Question about the price of 340s

The 340 will always outrun a 360 all things being equal. Especially on pcar heads. Regardless of what all the gurus say, Rod to stroke ratio is a BIG deal, specifically on induction limited engines. The 340 is horribly induction limited and the 360 is even worse.

As already said, emissions and insurance killed the 340. The big main bearings on the 360 are a drawback. They did it because they new they were going to cheap out and use cast cranks, so they went to a bigger main journal to increase Rod journal overlap.

While you are spinning your tires, I will be hooked and gone.

I've seen so many underachieving strokers out there it's crazy.

Do the 340. You'll be happier. Unless you are one of those guys who is more impressed with smoking the tires than going fast.