I've worked out a cam for my combo, but I'm wondering if someone can tell me what the IVC specs would be, I can't seem to work this out..

230/234 - 609"/612" @ 113+1

 

Try this calculator. It'll get you what you need.

http://www.tildentechnologies.com/Cams/

 

I'm not sure if i'm right, but i'm coming up with 57. I used to know this, but it's been a while lol

 

IVC will be 47* ABDC.

Russ Kemp

 

Yeap 47......a bit late for stock cubes IMO. Increase overlap add advance.

 

I'm looking at a few examples where the whole theory on overlap and advance, such as you're suggesting and it doesn't seem to add up as being so critical. Quite different overlap/advance, similar heads and still making strong power to a peak of around 6300...

 

Power peaks at 6300 rpm because of the intake manifold to make a long story short. That is why so many combinations seem similar with differing cams. What the real difference that you won't see on any dyno sheet is low end torque and driveability from a properly designed cam for the 6300 peak.

 

That probably is the biggest factor I guess, I think I have worked out a compromise that sits somewhere in the middle, also considering that correction factors on dyno figures usually adds a bit of artificial hp numbers etc