Actually the mid 80 351W have same valves and ports as 302. Yes definately put those heads on. As stated the head bolt hole on 289 are 7/16 and 351 1/2 so youll have to drill out holes on head. Youll probably pick some compression as early heads had smaller chambers. Make sure to swap rocker arms with the heads as they are different
Bill
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Bill Heiser
90 Convertable 5.0 LX, ported E7s w/ THumper valve job, TFS street, FR 65mm TB, B cam w/1.7 cobra rockers, kirban AFPR, Mac CAI, Mac Headers, off road h, 3 chamber flows, Crane ign. box, 3:73s, Art Carr AOD & 2600 converter
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