Lego 3.5L V6

[dodgechargerfan]

Yes. The pistons are square...

http://s13.photobucket.com/albums/a280/magnum37500/?action=view&current=MOV06066.flv

 

[a12bee]

lol I think he's got a couple of dead holes.

 

[69.5CUDA]

looks more like the "dead" holes have "other" dark colored pistons

 

[dodgechargerfan]

Yep. Some pistons are black.

You can see some pics here:
http://s13.photobucket.com/albums/a280/magnum37500/?action=view&current=IMG_1367.jpg