I have had a piece of aluminum sitting in a cup of e85 for a year now testing this theory. Absolutely no effect on the aluminum thus far.......?

He may be thinking of Methanol rather than Ethanol for corrosion. You will use about 32% more fuel when running E85 vs Gas, but at $3.50 a gallon it seems to be worth it.

Good to know. Like I said no experience with e85. Does it become corrosive after combustion?

Just throwing an idea out there. What if you were to strip down your current shortblock. Install some blower pistons. Grab that B&M 420 in the classifieds with the whipple intercooler for 2500 bucks, run your 741 cam and valako prepped pro 1 heads. On 92 octane, 8psi, you should have no issues making 900HP. Total cost, under 5 grand. That blower is a smoking deal. The intercooler is prob worth what he wants for the whole setup.

http://www.offshoreonly.com/classifi...o54277-en.html

2500. is a smokin deal,900 hp that will go 3 to 4 hundred hours before needing a refresh.imo this is much smarter than a n/a engine making 900 hp from a cost and maintenance standpoint.

Air packer on her (god rest his soul) had that exact combo. 900hp at 6000

that is an insane deal. I would make sure the blower is tight and send it to the blower shop for seals, bearings and strips for about another ~$500 investment and peace of mind.

Yup. If I has a single engine boat, i'd have bought it already just for the intercooler. Problem is if I buy that one, I'd have to get real lucky and find another used whipple intercooler, or bite the bullet and buy a new one, and they are pricey. :(

I was going to start a thread myself on this topic. I'm looking to upgrade to a bigger boat and I want a minimum of 800hp ea and would like to stay away from a blower. I was considering a 572 with some custom heads, 10:1 compression, tunnel ram, solid cam, and lightning headers. I didn't consider dry sump although I have thought about using extractors to reduce crankcase pressure or even a vacuum pump. I currently have a 524 running just shy of 700 with a hydraulic roller cam at .623/.612 lift and 242/252 duration at .050". It took every bit of tweaking to get that, I know the stretch to 800 and still have drive ability is going to be tough, but I really like the rumpity rump of a big cam. I checked out AFR's heads, I currently have the 315's, while AFR makes a bigger port, they don't flow more than the 315 until they hit .700 lift and they all flow worse below .500. Anybody have any recommendations on heads that flow really well from .200 to .700?

Haxby, some of the new throttle bodies say they will support 900hp but require 9" of vacuum to function properly. I have been thinking about using throttle bodies on a tunnel ram to make more power through more complete atomization. What are your thoughts?

Blower with small boost is better on the drive train. Easier to make Horsepower. Mild Boost engines last along time. Mercury has been spinning blowers for years and they have the R&D to prove it. Just easier to make reliable, cost effective horsepower. Seems like once you go above 700HP NA, its time to start Blowing