Full Force

Seems these brands of lifters can take some pressures then, I never ran morel, so I cannot say good or bad, or what one is better, I just know what I have and been told by Engineer about features... Mine seem ok so far to me lol

buck35

Back to cams, as phragle mentioned earlier, theres been literally 10s of thousands of 454 and 502 builds in the last several years. Some carbed,some efi, there should be a fairly common recipe for an extra 100 horses that will live a great while, and not eat up bravos, as the cost conscious are concerned about.
Personally , I'm staddled with a mefi 1 controller so there seems no easy way out, carbed aps have a better chance at in boat tuning to insure survivability after mods.
I'm not quite prehistoric, but pretty darn close so tuning in a boat on a laptop....nahh, aint happening.

Full Force

I agree at this point unless you have a serious custom engine, a shelf cam works fine for most, I mean nearly all other 540's made more power then mine, they are built right, compression tested great, dynode nearly identical and just are not big HP at all...

too bad my designer would never chime in and offer his thoughts as to why, good or bad he should... if nothing else defend his build he spec'd

ICDEDPPL

I ran straight 50 weight with my High Rev Morels . No issues. Then again I never start it in less that 70* temp. Possibly that 10w40 recommendation could be for automotive where starting temps may be way lower.

Gimme Fuel

Buck,

I did a healthy 540 MPI build with a MEFI 1 controller. I still have ecu a d matching cam as a matter of fact. Roughly 9.2 CR, AZSM extrude honed lower intake, dart 308 iron eagles, custom cam. Stock injectors. Was an awesome motor while it lasted. Suffered NON-VALVETRAIN related issues......oil pickup that fell off to be exact and spun Bearings......lessons learned blah blah. Should have just bought new block and put that one back together as it was but got greedy.....ditched MPI and MEFI, went to AFR's and rest of the koolaid. It was supposed to be 600-620 hp and was every bit of it based on boat speeds. I don't know what your plan is, but Mark Boos did the programming by mail and hardly needed an adjustment after initial start up. He is the man for mail order tunes. I still have that cam and matching ecu if you are interested.

StraubTech

It is CID, rpm and the heads that determine a camshaft. If you were to take 3 502's and put Dart Pro 1, Brodix BB-1, and AFR305 and set a peak of 5800 rpm on all 3 you could make the same amount of power but all 3 would require a different cam to make that power. To me here lies the issue with comparing combinations. Catalog cams should include what cylinder head to be used with it. An AFR head will not require much duration split, so a single pattern in most cases works just fine. A Brodix headed engine usually needs a good amount of split based on their I/E ratio.

14 apache

You say your engines are down on power compared to the ones built like yours. Were they all ran on the same dyno as yours? How are the speeds of your boat at WOT?

272lsformula

Struab or anyone, which off the self cam would you recommend for a 540ci 8.2-1 morel lifters dart pro 1 345 and 8-71 blower 5-6lbs of boost?

HaxbySpeed

What rpm do you want to make peak power? I used the biggest lunati efi cam in a 540 with ported 088 heads, 3.3 whipple at around 7#s boost. It picked up 1 or 2 mph from the custom cam that made 830 hp with the same combo. So, I'm guessing it was around 850. I think it pulled to right around 6000 in the boat. I used the Lunati voodoo 245 / 255 in some 557's with afr 335's and 4.0 whipple made 1080hp fully dressed through e-tops at 58 or 5900, 10#s boost.

272lsformula

6000 rpm. Dry exhaust pump gas 92 oct. no intercoolers yet so trying to keep the blower speed down.
Thanks for the response.