Yes sb. I know enough that marine is completely different . If my drag engine guy built my marine engine I know it wouldn't last. That's why I want marine people. We talked about clearances and he knew they where wider but didn't think that was to big of a deal. Well it takes 20 minutes to pull my Malibu engine and a lot longer for boat. I bought this boat the same weekend my friend brad died on lake Cumberland. I called him 30-45 minutes before the skater flipped about how good some of the stuff I got with the boat was and told him we are pulling to bring to freshen up. He was 20 minutes from me and very helpful. Now I'm just trying to do it myself but right. It took the guy that reworked my heads a month to convince me not to run a solid roller because of all the idle time I guess. He did all brad smiths heads. That's part of why I have so many questions on cams. If it was racing it would have a solid roller 800 lift on 107-108 lots of duration. But this is not a drag car it's a boat and that's where guys like you and others come in. I learn everyday man and never will I say I know it all. We do some cool stuff but a friend of mine dean louckes makes me look like a finger painter compared to his work. I'm just saying marine experience from you guys is very important to me then what a drag builder can do for me right now. 2 completely different animals I have come to find out.

Yes black they are and that's why it amazes the **** out of me. I did watch a video of reversion with kinda the same setup and low and behold a little bitty stream was started and it had me wide eyed enough that I had to get drunk to believe what I was seeing instead of the other way around and I don't drink.....

Eliminator As you stated drag racing and Boats are totally different. let's start with running time and RPMs drag cars very high rpm short bursts 8-10 seconds, boats 5500-6000 rpm average for extended lengths of time 15 min or more. Cooling Systems are #1 priority. As you know Cams are an exact science that are taylor made to each engine combs, Hull designs, weights, gearing and props, NA cams are completely different from blown cams due to intake air inertia and exhaust gas scavenging as related to exhaust valve closing timing for optimum cyl filling. On a blower motor It is very important to keep the incoming charge in the cyl. and not blowing the fresh charge out the exhaust. you don't need a Stupid amount of duration and/or lift depending on your desired RPM range. In my opinion lobe separation on your blower motor will most likely fall in the 114 Range. Now with all my rambling just scratching the surface Please wait for Bob to get back to you or contact one of the other engine builders on this site!! Sorry for rambling on!

Yep I agree . I have had some people say you shift at 8000 rpm .... Wow!, then I explain rpm is runs per minute and I'm done in 8 seconds so do the math. And that is why I need good advice for marine stuff without people being ****ty. 6000 every Saturday and Sunday for hours on end is a whole hell of a lot different then spinning 8-9000 for 7- 8 seconds. I'm looking forward to bob recommendation. He kinda gave an idea a week or so ago but now I have flow numbers etc etc so he will nail it down I'm sure from what some have said. Thx

Good choices, sorry for the confusion. You're wording about 502 vs 540 sucked lol, as did my interpretation of what you meant.

Doug,
The cam came straight from Crane. Period. Exact numbers.

Bob,
The compound variable with what either of us has to deal with is what the customer does have we have advised him on what he needs to do. Just had a customer come to me with a 434CID SBC that does not run, runs slower than this 406CID. He wants a cam change. I remembered talking to him several months ago and at that point we discussed his oil pan and headers. Pan is not a rail kick out, headers are 1 5/8". I asked him if he had changed the headers and pan. He said no. I told him no cam change was going to improve the car until he got the supporting components to achomplish his goals.

If we advise the customer on what to do and he chooses not to all of it then we have NO CONTROL.

will you just go away con man,we have no use for a liar and an incompetent sales something or other.

Chris - you do realize that, you, entering into an exchange with rmbuilder, is like you, pissing into the wind?

well the con man thinks he's smarter than Rmbuilder.