Description
Two larger pulley sizes (4.220″ and 4.720″) are available, designed to slow the water moving through the radiator to allow it time to cool – an important factor on any high-RPM race engine.
For reference, the original stock pulley measured 3.875″.
Please note:
On installation you must first check for clearance between the pulley and cylinder head, especially where the head has been heavily skimmed.
This is the 4.220″ Pulley
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