How did you guys figure out the Dcr without the advertised cam duration numbers?
In any case
I ran 11.3/8.6/175psi with a 292/108 in my 367 and it burned 87E10 quite happily.
I have also run 10.9/8.9@184psi with a 270/110,also on 87E
I currently run 10.9/8.7@180,with a 276/110 and still on 87E
The quench was maintained at .039 to .033
Engine currently has over 100,000 on it.
As to your 418, you could be knocking on 11.8/9.5@200psi. There is/was a guy on here a year or two ago who reported that he was running over 200 on pump gas. Actually I seem to remember more than one guy. So while it may be possible to run that high, it's probably not recommended. A much safer number is 180 and with tight quench.You could probably make 200 work with a really,really small carb.
I used an ICA of 64*,and a swept of 856cc,and 79cc as total chamber volume.
Why 64* ? Cuz that's what my 276/286/110&230/237 cam came in at when 4* advanced. To get 57* you'd need a pretty fast roller cam, ...make that incredibly fast.
That calculator is only asking for plus 15* to add to the
[email protected] which is not enough for a FTH. It should be closer to 22/24
