Tuff Stuff Performance High Flow Thermostat; 180-Degree (53-68 I6/Small Block V8 Corvette C1, C2, C3 & C4)Find parts that fit my vehicle

High‑Performance Cooling Upgrade. The Tuff Stuff Performance High Flow Thermostat boosts coolant flow to 56 gallons per minute—nearly 50 % more than stock units. The 180°F opening temperature ensures your engine reaches its optimal operating point efficiently, while the bypass valve circulates coolant early to reduce warm‑up delay. It’s ideal for classic Corvettes like the 1953‑68 C1–C4 models.

Construction And Appearance. Crafted from robust stainless steel, this thermostat features an oversized center port and reinforced bridge for enhanced flow and strength. Its polished metal finish resists corrosion and looks sharp within the engine bay.

Installation. Installing the 900180 is a moderate DIY job—standard thermostat housing removal applies. Basic hand tools suffice; no drilling is required unless your housing is rust‑seized. Torque to factory specs and use a new gasket to prevent leaks.

Warranty. A limited 1‑year warranty covers manufacturing defects. :content Reference[oaicite:0]{index=0}

Application. This Tuff Stuff Performance High Flow Thermostat 900180 fits 1953-1968 I6/Small Block V8 Chevrolet Corvette C1, C2, C3, and C4 models.

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