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Originally Posted by sutphen 30
(Post 4912112)
what were the cam specs on this magical engine,,I can compare it to my 524 and 527hp cast iron oval port headed 454's.
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Originally Posted by jeffswav
(Post 4912073)
Lunati has removed most of its BBC cams off the website. Not sure whats up with that.
It was much better before. Lunati went the same way being under the Comp brand system. If you're lucky, you can find the download link for their catalog PDF. You can use the Waybackmachine to search the old Comp website to get an idea of what I mean. |
Originally Posted by jeffswav
(Post 4912072)
Actually just talked to him on Friday. Said he could get me more torque and HP with better fuel economy. Recommended a cam that was actually smaller than what I expected.
I like to cam so my WOT RPM is just on the other side of the HP curve. I also don't mind losing a few ponies up top, to get a good cruising base performance and valve events. There's also a trend to pull back exh lift and duration. No more exh lift than 1/3 exh valve diameter. Lots of good cam guys. Just make sure you go with one that has proven lobes that will love in perf marine. |
Tart... Is the "no further Lift than 1/3rd of the valve diameter" the general rule for Marine hi-perf pleasure boat engines only❓🤔
Or are Marine Racing engines for boats exempt from that general rule❓ I mean, I know tons of guys running more lift than 1/3rd valve diameter size ----- cars too! I generally like to run somewhere around .600" to .630" Lift at valve on my cams. I generally don't want or like getting too aggressive with valve Lift. Especially if I am looking for longevity, durability, endurance, etc... ...and I agree with you that I am willing to sacrifice a little HP for an engine that's going to give me good long lasting operation. Yes, I like good throttle response performance too, but not at the expense of reliability and dependability. I like going fast, but there is always somebody faster and I'm not trying to set the world on fire 🔥 😉 |
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