Installed Circle D 3600
Installed Circle D 3600 Stall is a circle D 3600 in my bolt on 99Z with 4.10 gears. Soon to be 373 and heads cam.
Floored it off idle, does it look like its flashing the right RPM?
Floored it off idle, does it look like its flashing the right RPM?
TECH Junkie
Joined: Jun 2008
Posts: 3,194
Likes: 1,377
From: Nitro Alley
Yes it does. 
A stock/ stock-ish LS1 does not produce enough low-speed torque to achieve the rated brake-stall speed.
I am not familiar with Circle-D products specifically... But it looks to be the "softer-hit" type of converter; or that engine is a real dog.
A stock/ stock-ish LS1 does not produce enough low-speed torque to achieve the rated brake-stall speed.
I am not familiar with Circle-D products specifically... But it looks to be the "softer-hit" type of converter; or that engine is a real dog.
With a stock converter, headers, dual exhaust, lid and tune it went 12.80@110
TECH Junkie
Joined: Jun 2008
Posts: 3,194
Likes: 1,377
From: Nitro Alley
330-360 HP in a 4th gen should make that pass.
Low-Speed Torque is what will most greatly effect stall-speed.
That small, higher reving engine does not produce enough power to reach the stall-speed rating.
Low-Speed Torque is what will most greatly effect stall-speed.
That small, higher reving engine does not produce enough power to reach the stall-speed rating.