I am not saying a magnum block is a race block but it is a simple fact it is much stronger than an LA 360-340-318-273 except possibly a 340TA block. I made a big thread showing some of the differences I am aware of and they are not insignificant.
As for detonation tolerance I am running 11.5 with stock ported by me iron magnum heads and a tiny 221@.050 cam 91 octane and ZERO sighns of detonation, try that with some dinosaur open chamber LA heads.
Been doing open chamber, pump gas, 11:1 LA engines since 1981. And still am.
What elevation? 91 octane? Little tiny cams? In a truck you tow cars with? Be honest now...
And to be fair the LA roller blocks have the same structural improvements the magnum block has, at least the 91 under my shelf but not the 88 flat tappet block down there.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
