I believe the question I was answering was,
“What part of the magnum was superior stock???”
“The efi system is not that great.”
Somewhat true but, you get a block that has good cylinders
“The camshaft is weak weeny”
True, but did most LA come stock with much better, and provisions in the M block make roller lifters easier come cam swap time, you know you’re gonna swap cams anyway.
“The cylinder heads don't flow worth a crap and can't be ported to support real HP 550 or greater.”
Which are we talking about stock or not, I forget, but the statement did say stock.
“Chamber design okay, chamber actually junk they all crack between the seats.”
True,
“They are untunable without someone else building a tune for you.”
True, because of the EFI I suppose, but you did say stock, so I would say that there are more EFI engines running pretty good with 100K+. Back in the day someone was some kind of god if they had a car with over 100K, and they certainly didn’t have cylinders with hone marks if they did.
If you wanted to do a real cam swap there is 1 or 2 very expensive options for adjustable rockers
