Sylvester Stallone came in a hair’s breadth of tanking “Rocky II” considering the fact that of a gruesome harm, and you will not think how he run by to shoot the flick!

Sly and Arnold Schwarzenegger sat down with Harvey, and for the initially time at any time jointly they talked about their unbelievable rivalry and how it blossomed into a shut friendship.

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Arnold’s coach and compadre, bodybuilding legend Franco Columbu, knowledgeable Sly for “Rocky II,” and when Franco challenged Sly to a bench push competitors, the actor was match … correct up till he ripped his pec off the bone.

Right here is the challenge. The harm occurred a month-and-a-half ahead of Sly was established to star in and direct the ‘Rocky’ sequel — so, you gotta see him demonstrate how he pulled it outta the fire!

As ‘Rocky’ admirers know, Balboa’s ordinarily a southpaw (lefthanded), but in “Rocky II” he learns to struggle righthanded. That wasn’t just a random plot twist — turns out it was the only way Sly could film with his private injury.

As Sly set it to us … pushing through the discomfort is just what pushed people today like himself and Arnold did to make it to the top.

“TMZ Supplies Arnold & Sly: Rival, Pals, Icons” airs Tuesday at eight/7 Central on FOX.