I was wondering what the pro's of pressed piston pins is? I know floating pins have a pro of reduced friction. What would be better for a street engine, say a EFI 350 to 400 HP wise. Thanks!

 

I don't think one is really better than the other, both work just fine, but every engine I have ever built I got full floating simply because it's easy to but them together and I don't have to pay extra to have a machine shop assemble them.

 

Just make sure that your rods are reamed or bushed/reamed to accept the floating pins.

 

and make sure you understand how to use/install the locks if you use floating pins, it's pretty common to read about someone messing them up.