I will be using the Inline pro built 9:1 short block and I have a AP2 head going on it. Now I have both sets of cams for this head AP1 and AP2 cams and was wondering if anyone can share insight on which ones I should use.


So far I have Inline Pro telling me to use AP1 cams, and Soul Coughing I found to say AP2 cams as his AP1 cams made him boost 500rpm later. Then a bunch of threads stating to use AP1 intake and AP2 exhaust, but none of those guys were boosted.

 

I run AP1 cams in my F22 FWIW.

 

AP1 cams!!!

 

You might want to tell us which crank you are using? f20, f22?

 

I'm sorry F20c

 

A little of both

 

your better off spending your time debating what color to paint your valve cover.

 

Whats the difference in cam specs?

That would be your answer right there.

 

I don't actually know any of the specs on the different cams but there are more than one AP1 cam and I would assume more than one AP2 cam. I noticed this while turning two blown up motors into one running one. The cams from the later AP1 were marked differently and made more power up top with some minor losses in the mid range.

 

According to Crower;


USDM F20C (S2000 '00-'03) Stock 300°/298° 226°/222° .498"/.459" 12.65/11.66
USDM F22C (S2000 '04-up) Stock 296°/296° 224°/222° .487"/.475" 12.37/12.06

Rocker Ratio: 1.72:1 mid, 1.7:1 sec, 1.7:1 pri


Taken from http://www.nolimitmotorsport.com/bri.../f20cf22c.html

So it looks like I will be using the AP1 intake cam and the AP2 exhaust cam, I can see where that is optimal if more lift is better? I'm not sure what is really needed for a turbo motor, and I let someone borrow my forced induction book that talked about it.