Does anyone know details and casting numbers for 250 CI heads with four and five smog holes?? We bought a rebuilt head which has four holes but we have five tubes on our air manifold. Unfortunately the old head is gone for core. Thanks, Wilson
Does anyone know details and casting numbers for 250 CI heads with four and five smog holes?? We bought a rebuilt head which has four holes but we have five tubes on our air manifold. Unfortunately the old head is gone for core. Thanks, Wilson
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