If you are talking the 284/296/110, #20-225-4 cam,in at 106 for an ICA of 68*, then at 10.15Scr and an estimated 500ft for your location, I can't get the Wallace calculator to spit out more than 158psi. This with at 4.06x3.58, and total chamber volume of 83cc.
My 367 is at 4.05x3.58 and 930ft elevation, with a total chamber of 75.8, so my Dcr is 10.9. With my HE3037cam,276/286/110 in at 104, the ICA comes to the same 68*. And Mr. Wallace spits out 170psi @930ft, which my gauge reads as 177psi; about 4% high.
What I'm saying is our ICAs are probably identical,and our engines are within few cubes of eachother. That means with nearly .8 Scr difference, Your engine cannot be making more psi than mine, unless you are below sealevel,or I am at high-elevation, or mine has tremendous leakage. And since my measured pressure matches the Wallace prediction to 4%, I doubt I have much leakage.
If the Wallace is anywhere near accurate, then you just need more cylinder pressure. I have run close to 200psi with a different combo, on my gauge, which deducting 4% would or could be, a tic over 190psi..... still on 87E10 and 32/34* timing.
How you get the additional psi, well, that's up to you.
But if you really do have 180psi, then you are in pretty good shape with that cam.
___________________________________
Like I said, my combo went 93 in the 1/8th @3467 pounds; me in it.Which the Wallace mutates into 115mph in the quarter, which has the potential to go 11.9.
You're really close. You have more cam, and more indicated pressure and more gear; and our weight difference is just what you weigh.
If you wanna do some test and tune without a track, get yourself a G-techProSS performance meter, input some data,stick it on the windshield, and go find an abandoned straight stretch of road. Have fun.
PS, I have a brand new one,still in the box.
