Another very mild 440 build.....

thesiren74 said
Damn good info because im putting stealth heads on my 413, 8.65.1 with 452s so those should help! 230° @.050 .480 lift hopefully be 400+

Have you mocked the heads up to see if the valves clear the bore ? I know a 4.250 bore is a bit small for stealth heads