It is apparent to me that the only thing skaterdave excels in is chit talking . You don't even know an engine from a motor . You would be wise to do less with your mouth and more with your ears .

Lmao...that's funny.

I mean, Im not tryin to get in a pi$$in match with anyone. But, I did get bent when someone starts bashin marine engine builders. And the only reason, is I've learned a lot from these guys over the years, and still I'm a novice by all means. Eddie Young, Haxby, bob madera, Laz Mesa, and many others who've shared their knowledge. They've been there, tried it, and done it. If I had a dollar for every jacka$$ who walked up to me at the dock, and started telling me how he makes 900HP on pump gas in his N/A SS Camaro or Chevelle, and asks why I only make 800HP with a blower, I'd be able to afford a skater.

yea you guys are right just add a blower.

Very Interesting discussion/education! teach us more, we could learn a lot from this!

only if you want to go fast :lolhit::lolhit:

Here is how a look at it (right, wrong or indifferent). The weakest link in the entire engine is the valvetrain. To get 800 hp out of an NA engine takes quite a bit of cubic inches, relatively high compression requiring 92-93 octane, pretty damn good heads (preferably CNC), healthy cam, higher rpm, etc. It can certainly be done though. There are a ton of guys, including myself, that do it on an almost daily basis. On the flip side, you can build that same 800 hp with a 509 ci engine using as cast heads, fairly mild cam, etc. You don't need as much cam, spring pressures, rpm, etc. to acheive the same goal. Not to mention, you have more left in it for the future if the customer wants more. It's just a matter of turning up the boost. However, you still need decent parts that will withstand 800 hp. You can have better longevity out of the smaller SC engine as long as you don't just totally cheap out on the parts. You don't need as good of a crank since the stroke is 1/2" shorter and you aren't turning it past 6000 rpm. That still doesn't mean you should leave the stock crank in it. Most of the time, what the customer has to work with dictates the build. If he has a good block, but it's a low deck and he has a good crank, but it's only a 4" stroke, but he wants north of 800 hp? What do you do? Do you tell him to scrape his parts and build a 598? NO. You build a 509-532 with his block and crank and put a blower on it.

Here is what I tell every single one of my customers.......be honest with yourself. If you say you only want 700 hp and that will make you happy, is that true, or is that all you can afford right now. I see it a lot in guys who are building their first custom engine. They may have had Merc engines their whole life. If they are stepping from a 500 efi into something with 700 hp, that is a pretty big step up. At first, it will be awesome and the boat will feel like a rocket ship. Eventually it will feel like it did with the 500. Then they will want more. I try to take that into consideration when chosing the combo and the parts. I want something that we can build on in the future, not something that is already maxed out. This stuff is entirely too expensive to have to buy everything twice.

I use right around 800 hp as the cutoff. At that power level, it costs about the same to build a healthy NA engine as it does to build a smaller SC engine. You don't need the billet rods and CNC heads in the SC engine like you do in the NA engine. The difference in long block parts will offset the cost of the blower. Another thing is that I doubt you will find many, if any. builders out there that will warranty an NA engine making north of 800 hp. I'm sure there are quite a few that will do it with a SC engine. I give a year on the SC engine. I certainly won't put cheap parts in it since I have to stand behind it. Where is the benefit in that.

This is my opinion. Nothing more, nothing less. Others may see if differently. That's what makes us all unique.
Thanks,
Eddie

I'm all ears Eddie , thank you .

well it seems like mild thunder is not so uneducated as he pretty much said what eddie just said,thanks for the post eddie,that info should help anyone who thinks builders push blowers on customers because they dont know how to make horsepower na.

I bet if we were all on the dock or rafted off this would go a lot smoother.

Seems to me Skaterdave is trying to say the same thing Eddie summed up, he just did not come across as smooth.

Actually every post on here has some truth to it, and all of the post are pretty close to each other. Its not like everyone is a mile apart from each other.

:party-smiley-004:

This is a great discussion on a popular topic. After building my fountain and producing big power i just thought i would add my 2 cents. Blower or no Blower There is something to be said making near 800 horsepower in a n/a BIG INCH motor. After all there is one saying that will always hold true "THERE IS NO REPLACEMENT FOR DISPLACEMENT!":eekdrop: