You may either grind the dowel pin flush or drive it back toward the engine.

Airboat drive units. Drive units lower assembly. Inspect the face of your engine block for a buildup of paint. The CH-3 models can bolt to GM V-8 Small Block V-8 Big Block and GM Diesels.

CH-2 models are used on 12 to 17 airboats. CH-4 models are used on 15 and larger airboats. CH-3 Drive Unit 231 ratio w 1256-80-127 HPPD Plus Belt.

CH-3 models are used on 15 and larger airboats. In 1989 Robert R. The available ratios for a CH-3 belted airboat drive unit are.

The belts for CH-2 models are 4 wide and can use HPPD Plus or Blackhawk belts which are rated 60 stronger than the Standard HPPD Plus style. The CH-2 Airboat Reduction Drive Units are designed for V6 V8 and small block GM and Chevrolet engines. The ratio for a.

The CH-2 airboat drive unit is our 4 wide belt drive system. The CH-2 airboat drive unit is our 4 wide belt drive system. Patent for his invention which is the Airboat Belted Reduction Drive Unit.

Some parts are heavier. The belted drive unit allows the engine to achieve its maximum sustainable rpms while turning the propeller at its normal rpm to increase thrust and reduce the noise. We commonly refer to our belted transmissions as drive units or airboat drive units.