Hey guys,

I've got a LT4 Hotcam right now and a eaton roots style blower. I would like to swap to something that gets better gasmileage and can use the boost better.

I just aquired a ZZ3 camshaft that came out of a 93 Z28 that ran 12.40 on motor and the stock chip. I later tuned the car myself and was surprized to see that this cam pulls 18 inches of vaccum easy.

The car this came out of later got a Hotcam and the car actually slowed down.

the specs of a ZZ3 are 208/221 510 544 112lSA (with 1.6 rocker)
my LT4 Hotcam is 218/228 525 525 112LSA (with 1.6)

I'm thinking the ZZ3 should do better with a blower. I would like a little more LSA but with as much vaccum as this thing pulls I'd expect it not to have as much overlap.

What do you guys think?

 

just FYI my LT4 hotcam barely pulls 14 inches

 

I haven't had any problems running it with my setup. However, I do think there are better cams out there and making a simple call to Comp Cams or Lunati will help you find them.