I thought that 500 Bulldogs already have aluminum heads made by Edelbrock?

Don't forget the pricey exhaust system. If you already have headers with dry exhaust, 600 hp won't be a problem. Also, n/a 600hp should be easier on the drive since superchargers build (in my opinion) excessive mid range torque. My friend had supercharged engines in his baja, mid range torque was amazing, but always thought his drives were going to blow. He toasted one 3 months later, replaced the drive and sold the boat.

You are thinking of 525EFI's.

A buddy of mine had bulldogs in his Hustler, when we pulled the engines for a build they had aluminum heads on them. If not stock then someone must of changed them before he bought the boat.

Yep, I was thinking on the lines of what Ezstriper said. Should be able to get by with 89 octane. Did look at trading them for 525's but have too much money already in them and everything is new so keeping them. Does anyone need a set of perfect blowers for fraction of the cost. let me know have receipts to go with them.

They do not have aluminum heads stock.

What is a 500 bulldog ?.....I have owned 540 Bulldogs...Tall deck mark IV..Rect. port Iron GM heads...

Get ahold of RM Builder- Bob Mandera! He was talking to me about the bull dog engine and said its easy to get another 250-300 hp out of it.

They're 540 ci. 700 hp n/a is about it even with the best parts unless you want to spin over 6000 rpm.

i also thought the bulldog was a 540.i just thought used a 502 block and bored and strocked to get540,i also heard flat tapplet hydr cam?,,,anybody?