Quote:
Originally Posted by Tcoat
Race teams are not running stock lower grade engine components. They also ALWAYS have a second built engine ready for when they blow one up.
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That depends heavily on which series and how well funded the team is. There are many series where all the competitors run stock engines or stock short blocks and a number of the smaller teams aren't going to be holding onto a spare engine.
EDIT: forgot to say that while the above is true; they also don't expect the engines to last the 200k+ kms that people do for a street engine.