TCI Stall Speed Ratings
This chart from TCI shows stall speed ratings for its converters based on camshaft and rear-axle gear ratios. While the chart is based on TCI's series of converters, the specifications are good general guidelines for those types of converters regardless of manufacturer.
(Chart courtesy of TCI)
TCI Torque
Converter Series |
Adv. Camshaft
Duration |
Rear Gear
Ratio |
Engine
Characteristics |
Expected
RPM |
Stall Speeds |
| |
|
|
|
Small Block |
Big Block |
| Sizzler |
Stock to 260 degrees |
Stock to 3.23 |
Smooth Idle |
1,500 to 1,700 |
1,000 to 1,900 |
| Saturday Night Special |
Stock to 265 degrees |
Stock to 3.23 |
Smooth Idle
stock comp. ratio |
1,600 to 1,800 |
1,800 to 2,000 |
| Breakaway |
265 degrees to 280 degrees |
3.00 to 3.73 |
Fair Idle
mild modification |
2,400 to 2,600 |
2,600 to 2,800 |
| Streetfighter |
280 degrees to 300 degrees |
3.55 to 4.56 |
Rough Idle large fuel system raised comp. ratio |
3,000 to 3,500 |
3,400 to 3,800 |
| Super Streetfighter |
280 degrees to 310 degrees |
3.73 to 4.88 |
Rough Idle large fuel system raised comp. ratio top end power |
3,500 to 4,000 |
3,800 to 4,200 |
