With all this in mind, those of you who road tune using a standalone do these cams like conservative timng up top, We got only 91 here in CA so i figure a max of 17-19 degrees at the most.

 

BUmp

 

like umiami80 said it is the power that I am after and don't care about it idleing a little rougher. I got the hks 272's with aem gears

 

I am bumping this thread because I would like to discuss the +1/-1 settings that seem to be popular these days. Anyone done a comparison between the -4/-1 and the +1/-1?

I run -3/-3 for daily driving because I like the hard hitting low end. That combo moved max torque about 1k RPM lower than all other settings that I tried. I was unable to try +1/-1.

 

The +1/-1 setting will deliver quicker and bigger low end and midrange than -3/-3, and probably won't sacrifice much of anything up top. My 280s at +2/0 spool quicker than my 272s did at -3/-3.

 

haha are you gonna add this to yer sig too jeff?

 

Done!!!!

I may try those settings tonight.

 

Let us know what you sense in the way of a difference.

 

What about +1/-2. I don't care about my idle I knew about the roughness before I got the cams I just want big power wouldn't that set up give tli crazy bottom end and good mid range. Shouldn't kill topend too much right? I mean topend diference should be that noticable since my settings are 0/0 now right? Anyone?

 

+1/-2 is going to be too tight a LSA IMO, and I'd expect the powerband to be short and peaky.

 

What is LSA

 

Lobe Separation Angle.

 

On my pump gas tune +2, 0 worked the best out of all the other cam gear timing.

 

How does +1/-1 idle with 272's? I am at -4/-1.5 now with a very smooth idle. I tried -3/-3, but the car rumbles too much and it becomes a cop magnet.

 

seperation is what causes smooth idle. apparently with 5 degrees of seperation your idle gets silkie smooth. so +1 and -1 will only be 2 degrees so your thump will still mostly be there.