1969 351w 4bbl heads are the best factory heads. They are pretty tough to find though.
Why do you want factory heads and not aftermarket?
You could also port & polish stock 351w heads and have larger valves installed for half the price of aluminum heads and flow better than '69 351w heads.
My stock 351w heads are at the shop, as we speak, getting 2.02/1.60 valves installed and also ported & polished.
It's going to cost me about $550-600
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'82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.
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