LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Is this all high stall converters do?

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Old Oct 21, 2004 | 04:11 PM
  #1  
pHEnomIC's Avatar
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From: SE Michigan
Is this all high stall converters do?

I was just wondering if high stall torque converters do anything besides let you get higher rpms off of the line.

Thanks.
Old Oct 21, 2004 | 05:52 PM
  #2  
High-tide's Avatar
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Re: Is this all high stall converters do?

The concept of the stall on the converter is to match the stall to the cam shaft profile to obtain the maximun torque on launch.
Old Oct 21, 2004 | 06:26 PM
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96capricemgr's Avatar
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Re: Is this all high stall converters do?

Torque converters also multiply torque, so yes it is more than just higher revs off the line. You get higher revs off the line which helps the engine reach peak power sooner while doing this they generally also provide greater torque multiplication that stock, so you have a double effect there, plus they help keep the engine in the powerband no more reving way past peak so that you still make good power after the shift, then if you go with a 9.5" unit which I highly recommend they shave a lot of rotating weight which pays off much moreso than dead weight reduction. 9.5" TCs generally weight 26-34lbs, stock 12" is going to be 45lbs.(conservative guess) plus hold more fluid which ups the weight difference even more. From a stock TC to a good 9.5"(Edge, Yank, Vig or there are others but there are bad too so get a specific recommendation) expect a .4 gain or better in the quarter, more if you already have engine mods and can hook.
Old Oct 21, 2004 | 06:37 PM
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Dave89IROC's Avatar
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From: Melvindale, MI, US
Re: Is this all high stall converters do?

Originally Posted by 96capricemgr
Torque converters also multiply torque, so yes it is more than just higher revs off the line. You get higher revs off the line which helps the engine reach peak power sooner while doing this they generally also provide greater torque multiplication that stock, so you have a double effect there, plus they help keep the engine in the powerband no more reving way past peak so that you still make good power after the shift, then if you go with a 9.5" unit which I highly recommend they shave a lot of rotating weight which pays off much moreso than dead weight reduction. 9.5" TCs generally weight 26-34lbs, stock 12" is going to be 45lbs.(conservative guess) plus hold more fluid which ups the weight difference even more. From a stock TC to a good 9.5"(Edge, Yank, Vig or there are others but there are bad too so get a specific recommendation) expect a .4 gain or better in the quarter, more if you already have engine mods and can hook.
just for info, a stock 12" convertor holds over 4 quarts of fluid
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