Engine Builder
Thunderbolt Engines are Lycoming's brand of high performance, built-to-order power plants for Experimental aircraft. With Thunderbolt engines, customers get a genuine Lycoming engine that is factory built, factory tested and supported - with several popular options of fuel systems, ignition systems, performance enhancements and finishing options. These features come with every Lycoming Thunderbolt engine:

- Balanced rotating system within 0.5 gram (connecting rods, pistons, piston pins)
- Ported and polished cylinders
- Customized paint options
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Thunderbolt-235

Thunderbolt-320

Thunderbolt-580

Thunderbolt-360

Thunderbolt-390

Thunderbolt-540
Engine Options
Thank You!
Thank you for your interest in the Lycoming Thunderbolt engine! A summary of your selected options is listed below.
Engine Details
Automatic Thunderbolt Upgrades Include: Roller Tappet System (Most Models), Crankshaft Dynamic Balancing, Precision Static Balancing (Pistons and Rods to ½ Gram), Port and Polish/ Volumetric Cylinder Matching, Chrome Rocker Box Covers.
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