Coverter slippage
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Laughing Gas
Joined: Feb 2003
Posts: 1,234
Likes: 3
From: In the woods of Oregon
Coverter slippage
Just wondering, about what percentage does a converter slip in a stock application. In the gear ratio calculator (on this site, in the tech articles) it has .05. I believe my torque converter slipps more than that, and its a brand new low stall. I do have a healthy engine in front, but cruising shouldn'y effect the slipp percentage with a larger engine. just wondering if there where any hard or fast rules. I have 3.5 gears but it has the rpm at cruise of a much higher (numericaly) gear.
I know everbody say's if you run this tire size you have to run this deep of a gear. But those charts and stuff assume a 350ci engine (SBC, most likely) and a manual trany, both witch require a much deeper gearset than a large ci engine with a auto. The auto multiplies torque, while a clutch does not, hence the need for a flywheel wich stores momentum to overcome the inicial acceleration from a stop. Just curious about your guys thoughts.
.Thanx.
I know everbody say's if you run this tire size you have to run this deep of a gear. But those charts and stuff assume a 350ci engine (SBC, most likely) and a manual trany, both witch require a much deeper gearset than a large ci engine with a auto. The auto multiplies torque, while a clutch does not, hence the need for a flywheel wich stores momentum to overcome the inicial acceleration from a stop. Just curious about your guys thoughts.
.Thanx.
Elder User
Joined: Nov 2005
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Originally Posted by ivanribic
My converter in the C6 tends to slip 300-400rpm on the highway. I do have a 2500 stall which may affect that a bit. I've heard it mentioned a few times before that 200-300rpm is the norm.
Thread Starter
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Laughing Gas
Joined: Feb 2003
Posts: 1,234
Likes: 3
From: In the woods of Oregon
Cool Beans! I have a low stall witch is supposed to be about 500rpm lower than stock, but I still have a normal stall speed with my mild 400. Just trying to learn about stall/torque multiplication and its effects on final drive ratio. 35" tires and 3.5 gears would be realy long legged for a stick, but for a auto it pulls em fine and I have a decent cruise rpm on the freeway. My truck is also lightened to about 4000lbs and that has a efect on it all also. Thinks for you guy's input.
