MATS 2011 Killer Bee's Pics and Vids

eQUOTE=70aarcuda;1340457]The track itself is right at 2000 above sea level....my weather station was showing a correct elevation of about 3000-3100 feet most of saturday and sunday....

that is pretty good air for vegas...[/QUOTE]

The contention that the track is at 2,100 feet is NHRA's information from their (NHRA's) website, not mine. But that's moot, if the adjusted altitude was showing to be 3,000 feet on your weather station.

The rule of thumb is that for every 1,000-feet above sea level, a normally-aspirated engine will lose 3-percent of its horsepower (ball park figure) so, at 3,000 feet elevation, that's 9-percent of your horsepower gone, compared with running at a sea-level track.

If you add that 9-percent horsepower loss to the fact that the moparkid805 swapped in a much heavier 8.75" rear end (+100 pounds over a 7.25"... I dunno???) and that the 8.75 has a lot more rotational inertia (harder to turn), it's no wonder his MPH went down.

Just sayin'...

Weight extracts a MPH penalty wherever and whenever it is added, of course. That bigger, stronger rear end is probably unbreakabe in that car, but it comes at a price... :sad10: