Headgaskets Aluminum Heads

Bakerlite said
He's never tested to see how much they have moved.

I've been using stock replace pt8553s cranking 185lbs or so, nothing moved. I guess if someone can't tune for **** or even set a 'reasonable' limit/expectation..theyll crank that distributor counter clock wise till they blow all the fire rings and or pistons out if it...and blame the gasket.lol
Even goofballs at Mopar Muscle used to do that, on the dyno. They were just pushing products . They knew they were turning the timing up too much..or they got greedy and ignorance took over... lo and behold the legend of the 1008s.." it's a must have for 10.1 comp"..lol every reader parroted that years....its practically the same gasket as the pt8553 ..aust thinner with a little metal ring inside outside of the fire ring.
All said n done..It always helps to know what you're building and use it for what it's intended. Lol