lol I couldn't believe it held that much vacuum..
but it does.. lol crazy FTF..
That's just how cams work. You know mine. its got some lope to it. But it being advanced 4 makes it hold more vacuum. If it was a 110 center. it would only hold aboud 10 or 11" and be a nut case and idle at 13 1400RPMs. Hell with that. thats not a street can engine in my book.
It makes a 110 center line cam with a lot of over lap act like a 114 cam. But still keep the over lap so the cam will let the engine swing to 6500RPms so it can make the power up stairs.
Advance cams are awesome. has the best of both worlds with just alittle trade off. My cam cost me about 500RPMs in red line But the amount of TQ and HP it adds to the low RPM range is well worth it to me.