Drivetrain Clutch, Torque Converter, Transmission, Driveline, Axles, Rear Ends

What's the deal with getting the right stall conv.?

Old Jul 18, 2004 | 04:24 AM
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Question What's the deal with getting the right stall conv.?

I was always under the asumption that you should match your stall conv. to the size of your cam. I see most, if not everyone here, seems to put in 3200 Vig, 3500, etc. Is there any truth to that statement?
Old Jul 18, 2004 | 10:24 AM
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Originally Posted by ishz28
I was always under the asumption that you should match your stall conv. to the size of your cam. I see most, if not everyone here, seems to put in 3200 Vig, 3500, etc. Is there any truth to that statement?
Best way is to talk with one of the companys that do a lot of converters for our cars (Edge, Midwest, TCI, Vigi, Yank) and tell them all the specs of your combo. Then, depending on how streetable you want it, you discuss with them what size stall would be most suitable for your application.
Old Jul 18, 2004 | 10:32 AM
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its also that, IMO, with a stall converter it is better to go bigger than smaller, so people go big right out of the box, just to make sure they didnt go too weak
Old Jul 18, 2004 | 10:39 AM
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Originally Posted by LT1Squirrel
its also that, IMO, with a stall converter it is better to go bigger than smaller, so people go big right out of the box, just to make sure they didnt go too weak
If you go to big on the converter then it's going to flash past your peak torque, thus losing performance.
Old Jul 18, 2004 | 01:03 PM
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Originally Posted by Loadre
If you go to big on the converter then it's going to flash past your peak torque, thus losing performance.

I was goning to say something like that. When my engine was rebuilt, i asked the mech why he put in such a small stall (2000). He said it matched the cam (227). I told him I wanted a light to light car. He also told me to big a cam and it'll drive like a marshmellow.
Old Jul 18, 2004 | 05:48 PM
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Re: What's the deal with getting the right stall conv.?

Originally Posted by Loadre
If you go to big on the converter then it's going to flash past your peak torque, thus losing performance.

Definately! I installed a 4200 Vigilante behind a stock head/cam 305 engine It definately woke up off idle acceleration but honestly it was flashing right past the torque peak which was at 4000rpm. A 150hp shot of nitrous made matters even worse and locking the converter via a switch was what made it go from 13.30's to 12.80's. And that was locking it ONCE the car was in third gear. It would drag the rpms down into the useable TQ range Ah well it was just for fun to see the affects anyways.
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