Just trying to get everyone's opinion on which cams are better for a gt35r evo with a build bottom end.. I have the GSC 272 272 cams right now but I dont feel like they are making as much power as they should. Let me know what you guys think are the best set up for me. If you think another cam would be better just let me know

 

No doubt about it- the Revolvers.

 

I just may run a back-to-back test very soon. If so, I'll be using cam gears such as to equalize the lobe centerlines and isolate any differences purely to lift differences and ramp shape. That's the way it needs to be done to make a solid test. . . and NO one has done that.

 

Don't the revolver cams take a lot to tune? Thought I remember reading that DB spent a lot of time tryinh to smooth out the idle and get them running properly. I could also be on crack and have no idea what I'm talking about

 

and he also picked up ~20whp/tq over the 280s on stock gears.

 

"On stock gears" is the key phrase. Comparable power gains have also been demonstrated with 280s from making a cam gear change (tightening the LSA). This is why a proper test should negate cam timing differences between the two sets.

As compared on 'stock gears', the Revolvers have a little more lift, different ramp shape, and 2 degrees tighter LSA, which makes for a rougher, choppier idle, and in this case an improvement in hp and tq. Take a set of HKS 280s and tighten the LSA comparably, and the effect is the same.

 

With a STOCK head and STOCK ecu (piggy back) ?

If so that would be great .

 

Definitely stock ECU, possibly stock head. Either way, I'll have to make a decision very quickly. Naturally, I'd welcome a bit of vendor/manufacturer support to help defray my costs, but I'm not going to hold my breath.

 

TedB, since you seem to be leaning to the thought that the observed increase in hp/tq from the HKS 280s and the Revolvers is attributable to cam timing, and you are using adjustable gears, I'm a little surprised that you are messing around with the expense of the swap.

How is your idle quality with the tightened LSA 280s? Is there anything you can do with the XEDE with respect to timing at idle RPMs to improve idle stability?

 

I have seen some truely impressive #'s from cars with revolvers.

 

I'm of the firm opinion that at least some (if not most) of the difference is attributable to cam timing. I'm rather curious however to gauge the balance of the difference, all else set to be equal. It's an expense and PITA to do, so I haven't committed to doing it just yet.

The 280s with the tight LSA are choppy, but fine. I've not had to even look at idle settings.

 

Also consider the Jun or Tomei's they have the highest lift and will give you more top end.

 

So it seems like the revolver cams would work best with my car on the Gt35r and Aem right

 

Everyone keeps using that Buschur example of how he made more power and torque, and Im not doubting the Revolvers potential to make more power because I think they should, but if you read carefully the car was also running 2 more PSI so what they will do at the same boost we still dont know. We can only speculate until a controlled test is done.

 

GT30R w/AEM and Revolver cams,valve springs and retainers here. Loving every moment of it.