4 on the floor;
I've noticed that! eek Any lines on low priced pistons for a 270? Mine aren't beat up too bad except they rattle like a diesel every time I back off the throttle under compression. Doesn't act too life threatening,but also doesn't inspire confidence to do road trips etc.
Speed

1954 GMC 350
1957 GMC 1/2 ton
1962 Chevy C-30
1952 Chevy 6400 dump bed project truck
'98 Harley FLSTC
'66 Pontiac Catalina
'76 Chevy 1 ton Duallie
'84 Bronco II
'78 Dodge W-200
'81 Toyota 4X4 truck