Just guesses are fine as well.DAmnons specs are correct, but also remember that when you change rocker ratio you also end up changing duration by 2-3 degrees. Infact some of the research I have done say they have the same hull as an Eliminator sport cruiser? Taking into consideration the stock 305 pushed the boat to 50+ (on gps btw) what can I realistically expect from this new combination? Im expecting at the least an extra 100 horsepower and 100+ ft lbs. And I know this is a light boat with a decent hull. I?m expecting the engine to put out approx 350-375 horse and approx 400+ ft lbs. I plan to run a edelbrock performer RPM intake, again do I need to worry about the ?marine? version?ģ.ĝo I need a special oil pan or will a stock auto one do? I will have a windage tray.Ĥ.ĝo the exhaust manifolds require special gaskets? Or will stock exhaust manifold/header gaskets work?ĥ.ĝo I have to buy the coupler that bolts to the Crankshaft? Or can I get the ?triangle? style that will bolt up to the flywheel? Since this is purely a freshwater boat, do I need to worry about special (marine) head gaskets?Ģ.

So to sum up my long post I have a couple questions (mainly on the differences between marine and auto).ġ. Ive done some research on here and many people have ran a setup similar to this or the exact same and for the most part I read good results. My plan is to re-ring the stock pistons, new bearings everywhere (rod, crank, and mains), then an LT4 hot cam I also have laying around. It is a ?Vortec? headed block with less than 45000 miles. I have a 1998 ?R? motor from a Silverado. Here are some plans and since you guys are the experts I was wondering what you think I could realistically expect? This impressed me and I figure the boat is very light (probably about 2500 lbs). But it?s a solid 50 all day long with 4 adults. And it runs great with a 19 pitch 3 blade prop I am able to get 54 out of it by myself. The current setup is a 228 horse 305/MC-1 drive. Hence I have decided to build a 350 for the boat that I have laying around. Now I came over from the Car world and its perfectly normal for me to not be able to leave anything alone. Ive taken it out a few times and it has run flawless. I am the new proud owner of a 1980 Bahner Sport Cruiser (21?) and I love the boat. Ive been hanging around for quite a while, however this is my first post I believe.

Vortec 350 lt4 hot cam dyno