My goal is to have the fastest boat around, excepting the blowers.
Plan is: Have a 18' Wriedt. Very light boat and I'm told it will easily do 70mph. I want to try for 80. Dangerous I know but I'm 66 and don't care.
Using a 400 4bm sbc with a 327 crank. Offy tripower w/2GC's-capacity of 975 CFM, Brodix heads about 64 cc to make 10:1 & use pump gas, KB flat top hper. pistons, Eagle rods, Crower hyd. roller about .500 & .535 lift and about 220 duration with a large lobe seperation, 1.5 roller rockers w/ locks, roller chain with lock and button & 3" thru transom. I found what looks like some old real efficient looking hump type cast iron headders and riser, they look more free flowing than the Glenwood logs. Expect to scream 5,500-6,000 rpm regular with a Berkely 'C' impeller and stuffer grate. Large capicity oil pan, oil cooler, main cap stud girdle and cam girdle.
Because it's a sb may be able to keep it all in the box and make a playpen on top. Velocity yellow with white graphics & matching interior, named "Mongoose".
I'll only have a few thousand dollars in the engine. I figure that set up will stay together up to 6,000 rpm. Completely stock it's rated at 5,500!
I am open to suggestions as to improvements in speed. No, the the tri power and flat tops are mandatory. Even with it's flow problems it's still better than an 850 Holley, and I can run the 2bbl all day up to 4,000 on a tank of gas. And when I want more power I still have the equivelent of a 700 cfm 4bbl to kick in. Has anyone ever seen a tripower sb jet? If I can keep it all in the box, it'll be a sleeper until I start it up. It won't idle nice and the wot sound of a tri power gives goose bumps. The flat top is the most efficient piston for the sbc.