the 1.5's and my ET lower into the 11's. In winter I think it will do high 10's as is but I have plans for a Fast 102 and TB here in the next few weeks. Anyway shout out to Circle D for making the BEST converters on the market I don't care what anybody says. I gained 8 tenths on my very 1st pass and have no doubt I can chip away with that with some more seat time. Anybody wondering about drive-ability I lost about 1.5-2mpg after installing the converter and had to add a 14400 cooler (bypassed rad) to keep the temps happy but the brutal acceleration at almost ANY speed makes it well worth it.
Last edited by sprayed1998; Sep 28, 2019 at 02:00 PM.
Racer
Joined: Sep 2013
Posts: 469
Likes: 62
From: coconut creek, fl
that's bad *** et for just cammed ls2 most likely wil;l get in the 10's
just curious where you still stock converter with that aggressive cam?
I just got the yank pas3400
did you get a tranny tune for that converter?
just curious where you still stock converter with that aggressive cam?
I just got the yank pas3400
did you get a tranny tune for that converter?
Last edited by veneno; Sep 28, 2019 at 08:01 PM.
Burning Brakes
Joined: Jan 2019
Posts: 1,214
Likes: 215
From: Dallas, Tx
yes great question I want to know as well, also im thinking about the same Yank PAS stall but maybe go with the 3800 version not sure just yet
Thread Starter
Racer
Joined: Aug 2007
Posts: 444
Likes: 6
From: Richmond Texas
I did run my stock converter for a while before putting the stall in. It ran fine other than pushing past the brakes a tad at idle. I did have a tune update done after having the converter put in.
Thread Starter
Racer
Joined: Aug 2007
Posts: 444
Likes: 6
From: Richmond Texas
Went back last night and got it down a little more.
1.624 60'
7.212@96.33 1/8
11.280@119.89 1/4
Still cant even explain how badass this converter is. Ill report back in a few months when I go back in the cold air. DA last night was 2400. Ill have a fast 102 by then as well.
1.624 60'
7.212@96.33 1/8
11.280@119.89 1/4
Still cant even explain how badass this converter is. Ill report back in a few months when I go back in the cold air. DA last night was 2400. Ill have a fast 102 by then as well.
