zz409-zz9x

04-27-2007, 08:41 PM

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zz409-zz9x

witch one would u pick for a 383 with ported heads and bigger valves

04-27-2007, 09:36 PM

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Neither
It would help others if you listed the specs for each but again I will say I recommend neither.

04-27-2007, 09:39 PM

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never heard of those, who makes them?

04-27-2007, 10:22 PM

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tpis makes them,i would use a comp,236/242 on a 112,would be my pick