Originally Posted by anotherguy
I've built engines as big as 145 CI on the Twin Cam platform. Generally 113"-136" is the affordable range. And affordable depends on your wallet's contents.
I've collaborated on a few really large FrankenEngines using billet components fabbed in a machine shop combined with automotive stuff. 160" CI is the limit there by way off the shelf parts like cranks. Finding cam/valve trains to feed those big bastards is the real limit.
BTW if you're going to charge untended use a dedicated smart charger that uses a microprocessor to determine how and when to float it.
That's huge! I knew they could be bored and stroked, but not that much!
I have a Schumacher SE-1-12S 1.5 Amp Slow Charge/Maintainer. It automatically senses when the charge reaches 14v, cuts off, then comes back on if the charge drops 1 volt.