[Rick H]

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I am assuming the large hole is for a big block ?

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No. The larger opening is for any Camaro that was optioned with the VO1 radiator. The Z/28 got the larger radiator automatically. A six cylinder or any of the small blocks with A/C would get the large opening as well. A big block if so ordered with VO1 would get the larger opening as well.

The larger opening was just to let more air flow for the larger radiator.

My survivor with a 307 and A/C has the large opening radiator.

Chuck H, I am still very interested in the rad support. Large or small opening, still interested.

Rick H.