Out of the box heads?
 

What is your guys take on these videos? https://www.youtube.com/watch?v=N3jn2ER455Y

part 2
https://www.youtube.com/watch?v=TsOmhHj-zqA

Oops!

Interesting, all the more reason to buy bare, Im sure there is a big misconception of assembled heads being ready to go, me included, the smaller the bore the less run out, larger bore more run out, maybe the seats are being cut to fast and the tooling has some deflection in it, who knows, thanks for posting,

Your average guy might save for a couple years to get a nice set of after market heads, then tell him he needs to spend another grand to make them right,

Interesting, I have several sets that I "just" bolted on. Wonder how they'd measure up? One set is in 242ls' 23 warlock and has run over 40 hours above 5000 rpm if I had to guess.

Mine were not even close to bolt on ready, wish I would not have been "sold" on them and bought bare like I wanted.

I'm considering buying 2 sets of after market heads and have been reading and watching videos like this. It's pretty pathetic that 3k $ set of heads from a reputable company sends that crap out the door. It's discouraging.

Also, in my opinion, buying a bare casting isn't a solution if it still needs the same machine work as a 1988 088 head with 750 hours on it.

The main difference is, no matter what you do to a 1988 088 head, they still don't flow chit lol.

I think its generally, simply good practice, to get bare heads, and have them gone thru by a qualified machine shop. Things like cleaning up a valve job, checking/honing guides, little touchups, really isn't alot of money in the grand scheme of things. Now, sticking a valve, breaking a head off a valve, can get real expensive in a hurry.

I don't think these issues are brand specific at all. I've talked to head guys who do this stuff for a living, and while some heads are better than others, none are "perfect" out of the box. They may be aftermarket, but they are still mass produced products.

Oh I hear you on out performing the 088s. I have been leaning toward 308 dart irons. .040 over 454s would like to stay with rectangle ports. Id like to be in the 550-575 horse range at 5600rpm ish. Whatever I go with it will probably be bare.

Where do I begin on this.... I guess it's winter now huh??

I learned heads are NOT custom made to the person selling them to you and to buy heads bare and have them built, we all know the issues I had and some can try to say it was my fault but facts are facts.... tight guides, metal transfer on valves, and wrong springs, again also not a brand specific thing, many brands have these issues....

took me some coin to make my bolt on heads marine ready........ wish I bought bare and built them...