Press Fit vs. Full Floating Wrist Pins

LA rods came in 2 designs. The original 273 casting and the heavier duty beefy 340/360 '4bbl' casting. Magnum rods work but are dimensionally thinner on the little end (its so slight you wonder why they did it) but its a factor when you try and put stock magnum pistons on an LA rod, they dont fit! Or they are so close that they dont allow the piston to center in the bore. All factory floaters were bushed. Ive never seen a floater without a bushing for said reasons. Pressing a pin out of a 360 is tough, I used a 20 ton and it spiked to 11 tons before the pin gave way, and no one will guarantee the piston will survive this. My machine shop also had a "hell of a time" pressing a magnum pinned piston onto a 360 rod. Not sure why but he said that combo was 'F'n tighter than the norm...'. Specs say all the Mopar 318 pins are the same OD, .9842.. LA or magnum.

<<< Some aftermarket pistons do not come with lock grooves, make sure you check before you go floater!!>>>