Reply to "Valve train, intake manifold and header questions"

George PAdmin.

Its not clear to me what valve train question you had.

One difference between the Performer & Air Gap manifolds, the Performer is heated with exhaust heat, the Air Gap doesn't have provision for that. Something to consider anyway.

If those are truly Australian heads there shall be extra material surrounding the exhaust port flanges, allowing any header to bolt up & seal around the port. So technically you could bolt any header to the heads. In general, the 2V heads, with 1.65" exhaust valves & smaller ports (smaller compared to the 4V heads) will tend to work best with smaller tube headers ... 1-3/4" OD for example.

-G

8/14/1211:38 AM

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