408 stroker head gasket recommendation

bricud said
With the trick flow heads, they require the Harland Sharp Heavy-Duty Roller Rockers S72026K. I was trying to determine if simply blocking the holes is enough. Some have said so but I wanted another opinion.

The cam I am running is 286/294 duration (236/242 @ .050), with .544/541 lift, but running 1.6 rockers makes it .581/.578. The quench will be .020 plus head gasket thickness. If I run a .028 thickness head gasket it will be .048 but wondering if anyone has any recommendations on this application.

Not sure if that's quite big enough cam to overcome 10.6:1+ with 91 octane.

The 416" I have: aluminum edelbrock heads, .040 quench, 274/280 dur (236/[email protected]), with .502/.511 lift. I have 9.7:1 measured compression. It’s on the edge of detonation. On 95+ deg days up steep mountain it will slightly ping on 91 octane.

Run 10.7 or 11 and you’ll just be retarding timing and loosing the HP you thought you gained. And taking chance of beating up the motor.