COOLANT FLOW MODIFICATION: Tech Tip

Fig. 3.10.22a

 

Fig. 3.10.22b

  The standard Small-Block Chevrolet cooling system is not adequate for an engine that develops more than 500 HP. The stock cooling system is basically divided into two halves. The Left and Right are completely isolated in the block and heads. When the two streams of pressurized coolant from the Left and Right banks try to exit out the engine and return to the radiator to cool the streams collide at the thermostat housing while trying to make the 90-degree turn.

A simple solution to this problem is to tap the end of the cylinder heads and "Y" them together so they do not conflict with each other on there way to the radiator. In Fig. 10.22a is a view of the "Y" tube which was available in a complete kit from Moroso.

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