Is it bad if I rev my car about 6,000 rpms just before the redline ?
I have a friend who has a modified car that can rev above the red line. Over 8k rpms he can do, He hasn't blown it yet on a stock bottom end. The redline normally prevents valve train damage. The bottom end on some engines can handle a much higher RPM. But the valve trains need upgraded if you want to be able to rev an engine very high and very fast.
Damage can occor past the redline the more harder you push the engine the more parts start to wear out
No, but If you go past the red line, it begins to hurt the engine.