There is quite a lot of information on these engines...but to quote price...it's like Ebay... "They got to want it BAD"! "Poly" heads are less costly both in manufacturing and maintaining as they are NOT expected to perform like the Hemi we all remember...of the 426ci variety that is! _http://www.allpar.com/mopar.html_ (http://www.allpar.com/mopar.html) Johnnie & Lisa Lawson Team Chevelle # 0145 ' 72 Chevelle SS "Cheaptrick"
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