Anybody knows how to obtain the best acceleration runs using drop-clutch launches with the

engine revving at what rpm?

Thanks

 

Um, what does your subject, "Premium Unleaded" have to do with clutch drops?

While you ponder that I'm going to move this to R&C where you'll probably get some better answers from the experts there.

 

First, inflate your rear tires to 38-40 psi cold. This will help reduce rear traction off the line, which hopefully will let your tires slip before the clutch does. Then, just experiment with different launch revs in 500 rpm increments -- depending on the surface, you may need anywhere from 5000-8000 rpm to hook up well.