|skolnick

Let's get the honest truth here what can I expect from a 7A exhaust cam?

20VT90q

And you're still farting around with an RS2 turbo and no software so what's the point?

|skolnick

The RS2 benefited from the cam or one that was close to identical...

20VT90q

Do some research. The 7A cam is not close to identical. You loose more bottom end with the 7A than the RS2.

|skolnick

Any specs?

c4S6

If I run more boost and higher compression, it makes sense to also hold the exhaust valves open a little longer.

No??

I thought maybe even if you just had a chip and an RS EM, the 7A cam might be helpful. Maybe I'm wrong. I just know a lot of people run that as a lower cost alternative when they go to RS2.

20VT90q

AAN/ABY/3B:

intake: 8.3mm
exhaust: 8.6mm

ADU(RS2):

intake: 8.3mm
exhaust: 9.5mm

7A:

intake: 9.6mm
exhaust: 10.5mm

As you can see, the 7A is no more identical to an RS2 cam as an RS2 is to an AAN.

UR-Idiot Savant-S6

by going to a 7A cam you're going to lose some tq and really experience no benefit unless you're building a monster motor. The AAN cams do just fine up until about 6500 rpms.......then they fall on their face. Up high is where the 7A cams come to life so if you're going w/ a big old snail that pushes lots of boost up high they'd be a good idea but for most of us it's probably just overkill.

c4S6

Thanks for the explanation.