Stay away from pro comp heads for marine use.

if you do a little research on the differences between the 2 metals allu. vs iron/steel you will come to the conclusion that aluminum is a far superior material in just about all aspects
the biggest disadvantage to aluminum is that in a motor application if any overheating occurs even in small pockets this can adversely affect the metal itself
warping of heads is probably the most common problem
i wonder if some of the real serious hp enthusiasts are using billet aluminum blocks in marine application like the racing boys

How about for any use??? lol Chinese quality and a Chinese price.

Pro Comp is from Australia

You are correct......... I retract my statement. I had Professional Products on the brain.

Don't retract your statement! Procomp heads ARE made in China! They are routed through Austraila not MADE there! Do a quick google search on this and you'll find lots of info on them 90% of it bad! Do yourself a favor and stick with Dart, AFR, Merlin or Brodix.

Either way that's cheap insurance IMO.
Thanks

That's what I thought but wasn't 100% sure, so now you confirmed what my wife tells me is false................ I DO know everything and I'm never wrong!
I've seen several alum. SBC heads that look identical but have different name and the same poor quality. Patriot, Pro Comp, Professional Products etc.... People buy them because they are cheap and don't care to investigate why whether it's poor design, poor flow characteristics, poor chamber design etc.... We only use American made parts on our engines and it's all we sell. Says so right on the top of our homepage


hahaha

So what type of heads are on the 496,502,525,575 alum or iron/steel

Merc. 496 heads are iron unless you have installed a set of our all USA made BigPower 100 lbs. less per pair aluminum heads!

Could not resist patting myself on the back, HA!

Best Regards,
Ray @ Raylar