1.80 Ratio Extreme Gear Set
Part No. 180S3-24K

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Sonnax offers complete GM Powerglide planetary gear sets in a variety of gear set options and configurations to ensure you get the performance you want without overpaying or sacrificing quality.

Track-proven to 3,000 HP, Sonnax Extreme gears build the finest quality Powerglide planetaries in the world, when every component has to be refined for maximum durability in the most demanding applications. 1.80 Ratio Extreme gear set 180S3-24K features Sonnax premium sun and pinion gears that also undergo the same advanced processing used in Formula 1, NASCAR® and other high-end professional racing circuits.

  • Top-quality sun and pinion gears undergo additional advanced processing for unmatched durability
  • Ring gear is pre-drilled for the Sonnax stabilizer system to prevent vibration and broken reverse friction plates
  • 24-Tooth billet drum flange is broached and matched to the sun gear for a precise press fit, no welding required
  • Flange is designed to work exclusively with Sonnax clutch drums

See chart and specs below to determine if this planetary assembly suits your application, or dial in options here to choose your build.


Track-Proven to 2,000 HP


Track-Proven to 3,000 HP

Sonnax Warranty 2 Years (Gears Only) 2 Years (Gears & Shaft)
Gear Material 9310 Suns & Pinions 9310 Suns & Pinions
Gear Process Premium
Advanced (Learn More)
Shaft Material 4340 300M
Shaft Splines Cut Spline Rolled Spline
Drum Flange 12-Tooth 24-Tooth
Ring Gear Standard Maximum Duty

Applies to planetary assembly kits only

  • Short Pinion Gears (3)
  • Long Pinion Gears (3)
  • Front Sun Gear
  • Drum Flange 24-Tooth
  • Rear Sun Gear
  • Ring Gear
  • Gear Process Level: Extreme
  • Ratio: 1.80
  • Flange Tooth Count: 24
  • Powerglide 1.80 Ratio Extreme Gear Set 180S3-24K

I run a Sonnax 1.80 straight cut gear set and have had no problems or issues, plan on purchasing another real soon for another car we are putting together. Thanks Sonnax for the reliability and durability in your product.

R. Merrill Affordable Transmission Brooklyn Park, MN