Mastodon Small Block Chevy – Big Block Chevy 160 Degree Thermostat W/Gasket

Mastodon 160-degree thermostat with gasket for Small Block Chevy and Big Block Chevy applications. The 160°F (71°C) opening temperature is ~30°F cooler than stock — useful on boosted, high-compression, or high-output engines where lower coolant temperature reduces detonation risk and lets you run more ignition timing.

Note: a cooler thermostat only sets the minimum coolant temperature. It won't reduce peak temps if your radiator/fans are undersized for the application — make sure cooling capacity is up to the job.

Specifications:

• Application: Small Block Chevy, Big Block Chevy
• Opening temperature: 160°F (71°C)
• Includes: Thermostat + gasket
• Best for: Boosted / nitrous / high-compression / high-output builds