Closed Cooling Systems - Complete Closed Cooling Kits

Big Block Chevy Half System Closed Cooling Kit Up To 650HP - Copper / Bras

• Deck Height: 9.8"
• 650 hp
• Fits: 454 CID through 540 CID engines. Half Kit cools engine only.

While there are numerous universal OEM closed cooling kits, this is not one of those. This is a true custom engineered and developed closed cooling system designed around traditional Std. deck height 9.8" Big Block Chevrolet applications. The kit is perfect for the 454 CID through 540 CID engines making up to 650 horsepower. We offer the closed cooling tank in a paint-to-finish primed coated version. The kit comes with tank, brackets, hoses, and thermostat housing.This High Performance Closed Cooling kit is designed for applications with horsepower levels to 650HP.

These kits are designed to be used with the Hardin Marine serpentine drive kits, can be used with standard V-Belt pulleys if using 625-8108 power steering bracket.

Big Block Chevy Full Closed Cooling Kit Up To 650HP - Copper / Brass

• Deck Height: 9.8"
• Length: 33"
• 650 hp
• Fits: 454 CID through 540 CID engines. The 625-4580 is a full system, cooling the engine and manifolds.

While there are numerous universal OEM closed cooling kits, this is not one of those. This is a true custom engineered and developed closed cooling system designed around traditional standard deck height 9.8" Big Block Chevrolet applications. The kit is perfect for the 454 CID through 540 CID engines making up to 650 horsepower. We offer the closed cooling tank in a paint-to-finish primed coating. The kit comes with tank, brackets, hoses, and thermostat housing. This High Performance Closed Cooling kit is designed for applications with horsepower levels to 650HP.

These kits are designed to be used with the Hardin Marine serpentine drive kits, can be used with standard V-Belt pulleys if using 625-8108 power steering bracket.

These are the same coolers OEM Engine manufactures use on their LSA Marine engine conversions. The OEM manufacturer builds their own bracketry and it IS NOT available. So if you plan on buying these units each has a mounting bolt pad but you will need to build YOUR OWN bracketry. If you do not understand closed cooling seek a professional engine builder. There is NOT additional specs available what you see is what we sell we have attached plumbing instructions and some diagrams to assist. They are sold as tanks ONLY for both the engine and the intercooler. Seek a knowledgeable professional for installation.

LS1, LS2, LS3 and LS6 Closed Cooling Kit - Copper / Brass

While there are numerous universal OEM closed cooling kits, this is not one of those. This is a true custom engineered and developed closed cooling system designed around new LS1, LS2, LS3 and LS6 applications. The kit is perfect for engines making up to 650 horsepower.

We offer the closed cooling tank version with a pre-primed coat, where you can paint-to-finish. This allows you to customize it to your engine for the ultimate in appearance and durability. This High Performance Closed Cooling kit is designed for applications with horsepower levels to 650HP.

The Kit comes with: Tank, Brackets, Hoses.

NOTE: Will not work with port side mounted sea pumps 625-4116, 625-4117.

These will NOT work with IMCO, MP, or front inlet exhaust systems.
These WILL work with Seaward, Hardin Cyclone, Lightning and CMI exhaust systems