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Manifolds on 500HP's.....

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Old 01-17-2008, 07:23 AM
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Jeff....I do plan on upgrades for the 500's. We are going with a bigger cam and better valves for now. Next year we will probably do more upgrades to them. If I can get headers for the price of manifolds I'm in. Besides who doesn't like more bling???


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Old 01-17-2008, 07:50 AM
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Give Brownie and call at Stainless Marine. I think you'll be surprised at what you can put thru their stuff.
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Old 01-17-2008, 02:10 PM
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Actual headers will also make changing spark plugs easier.
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Old 01-18-2008, 06:18 AM
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Originally Posted by CAPTAIN CHUCK
Jeff....I do plan on upgrades for the 500's. We are going with a bigger cam and better valves for now. Next year we will probably do more upgrades to them. If I can get headers for the price of manifolds I'm in. Besides who doesn't like more bling???


Chuck
I hear you on the bling. Some advice, the first thing I would do to that engine is either new heads, or work the current heads. They are a big limiting factor. I think you will be disapointed with just caming it up, and no head work. I have a buddy who has just gone through all this. Rebuild hos carb 500, new rotating assembly, little better than stock, higher compresion, bigger cam, bigger carb, he only gained 2 mph. when up 1/2 a pitch prop. The heads are his limiting factor. No sence buying headers when the heads don't flow good enough.

My 2 cents.
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Old 01-18-2008, 10:53 PM
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Call David Wade Marine in Baton Rouge. I dont know if he still has it or not, but he had the cig that went in the woods a couple years ago on the tf200. The motors were fried but I believe they were hp500`s. you may get a good deal on used parts
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Old 01-19-2008, 04:06 PM
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CJ I am thinking of putting some Dart heads on the engines. Do you think that would be a good choice? I have a set already so I would only need to buy 1 more set.
I have a 540c.i. Bowtie engine that I may start to cannibalize. The 540 is down to the short block so the parts are readily available. To many options in to little time with not enough money = a big effin headache!!!

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Old 01-19-2008, 04:07 PM
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Thanks bro! I will give them a call first thing Monday morning.
Take care!
Chuck

Originally Posted by johnny g
Call David Wade Marine in Baton Rouge. I dont know if he still has it or not, but he had the cig that went in the woods a couple years ago on the tf200. The motors were fried but I believe they were hp500`s. you may get a good deal on used parts
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Old 02-14-2008, 12:56 PM
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I am still draggin azz on this manifold issue. Can anyone give me some input on Imco Powerflow manifolds? Are they any good? Thanks guys.

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Old 02-14-2008, 03:34 PM
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They are fine, but they do have wet joint between the riser and manifold. Gils probably flow a little better. Also, you would probably need a new bracket for ALT/PS. I did when I put Imco's on my 454mag.
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Old 02-14-2008, 09:19 PM
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Thanks Griff..... The search continues.....
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