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Old 06-08-2008, 06:38 PM   #1 (permalink)
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Default port matching

i have an old pair of double bump heads, which are small valve, but appear to have been fairly well hogged out on the inlet ports. they will be going on a mild street 350, prolly 278 cam, q jet, extractors and standard compression flat top forged TRW's ( coz i've got 2 sets of them, that's why )

when i compare the port sizes of the heads to my standard victor junior, the manifold ports look a couple of mm smaller

so should i match the ports, put in the larger valves, both of the above or leave well alone

thanx in advance, johnny
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Old 06-08-2008, 10:25 PM   #2 (permalink)
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Piss the victor off for a rpm air gap otherwise you will have a big hole in your low speed torque curve.
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