The CH-3 Airboat Belted Reduction Drive Unit is designed for a large block GM, Chevrolet, and Cadillac engine. The CH-3 models can bolt to GM V-8, Small Block, V-8 Big Block, and GM Diesels. CH-3 models are used on 15′ and larger airboats. 

The available ratios for a CH-3 belted airboat drive unit are: 

• 1.774 to 1
• 2 to 1
• 2.3 to 1
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• The drive belts for CH-3 models are 5″ wide and can use HPPD Plus or Blackhawk belts which are rated 60% stronger than the standard HPPD Plus style.
• The CH-3 models are similar to the CH-2 models but are stronger and use a wider belt.
• The drive units we manufacture carry a 100 hour factory warranty.
• Our a CH-3 models are rated for 600 horse power engines.
• Great for government and law enforcement agencies. A much quieter, more powerful system that requires minimal maintenance.
• This is an ideal unit for hunting, fishing, and personal airboating.
• Our belted reduction drive units are a perfect fit for all airboating applications. Examples: Seismograph, Military, Hunting, Fishing, EPA, Law Enforcement, Aquatic Control, Tour Boats and Pleasure Craft.
• All of our airboat drive unit products are manufactured under Patent # 4884949 and 6540570B1

The CH-4 Airboat Belted Reduction Drive Unit is designed for a large block GM, Chevrolet, and Cadillac engine. The CH-4 models can bolt to GM V-8, Small Block, V-8 Big Block, and GM Diesels. CH-4 models are used on 15′ and larger airboats. 

The available ratios for a CH-4 belted airboat drive unit are: 

• 2.52 to 1
• 2.67 to 1

The drive belts for CH-4 models are 5″ wide and can use HPPD Plus or Blackhawk belts which are rated 60% stronger than the standard HPPD Plus style.

• The CH-4 models are similar to the CH-2 models but are stronger and use a wider belt.
• The drive units we manufacture carry a 100 hour factory warranty.
• Our a CH-4 models are rated for 600+ horse power engines.
• Great for government and law enforcement agencies. A much quieter, more powerful system that requires minimal maintenance.
• This is an ideal unit for hunting, fishing, and personal airboating.
• Our belted reduction drive units are a perfect fit for all airboating applications. Examples: Seismograph, Military, Hunting, Fishing, EPA, Law Enforcement, Aquatic Control, Tour Boats and Pleasure Craft.
• All of our airboat drive unit products are manufactured under Patent # 4884949 and 6540570B1