I believe I used the same gasket. That # seems familiar. I had to cut/punch out that part of the gasket that covered 25% of the coolant chamber. My block is also a 72 and that is what I remember doing to get it to work.

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[URL="http://www.spalisautodetailing.com"][SIGPIC][/SIGPIC]www.spalisautodetailing.com[/URL]
347 Stroker/XE284H(284/296 dur, 240/246 dur @ .050), BG 650 VS Speed Demon, Ported Victor Jr intake, Jack Roush World Jr Heads (ported from 180cc to [B]195cc[/B])(upgraded to 2.02/1.60 valves) 260cfm/190cfm @ .550 lift, 11:1 comp... 450-475HP