the .029 is above deck
the dome volume is what I was missing for the online calculators found on the net, using this one https://butlerperformance.com/n-12872-compression-calculator.html with a 10cc volume for the dome the noted SCR moves from 10.31 to 11.07, changing from a 68cc to a 72 cc for the head and using felpro's range of .049 to .059 for compressed gasket thickness.
Values I used:
bore dia. 4.030 (based on piston size)
stroke - 3.58 (stock)
cylinder head volume - 68 up to 72 (I read somewhere these were what had been seen in the past)
Dome volume -10cc
Deck clearance - .029 (I assume the measurement I took at the flat is this number)
Compressed gasket - .049 to .059
number of cylinders - 8
I concur that the current Lunati cam isn't the best for the rest of the engine, sucky part is what happens for the cam change another 400ish up close to 1000 depending on how it goes.
hydraulic or solid?
verify pushrod length - I now have a set for a solid and a hydraulic, no certainty either set will work.
replace springs - I don't know what the ones are in the heads and have no way to verify
upgrade/change torque convertor
total cost to change - cam, lifters, springs (plus gaskets etc.) probably around 400ish (based roughly on the cam Rusty linked to @ Summit)
pushrods if needed - 40.00 to 150?
torque convertor - 400ish maybe?
so a couple of things I know for sure (because this is what I have LOL)
engine will get a set of Dougs 453s Headers
gears will be 3.55s in a 8 1/4
intake will be Edelbrock RPM Air Gap
Carb - Holley 670 elect choke vac secondary's. (I have a Quickfuel Slayer 600 cfm) I think the holley will be a good fit, it ran well on my 351 in my Mustang before I swapped to fuel injection
Obviously with the engine torn down to where it is it would be better to swap cams now rather then later, I'm gonna continue some of the other work while I ponder this some more, perhaps if I have some luck here soon with a sale of a few spare parts I have it will help with the pondering LOL
Thanks for all the reply's and attempt to further my knowledge,
