If that's all your looking for is 550 hp, your stock heads with some porting will work. Stay around .600 lift with a hydraulic roller camshaft.

G-I'm no expert but a 1050 is more carb than you need. A Holley HP830 will flow plenty, have better throttle response and idle better. CPPerformance has them for $620.
For Intakes, go with Dart single planes or Edlebrock Air Gaps. The Darts will probably make a little more HP up top. About $300 each.
Cams see this thread & go with the 141's
http://www.offshoreonly.com/forums/s...threadid=42146

With some head work and good exhaust you should be right in that 550hp range w/o a problem.

BTW, what are you doing as far as exhaust????

A Merlin single plane intake has smaller runners than the Dart. Probably better suited for a low RPM boat motor.

I would listen to JimV and Griff, they seem to be on the same track I am on. I like the Air Gap Edelbrock, 830 carb.
JimV seems to know more about boat heads than almost anybody and he does this for a living:D :D

Okay - finally got the parts list/pricing. Anyone have an e-mail address I can send a scanned copy to - just to take a peek at and perhaps comment on?
He's at:
$3410.00 Parts/tax
$2217.00 Labor

Hmmm...looks like he forgot about $1000.00 per engine when I spoke with him last. Now it's up to $5600.00 PER ENGINE.

I must also be one of the lucky few to have had good experiences with Dean's carbs too. Funny how two shops that dyno'd my engine said the carbs were "right on". Must have been a fluke. Come to think of it, there must be a lot of flukes around here.

JUST TRYING TO HELP!

Hey G, let me know if you would entertain shipping those a little distance, as I have a great machine shop and assembler I can vouch for. If you like, I get get you two together on the horn and discuss options and costs. I guarantee he won't BS you.:rolleyes:

I had him do all machine work and short block assembly on my 540. I handed him all the parts and I walked out for $1400. Dean helped me every step of the way with final assembly, WITHOUT SAYING IT. This shop never got the not invented here syndrome and knew of Dean well. Went back later and spent all day on the dyno for $500 and found 95 Hp hiding in the ignition system. ;)

Last but not least, I suggest going with your gut instinct. If you don't feel comfotable with the shop, LEAVE. Even if you do, watch and ask. If they get defensive, LEAVE (with your ****).

G-Force,
e-mail or call me. If this is for one engine, I'll save you a small fortune and make MORE POWER!!!! 704-574-4020 I'll even sell you the parts at much better prices and get you the right stuff!!

Brad Perry
 

Brad Perry, where were the 95 ponies hiding? Was it a fluke? Did the first dyno get the carb(s) to work???
Just trying to help!!

Looks like Blown1500 is going to have my engines in the next week or so.
Going to collect my engines ASAP and send them down to him to get worked on.
Thanks for all your help/advice guys....

A Dominator is a P.O.S. out of the box anyway. I had to send two back because of defections, 1 didn't even have jets in the secondary. I know from experience on a previous 502 solid roller motor that it is too much carb..an 850 will work much better. If you look at what a comparable Demon runs to a Nickerson massaged Carb there is not much cost difference. The main difference is Barry Grant does all the mods Dean does before they ship.

I gave BG all the info I could for my 632" (large solid roller) tunnel ram motor and they nailed my set-up, only thing the motor wanted was 2 MORE jets all the way around. It idles @650 in gear, never loads or hesitates anywhere. Bottom line is do your own homework and know what you are paying for. Maybe I have a fluke set of race Demons. :rolleyes: :rolleyes:

Another factor to consider might be how much an engine builder charges to tune and or modify that "stock" carb that might need some addnl attention. Most people don't work for free.;) ;)