lots of carb bashers here...not much to go wrong with a carb, and the newer ones like quickfuels are very adjustable thru out the entire band with a 02, I do not blame you at all for running one...sometimes getting the EFI right and keeping it that way can be a real pain...

im interested to see the performance vs the bbc. see how much the numbers actually change. I have been contemplating doing this on my next project just not sure if I want to spend the money since I have all the bbc stuff though.

At what point does the LS motor have to give way to the BBC? I would be willing to bet an LS motor will blow away a 330hp 7.4 and a 365hp 454 Mag. It would probably beat a 415hp 502 mag. I am thinking the Merc 525 will be where the big blocks start gaining on the LS but I would bet the LS would perform better below that. LS Engines are awesome and move a ton of air. Cant wait to see the results of this build!

My original goal was to build this and try to equal the power numbers of a hp500 but with a 400-500 pound weight savings. I know a guy with my same hull that had a hp500, so I'll be able to compare the numbers. Although my engine builder and quite few other people tell me I'll be well over 500hp, I'm not counting on it. Time will tell here shortly. I took measurements for the wiring harness to my Daytona ignition, so once that gets here, it's off to the dyno. I'll keep ya posted on what it does.

The HP of a big block is easy to match. The torque is not. That being said, the LS series of engines are torque monsters for their size. The dyno results will be interesting.

especially being a stroker it might equal the torque. if it does and makes the number hp wise it might be a viable replacement with weight advantages. only thing is a stroker isn't going to be super cheap I know the bbc stuff isn't either but it is more available and easier to obtain.

I'm pretty sure that even being a stroker, it won't hit the torque numbers of the big block. Even if it comes close to the number, it will be higher in the RPM range. But I think I will be able to overcome that with the combination of the weight loss (we all know how different our boats act with just us in it compared to a load of people) and the fact that I will be able to run a smaller prop since I will be cranking it to 6500 rpm. I think the dyno will really tell the story of how its going to act. On a side note, my stroker kit really wasn't as expensive as you might think. The expensive part comes in with the lack of a used parts market for marine stuff. so everything I bought was new. Actually, I had more in my headers than I did the stroker kit, lol.

Cory, speaking of torque, and I agree with whats been said about the lack of here, wouldn't the performer style intake been a better choice in your app ??? saw a LS manifold test a while back and thought those had a more torque in the mid ranges ??

That was actually the intake I had originally picked out. But in talking with Bob Madera when specing my cam and my local engine builder, they both said the Victor Jr. would be better. They thought that the dual plane Performer would probably make a little more torque down low, but not enough to offset how much power I would lose up top. My heads and cam are designed to pull up to 6500-6800, and the performer would choke out at 6000. Bob also said he could close up the lobe separation a little since I am running headers that doesn't allow water to mix in with the exhaust until the transom and that would really make up for the low to mid range power I will lose with the Victor.

gotcha...Bob would know