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0603htp Hawk 11 Z

A 255cc intake port is found in the LS7X head and the opening of the port is identical in dimensions to the GM LS7 head; therefore the stock LS7 intake manifold will match right up. These heads are made from 355-T6 aluminum and are advertised as an "improved replacement for LS7 and C5R applications."
World Products - LS7X - World At War

 A 255cc intake port is found in the LS7X head and the opening of the port is identical in dimensions to the GM LS7 head; therefore the stock LS7 intake manifold will match right up. These heads are made from 355-T6 aluminum and are advertised as an "improved replacement for LS7 and C5R applications."  View Related Article

 

 

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