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Cast iron intakes were less expensive...

February 10 2018 at 11:19 PM
Jeff H.  (Login wsu0702)

Response to 29 lb vs 81 lb

So for mass production (i.e. 428CJ) it was the better choice. 428PI's were very low volume. BTW the cast iron 428CJ intake out-performed the aluminum 428PI in Jay Brown's intake comparison testing.

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