Underdrive Pulley Questions

[Homeboy981]

Great information guys! I will put the UD pulley on my "to-do" list!

I too was worried about "street-ability" of the mod. That is the only reason I have not pursued it.

Glad the question was posed to our resident experts. I wanted to ask, @thstone thanks for posing the ???. Happy to glean information where I can about our street-legal racecars!

Is the HP increase throughout the RPM range?

So that 5HP increase will drop our F-150 passing time by about a 1/10 of a sec or so. Yippie!