Offshoreonly.com - would this 540 be a good buy?

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - would this 540 be a good buy? (https://www.offshoreonly.com/forums/general-q/260595-would-540-good-buy.html)

Thunderstruck27

08-19-2011 07:47 AM

Quote:

Originally Posted by stevesxm (Post 3482813)

well... parts are parts but unless the guy doing the building has some skills, you could easily be buying shiny new junk. i particularly like the " SHOULD make 600 hp.." seems to me that you go thru that sort of effort, then you pay for the dyno days so the motor actually has some credentials to support the claims...

I totally agree with stevesxm...this coming from a consumer...not a builder. It seems to me that if a professional "shop" builds an engine like this the buyer should get some kind of Quality Control documentation (dyno sheet) showing exactly what kind of HP/Torq the engine is capable of generating. The shop may build great street engines, but how many marine engines have they built, etc. Good luck with whatever you decide, but do due diligence.:drink::drink::drink:

jeffswav

08-19-2011 08:43 AM

Sounds like a decent price, I would be concerned about the cam. Get the cam specs and post them here. If it is not marine specific, it will most likely need to be changed. A 540 with Dart heads should make well over 600HP with the correct cam.

bobl	08-19-2011 11:12 AM

Inconel exhaust valves are a must on a marine high performance engine.

Bob
Full Throttle Marine

picklenjim

08-19-2011 11:36 AM

296/302
.566"/.566"
112 LS

I would think being a 540 it could use more lift.

jeffswav

08-19-2011 05:28 PM

That cam is Weeeeek !!!! The cam in my 489 is bigger than that.

Philm

08-19-2011 05:42 PM

Is that duration at .050? If so, that is waaayyy to much duration for a marine engine, even with dry exhaust.

jeffswav

08-19-2011 06:31 PM

Quote:

Originally Posted by Philm (Post 3483663)

Is that duration at .050? If so, that is waaayyy to much duration for a marine engine, even with dry exhaust.

It has to be advertised....

zeke	08-19-2011 06:42 PM

i could not find cam specs and i googled it a bunch of times. this motor wont sell fast either around here. so maybe ill get it cheaper

jeffswav

08-19-2011 08:06 PM

Quote:

Originally Posted by picklenjim (Post 3483354)

296/302
.566"/.566"
112 LS

I would think being a 540 it could use more lift.

Where did these come from?

zeke	08-19-2011 08:52 PM

http://www.compcams.com/Company/CC/c...?csid=450&sb=0

hopefully you cam pro's can tell me if this cam would work or not

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