212/226 cam 1.5/1.6 split rockers

[gmcdragster83]

212/226 ZZ9 cam with 1.5/1.6 rockers is a setup that my motor was built with. What can you tell me about this setup. I have every bolt on you could imagine an a 95 formula with an early model 411 posi rear end getting dyno tuned as we speak but i am not to smart on cams.

[Scott Anderson]

What's the rest of the cam specs!? why the split rockers?! That cam can't have that much lift for it to be necessary.

[gmcdragster83]

ZZ-9 HydraulicRoller:
Intake Exhaust This is an emission legal cam which makes
Advertised Duration 282/ 287 over 400HP with our CNC"D LT heads and
Duration at .050 212 /226 F-car headers. Great with an auto or six
Gross Lift .483/.520 speed.
Lobe Separation 112
Im not sure about the split rockers I bought it with this setup

[gmcdragster83]

TPIS700-142 212/226 .483 .520. 515 .555 112 ZZ9 for 95-97

[Chris 96 WS6]

Frankly I think you need more cam. That much duration split (14 degrees?) is way more than needed, and I think because if it you're giving up a lot of HP by limiting intake flow so much.

I'd go to 1.6 rockers all the way around. Not sure why split ratios ever got popular, but more lift is almost always better IMO.

On the plus side, I bet it idles like stock.


Maybe Bret can pop in here and give us his thoughts.

[gmcdragster83]

I know that I have outrun some pretty impressive vehicles and it sounds like a beast. Ill have a dyno sheet Tuesday and I am going to talk to the technicion and see what he has to say about it all.

[SStrokerAce]

What rockers are on which valves? 1.5's on the intakes?

[red_z28]

Why such a small cam?