John'89L98

I'm just wondering if someone can give me a solid answer on the differences between the stock converters in the 305 and 350 700R4's?

I'm thinking it's a matter of stall RPM (305=higher, 350=lower), but I'm not sure. Also, are there any differences between the converters for different cars (Caprices, Camaros, T/A's, etc.)?

As always, any input on this would be greatly appreciated. Thanks. - John '89 L98

Kevin91Z

iTrader: (1)

I think they're exactly the same regardless of engine.

Also, I know the f-body stall speed is about 1600 rpms. You can get one for a Corvette that is 2000 rpms.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
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John'89L98

Really? I was always under the impression that they were different. I guess I don't have to wait to by another torque converter then... Thanks. - John '89 L98

Apeiron

They probably do use the same converters, but the extra torque of the 350 would make it stall slightly higher.

Jay727

I had a 700R4 converter rebuilt and they let me watch, there is a number stamped on it (mine was 7) it's stamped around the entire circumference of the converter, they looked it up in a book and it stalled at 1675 rpms, I tried glancing at the book and saw stall speeds ranging from 1200 up to 2000rpm's depending on application, usually low power engines stall higher and high power engines stall lower. Most aftermarket converters are remanufactured (like TCI and B&M) they take a high stall converter designed for a low output engine and modify it to handle more power. It is true that the same converter will stall higher behind a powerful engine and lower behind a weaker engine.