273 piston options

Rat Bastid said

The first question is how high do you want to turn the engine? And actual RPM or close approximation would help.

The second question is why? Cost is a big factor in RPM. The cost of everything goes up by an order of magnitude once you go past 7k. 7k to 8k or so is an order of magnitude. 8k to 85k is another. And it gets worse from there.

It’s not just pistons to worry about. Is block rigidity. Crank rigidity. Rod strength. Valve train. Oiling issues. And on and on. RPM is cool. RPM makes power. RPM costs big $$$$$$$$$$. And requires incredible maintenance.

That’s why I asked.

Click to expand...

I’d like to say 7k but as high as the stock stuff that’s going in it will allow - for now.
If I buys pistons that fit the stock rods then that’s what’s going in it now.
I’ll be using the stock rockers and flat tappet lifters for now.
I’ve got a set of solid roller lifters but I’m thinking solid flat tappet for starters. I dount think that will be the limiting factor just yet.
I’ll be doing oiling mods and Adding a stiffer spring to the Melling 72HV pump I found in the engine when I took it apart.
This is going to be a fun project for me, not a race engine. If the parts I choose limit me to 6k then that’s what the limit will be. Until I decide to buy a better crank and rods. Or springs and rockers if that’s what’s limiting me.
Short version: I’m aiming for 7k.