268 Voodoo cam rpm and vacuum
I'm getting around 14" with a Comp xe268 in a 318, sounds like something is up with yours. I believe the Voodoos are slightly more tame (and probably a better cam, I run a smaller one in my 350 truck and it's great).
Anyway, wiped intake cam on that cylinder maybe?
A 60403 Lunati is a step up from a Comp xe268. The xe268 has slightly more
advertised exhaust duration, but the Lunati has higher lifts and faster ramps, so the duration at 050" is actually more on the 60403 than it is on the XE268. The lunati will have more area under the curve, and I would expect it to have slightly less vacuum. It wouldn't be much, I would still expect it to be around 13" at idle.
Comp XE268
Basic Operating RPM Range: 1,600-5,800
Duration at 050 inch Lift: 224 int./230 exh.
Advertised Duration: 268 int./280 exh.
Valve Lift with Factory Rocker Arm Ratio: 0.477 int./0.480 exh.
Lobe Separation (degrees): 110
Grind Number: CRS XE268H-10
Lunati 60403 (now #10200703)
Basic Operating RPM Range: 1,800-6,200
Duration at 050 inch Lift: 226 int./234 exh.
Advertised Duration: 268 int./276 exh.
Valve Lift with Factory Rocker Arm Ratio: 0.494 int./0.513 exh.
Lobe Separation (degrees): 110
