Originally Posted by 71GTX471
I have several sets of NOS 452 heads in both configurations,15/16 plug & 5/8 plug with steam/coolant passages,if your eng.has the 5/8 plugs you can add the corresponding steam/coolant holes to any 440 block with out them,so all you need is a good 440 block.


Yes Chrysler sold them off for $20 each clearing out the old stock in the parts depot

Tom ,

2011 Ram 3500 C&C Diesel
2009 Challenger R/T
1971 Challenger Conv. 511/4 speed
1970 Challenger R/T 503/727