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I believe your asking about a 496MAG or 496HO...
If so, they are closed cooled motors and have a different water setup.
I have several Diacom readouts and all read 3-7 at idle and 34-43 at 5000+...

Everything you need to know...
http://www.mercruiserparts.com/selectDocs.asp?doc_nbr=15785

I use standard length Thunderbolt distributors (attached to a Crane HI-6M) because they seem to be bulletproof compared to the others out there.
That's what standard means :rolleyes:
Most all of...

Too tall for my application and they do not accept standard length distributors.
I too was intrigued with the Jr.
Dave

That would be tempting Craig but the hatch was already an obstacle with the Doms and new flame arrestors I built. My wife, as patient as she is :) would probably trump that thought :smash:

I'm...

I just thought I'd give a preliminary update with a first water test.
Spring is trying to let go and give way to nicer weather and I had an opportunity to go out and run in some nice 58* weather.
...

I spoke with Amsoil direct about my 588s and they recommended their 10-40 AMO for a 10:1, 5800 rpm motors. My clearances are standard.

Not sure yet Baja27,
Won't know for a few weeks but I'm not expecting any significant gains over the 4150s but I'd like to be pleasantly surprised :)

Dave

Well, The conversion is complete and the Doms are on!
Went with the carb guru at ProSystems.
Just waiting to get the modified hatch back as the ice is finally starting to melt :rolleyes:

 MEFI distributor $75, new pickup and module
 Crower Enduro 4.500 crank (ext balanced to 2398bw 502 ext flywheel/balancer), will include Mallory for internal balance if required) dyno time only...

Hi Eric,
Guessing 20lbs it shows $29 to your zip.
$100 to your door will work.
PM me your info.
Thanks,
Dave

Rogue,
Sorry those were sold.
Thanks,
Dave

Hey Paradox,
It's in good condition. PM me your email adress and I will shoot you a picture.
Thanks,
Dave

Sold and removed from list...
Thanks

Pics sent...

Have pics of everything on request...:USA:
Thanks,
Dave


 MEFI distributor $75, new pickup and module
 TB-IV harness $70pr
 TB-IV distributors $100pr
 (2) Fluidamprs Int 8” balancers....

Great for what they are but sell the 525EFIs with their pressed wrist pins, marginal crank, poor flowing heads and go with Mark (MER) or Eddie above ;)
You'll happier in the end and you have the...

Thanks Brian,
That's a great increase considering you already had the good intake setup. I'm thinking I should see that or better beings I am currently running the smallish Merlin 4150 intake with...

Still considering Mark.
Just a lot of coin right now.
Dave

OK,
I'm going to switch to Doms for my 588s.
I understand the 8082-1 works very well for this and I can get a pair very reasonable.
Is there a lot of massaging to be done with these?
Any other...

Mine is a winter conversion. I will report back when I have results.

Brian,
Have you come up with anything?

Thanks

Hey Brian,
Have you been back to the dyno yet? :bigear:
Thanks,
Dave

Mark,
If my memory serves me right Bob wanted me to run more in the 200 neighborhood but with the .664 lift it was getting close to the spring limit.
Again, going on memory only here :(

Thanks...

Geronimo...
My thoughts on rich condition are the same :)

Solid vs hydraulic, apples to oranges. These cams are actually not much less than yours :sifone:
They were also designed around a few...

My ProSystems base plates don't have vacuum ports because I wanted black ones :ack2: My bad.

Sounds like your on the same path and maybe I can piggy back your info :)

What intake were you using...