Originally Posted by ebristol

There is a lot of arguing in this thread about revving this engine to 7800 but has anyone determined it is beneficial to rev out that far with S2 cams and a ported head with the M62? Al's Cam'd/ported head made peak HP before 7,000 rpms.

Saab head. I know.

Originally Posted by armcclure

In light of recent events, I'm making an early head swap to my rather large head done by josh then heading back to the dyno. Stock cams though; my s2's are now in Taylor's car.

Originally Posted by ebristol

Do it! Do it!

Originally Posted by Powell Race Parts

say what?
and here I take flak on here about how I am wrong for not embracing them? Me who installed them with the right head, the right header the right tune, TVS, got 323 whp on pump gas, made customer deliriously happy and said "I am so happy customer likes them but for me they are a non starter,
built in traction control no torque? Maybe good for 1320""

wow. this is a turn of events.


lol

actually their cost is modest for what they are, and they dialed in 100% ZZP did their homework.

Originally Posted by armcclure

Don't take what I sand the wrong way. I did like them. But for what they cost compared to getting a much better cam for much less $$$ directly from comp, I think they're not worth that.

Originally Posted by Vander Nars

How is comp cams better when zzp cams are comp cams?

Originally Posted by Hot Rod LSJ article

The new cam set liked 27 degrees of total timing and still generated 11 to 12 inches of idle vacuum (use a vacuum pump if operating power brakes). The peak power point jumped by 700 rpm to 6,600 rpm, where the new cams generated 265.2 hp, a gain of nearly 36 over the stockers. Likewise, torque was up about 11 numbers to 227.1 lb-ft at 3,900 rpm, a 100-rpm increase over the previous peak point. Although the engine was stronger in the midrange and top end, the gains were made at the expense of less power below 3,500 rpm.



Read more: http://www.hotrod.com/techarticles/engine/hrdp_0907_gm_ecotec_bolt_ons/viewall.html#ixzz2Q9XmEUgA

Originally Posted by armcclure

There's a guy at comp named Matt, very smart guy who will tailor a cam set to your specific application. A set of custom grind from them totals around 500. You just have to go through the hassle of getting blanks from ced and sending to them.

The zzp cams are great for what they are. You're paying for a mild cam that just drops right in, no hassle no worries.
I never felt the massive tq loss that jp describes, but my car never spends much time down low. I imagine on a TVS vs a 2.5 m62 it's much more noticeable.

Originally Posted by armcclure

Here. Add on note- stock cams made peak power at 5900 for them.



IMO, there is no way the zzp s2 cams come close to a 36hp gain over stock. And this isn't even a custom grind, just their off the shelf ecotec blower grind.