okay, so I have the wrong set of pistons for the intended use...
Shit happens, but I'm not into the idea of milling those down to get zero deck height (the "bang" happens on top, that meat is there for a purpose, I don't like the idea...)

And after that, checking for valve clearance, wich sure enough will be a problem...

I'm not saying it's going to cheap, but...

The only difference between a 410 and a 390 is the larger crankshaftstroke of 3,98"...this has been a ford-factory idea for stroking up the 390...

Sure enough they didn't actually do all the work on their pistons, just to get the right compressionheight and clearances? Wich again means there is a (like stock) piston available for my intended use!

I'm not looking for special, custom made or forged pistons.... I'm looking for a set that fits...where all the above mentioned issues of clearance and compression are already solved (this was already solved in '66, so the right answer should be lying on a shelf right now!)

My hesitation in doing this myself (eh, I mean the shop) is this: the boring and checking of the oversize job is going to cost me 500...the balancing is going to cost another 1000 (remeber; talking Netherlands now ! ad up 20% for dollarprice...), and this is just that, I never mentioned hottanking, deckstraightness-check, connectingrods check and rods upper bearingjob...

My guess is, that buying a new set of pistons, is actually going to be cheaper than letting them do all that work on getting the ones I have, fit right!

anyone know what pistons, that solved the problem in '66, where used in the 410? and where to get them now?

thanx!

ow! and thanx for all the input up untill now...sure glad I brought this up!