Missed on this combo?
Well if I can't find a glaring problem I am going to retard it back to 108 and head back to the dyno. Dont know if 2 degrees will do much. What are your thoughts on this, YR?
Looking at your dyno numbers, the intake valve isn't open long enough. You can help this by closing it later. Also, I think the 108 LSA may be hurting you a bit from 3000 to probably peak. When I think of your combo, I'd like to see more duration on the intake. I don't think there is any advantage to a dual pattern cam in your situation. Like I've said before, are they adding exhaust timing or reducing intake timing? Looks like they had reduced intake timing. You are trying to fill more cylinder volume through port architecture developed in the late 1950's for a low 300 CID engine with a max RPM of maybe, MAYBE 5500 RPM. The only option is to open the valve longer.
The LSA is also not helping at overlap. I'd think for what you have you need an ICL of 108-110. It needs to be that late to help fill the cylinder.
My best guess is 269/269 at .050 and I'd leave the lift alone so you don't have to screw with the geometry. Then I'd say a 104 LSA, in at 102 if you have a timing chain, 103 with a belt and 104 with a quality 3 gear drive.
I *THINK* there is 40-45 HP left in correcting the cam. 25-30 HP in it if you are just going to move the ICL to 108-110.
This is why I was never big on posting a customer dyno sheet unless they asked me to. The cheap screws, like parasites never pay to flow their heads, or dyno their engines. They just suck off what people post. You've already spent a pretty big sum to get where you are, and now you are going to be spending more looking for more HP. It's a viscous circle. And it lives and breathes 100 dollar bills like penny candy.
Like I say, I *THINK* there is more to be had. Just depends on what you want to spend. And don't forget the time element.
