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Torque Converter for GM 4L80E [2400-2700 RPM]
555-60469
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Items You Need
GM 4L80E/4L85E
| Performance Torque Converter General Application Chart * | |||
| Advertised Camshaft Duration | Rear Gear Ratio | Engine RPM Range & Compression Ratio | Converter RPM Stall Speeds ** |
| Stock to 260° | Stock to 3.23 | 1000-4600 8 to 9.5 | 1500 to 1700 |
| Stock to 265° | Stock to 3.23 | 1400-5000 8 to 9.5 | 1600 to 1800 |
| 265° to 280° | 3.00 to 3.73 | 1600-6000 9.5 to 10.5 | 2200 to 2400 |
| 280° to 300° | 3.55 to 4.56 | 2000-6500 9.5 to 11 | 3000 to 3400 |
| 280° to 310° | 3.73 to 4.88 | 2800-7000 10 to 11.5 | 3500 to 3800 |
| 290°+ | 3.73+ | 3400-8000 10.5 to 12 | 3500+ |
*This chart is a guideline. The stall speed may vary in your application.
**Recommended for use with Small Block engines only
FAQ
How do I select a torque converter stall speed?
- Choosing the right torque converter stall speed involves considering your engine's RPM range and camshaft duration. Stall speed is the point at which the torque converter transmits power to the transmission. Opt for a stall speed that matches your engine's torque curve and intended usage.
Do I need a new torque converter with a high performance cam?
- Yes, a high-performance camshaft often requires a new torque converter. Camshaft duration affects engine performance and RPM capabilities, necessitating a torque converter with a compatible stall speed for efficient power transfer across the RPM range.
Do rearend gears matter when selecting a torque converter?
- Rearend gears are crucial in torque converter selection. The gear ratio influences engine RPM and stall speed requirements. Higher gear ratios can accommodate higher stall speeds, while lower ratios may require lower stall speeds for optimal performance. Match the stall speed with the gear ratio for efficient power transfer.
What does a high stall converter do?
- A high stall converter allows the engine to reach higher RPM before engaging the transmission. This enhances acceleration, particularly beneficial in racing or performance applications where quick throttle response and higher RPM ranges are essential.
Specifications:
Will this work with a 5.7/350sbc
Is it a 2” or 2.5 hub length?
Will this fit the Flywheel on a 2001 LQ4 engine?
What is the Torque Converter Bolt Circle (in)
Will this fit in a 4l80 swap with the stock lm7 flex plate without clearance issue?
Will this fit in a Big Block Chevy/4l80e? Or is the crank pilot extended for an LS engine?
Will this work with a LS LY6 engine
Is for 4wd or 2wd?
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