The Cossie M2s give a 110 deg LSA, like the HKS cams. However, the LCs for the Cossie cams show that if installed straight up, the Cossies are like HKS cams installed at +1.5 Int / +1.5 Exh. So, if one wanted to run the equivalent of HKS 280s at +2/0, he'd install the Cossie cams at +0.5 / -1.5. If he wanted to run the Cossies at the equivalent of HKS at -3/-1 (more top end), he'd set the Cossies at -4.5/-2.5.

The nice graph you pointed to at norcalevo.net shows what one gets with the HKS 272s, when set to +1/-1, which is a setting that I always recommend for the HKS 272s for best all-around street performance. In that graph, the longer valve timing of the HKS 272s is what gives the broader hp/tq bands vs. the factory cams. Where cam timing is concerned, the tighter LSA of the +1/-1 setting he used for the HKS 272s vs. the factory cams at 0/0 (106 deg vs. 110) is why the larger HKS cams spooled ~250rpm quicker than the factory cams.

More hp, more tq, larger power bands and faster spool. It's definitely like having your cake and eating it too.

 

Ted,

Would the effect be close for HKS 264intake/272exhaust set at +1/-1 despite the difference in the effective duration of 8deg between 264's and 272's?

 

Yes, but advancing the shorter duration 264 intake cam is going to give up more on the top end.

 

yes YES, so how can you get that same type of setup with the cossies?

cuz i guess i asked the wrong question... i was wrong to assume that the cossies were more like the 280s when i'm not really sure WHICH cam they're more similar to.

 

If it were up to me, I would probably (at least initially) set the Cossies to the equivalent of the HKS 272s at +1/-1. For the Cossies, this would be a setting of -0.5/-2.5.

 

Im confussed, I currently have BC 280; Fp Red; 1000 cc injectors; power fc ecu; big intercooler; are the m2 for me???

 

Do research on cas you do realize how old this thread is right?

 

hi i have a set of 272 cosworth cams in my 7 and without dialling them in they made 310 hp at the wheels.
i get them dialed in this week and was told by my employer my 7 will be at 350 hp, i rate them alot a cood lumpy cam and heaps of power through all gear changes.