heres a complete new setup, 482ci, std 454 bore, 4 bolt, eagle crank and rods, KB forged blower pistons, comp blower cam, milodon 10qt offshore pan, weiand 177 with 4-5 and 6-7 psi pulleys, 7500 obo, Rob

does a blower help to rise hp more at midrange or at high rpm´s? my intend is to have the horses at medium rpm´s. is than this conversion the right thing?

chris

both, these blowers start making boost as soon as you start coming on plane so boost in H/P comes thru the midrange as well as full throttle...

You don't need actual hp in the mid range. You need torque. Roots blowers, like the 177 make lots of torque in the mid range.

thanks griff, thats what i want to hear. :erna ehrung004:

how much will the blower increase my fuel consumption? I think/fear in the end it will be very thirsty?

It will use the fuel that a 550 HP engine should use.

Don't forget that if you get interested, I have all these parts on my shelf that I would like to sell.

I am in the middle of buying parts for my personal boat, so whenever I sell something, I can buy more parts that I need.

Jeff, i want to do the upgrade together with bottom end earliest in summer or fall. the other thing is, that i will need the parts for two engines and i think you have parts just for one.

Chances are you will have to accumulate to get this done.

THere are 2 long blocks out there that are for sale that need rebuilding.

Good luck

454/365hp mags will burn about about 35 gal/hr at WOT
525sc's will burn about 50gal/hr at WOT

thats very close to me thoughts, because 50% increase of horsepower and 50% increase of fuel consumption sounds logic. i hope its not more.