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#3
Just to clarify, the A5 intakes used on the 1985-1990 roller cam 307s have smaller ports than on other small block Olds motors. The A5 will physically bolt up to the 350, but the port mismatch makes that a worthless swap. On the other hand, the A4 intake used on the 1981-84 307s has full size ports and is a cheap way to lighten a 350 (though the manifold is no better flow-wise than the stock cast iron unit).
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yeahbuddy
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December 19th, 2011 08:40 PM