Cylinder Heads
They don't have to be aluminum, I was thinking about using a closed chamber heads so I can run the pistons at zero deck height or a little under.
I bay closed chambered iron head are you thinking of?
What engine size again?
Aluminum is more tolerant of high compression than iron is. While everything about running a higher compression, material be darned, is timing and fuel/fuel management.
I’ve had better results running an 11-1 aluminum headed engine over a 10-1 iron head engine. The difference was chamber size & design.
An open chamber J head w/zero deck KB-107’s and a .038 head gasket is 9.8-1. Closing the chamber up to 63cc is a tad more than a point of compression. 9.8-1 to 10.84-1.
Is quench important for a daily driver?
No
Also what would be a good intake runner size? I was thinking a 170cc intake runner size.
A stock head can power a car into the mid 13’s easy. Skip head cc and think about the heads flow numbers.
The engine won't be ran over 5500 rpm's.
A stock head can handle that. My compression example above with the iron head and a 1.88 intake valve powered my 360 to 6700 rpm. While head runner cc has a roll as well as what it flows with what ever valve being used, it’s more so the over all combo and the way the engine is designed.
IMO, most everyone here runs to an aluminum head and dumps the iron for various and rarely a worthy good reason since the iron head can do what most think it can’t, often!