Originally Posted by Serioussn95
Nice work man. strong numbers from the 5.3. hard to believe that with the decking and the 243s your compression is still only 10:1!
Heres a screenshot of the calculator i used
I cc'd the heads right around 61cc though im not a professional machinist. I could have read my reading wrong. But it repeated. Though my dynamic calculation is dead on with my cranking compression..
They say its .005" for every 1 cc. I believe the 243's are 65cc stock, so that would come out to right at 60cc.
Unless im mistaken?
Heres summits calculator with both 61 and 60 and i even threw in a 59cc for good measure. It looks like im somewhere between 10.54-10.82:1. But im trusting my CC measurement.
Either way doesnt matter to me. I ran it on 91/100 on the dyno and no signs of detonation. And ran it on pure 110 ont he bottle.
And my dynamic compression. Which when on the dyno we did a compression test. And it came out to right at 175 on all 8 holes. I think its close enough
am i crazy?