Originally Posted by BrianBrave
I smell an internet rumor!!
At the Texas Mile I was able to run the mile from a dead stop @ WOT to 160 + MPH (about 5,500 engine RPM) - - six to eight times per day
On Sat and Sun when the air temps were in the 70's - low 80's - my IAT's never got above 145* F.
A little math magic:
With the 185mm pulley, the SC spins at 13,750 RPM (5,500 engine RPM * 2.5 ratio) - this was my observed engine RPM at the mile mark.
The 178mm pulley will spin the SC at 13,750 RPM when your engine RPM is at 5,716 (5,700 * 2.4054)
If the 185 makes to much heat at 5,500 engine RPM, so does the 178mm pulley at 5,716 RPM. Assuming all our Supercharges all make the same heat at the same RPM with the same outside temp under the same load, at the same DA, etc...right?
The 185 is a 20% overdrive pulley
The 178 is a 16% overdrive pulley
This would mean that our engines are so fickle that an 4% increase in boost across the powerband is all it takes to "loose" power.
You forgot to mention that the FASTEST proven(in the standing mile) SRT-6 in the WORLD is running a 185 pulley!!! It's nice that us 185ers finally have something to call our own since we can't claim the fastest or quickest 1/4 mile times.
