[DAVID GAGNARD]

Scott;

Jack is absoutley correct....C-9 blocks are a little beefer but have a shorter deck height and are becoming very rare as each day goes by. From 70 to 74 the blocks are identical,the only difference is the year they were cast,from 75 on up,they "lightened" the blocks a tad,mostly in the bottom end....Anything from D0 to D4 is good or at least better than the D5 and up.....

Although I know a couple of drag racers that use whatever they can find and run approx. 500 to 750 hp on nitrous and say the newer blocks last just as long as the older ones,so who really knows??????????

Around here, D0 to D4 blocks can be found for 50 bucks or less,so I pick them up when I see them and store them in the corner of the workshop....

Just the other day a buddy who is restoring a 69 Cougar gave my friend a 9" rear end and a complete running 69 351-W out of his parts car with 66,000 miles on it. He going to go thru the motor and put it in his 67 Fastback.... Some people have all the luck...........

David