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Another cat build 340 king cat

Old 10-02-2020, 06:18 PM
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Default Another cat build 340 king cat

Warning long read.
So I fish the northern gulf and do some overnight rig fishing so I decided i wanted a cat to deal with our choppy and unpredictable waters. Cats are all the rage these days and for good reason so I thought I would see what I can find in any sort of reasonable price range. Well as you know any cat over 30ft gets expensive and at the end of the day its just a roomy good riding cc, not really worth the price tag to. In the summer months when we typically overnight theres plenty of pop up thunderstorms so if I'm going to spend a descent amount of money I want a few amenities such as a way to get out of the weather ,so the search went on.
I came across a couple of threads talking about BAHA cruisers 340 King cats so I dug a little deeper. It seems they check alot of boxes 3 sided pilothouse, stand up head/shower, hot water, 2 small berths , fridge, stove ect. Everything i read said they are built like tanks but the fit and finish is pure fishing boat. All of that is true.
I started poking around and pm'd a couple guys and a guy got back with me and his cousin had one he was looking to sell. I got a survey and everything structurally was perfect with no moisture or soft spots anywhere.
We agreed on price and now I just have to get it from Delaware to Orange BeachAl. The best deal I found was $4900 for the 1100 mi.ride so I decided to handle it myself




I was planning to have a trailer built but the boat was 1000 mi away so getting a trailer built beforehand wasn't going to happen. I get the bright idea to get some 8x8 hardwood timbers notch the bottoms to fit over the frames then set the boat on top. After some guesstamation on hight I decided it work.
So me , wife and dog head to Delaware. The boat was at a city marina in the grass blocked up for the winter. It had been raining a bunch including the day we were pulling shafts and rudders so the marina guys didn't want to get the travel lift out in the grass but after not taking no for an answer they agreed but we under a time crunch as they close at 330 and a cash bribe couldn't get them to stay. Everybody was very helpful and did what they could and we got it with about 15 min to spare.
Now she's on the trailer the adventure is just beginning more on that next time.

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12-08-2020, 04:56 PM
Castawaychris
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Default Motors



It's been awhile before today since I posted on this thread and I've made a big change in motor direction. I had 350 mercs for it but really didn't think that was enough hp to make running the boat fun. I think they would get the job done but kinda felt like I'd be working those motors to death. Then I get a phone call asking if I'd be interested in a set of 557 7 marines, that was a stupid question buuut how much? 2016 450hrs all rigging props pumps you name it everything for 25k. Only issue it on needed a rebuild. Since they are just a gm motor I had the powerhead pulled and took it to a race engine builder in MO that I'm familiar with. It looks like I will be about 5k on a rebuild plus labor to remove and reinstall. Im pretty confident that I'll be under 35k all in on these. I know I'll get blasted on this decision and thats ok but I feel more confident that I can work on these vs. a regular outboard. Theres really not a lot to these motors and everything seems pretty easy to get to.

If it weren't for the deal I got I wouldn't have went this route but it checked alot of boxes for what I need. I had the bracket made to handle quads so the weight isn't a factor as far as the bracket goes. Im not sure on weight distribution but I guess I'll cross that bridge when she floats. I have 0 concerns about sitting still as my scuppers are about 18" above the waterline but I'm a bit concerned about the running attitude. i have moved everything i can as far fwd as I can and im putting larger holding and freshwater tanks which if I had to I could use for balast. Those thanks are approximately under the driver's feet one in each sponson so adding 1k of weight that far forward should fix it if there is a problem. Flame suit zipped up and ready, have at it.
Old 10-02-2020, 06:29 PM
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I spent many an hour on one of those. The hulls are tough and they handle the Gulf of Mexico seas well. Biggest issue on the one we fished on was the bilge drainage. It had Mercruisers and the bilge water tended to accumulate in front of the engines. The flywheel would sling it up on the engine onto the electrical items. Try to keep the bilges dry. Also if you run them at cruise the range is not that great. I think they hold a couple hundred gallons of fuel. We always had to take extra fuel for those 70-80 mile one way trips. You used to be able to call the owner direct and get tech support. I think they finally closed the doors. I had a 296 cat with outboards made by them. The boat is still in service and has done well despite all the negativity towards them.
Old 10-02-2020, 06:36 PM
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Originally Posted by briankinley2004 View Post
I spent many an hour on one of those. The hulls are tough and they handle the Gulf of Mexico seas well. Biggest issue on the one we fished on was the bilge drainage. It had Mercruisers and the bilge water tended to accumulate in front of the engines. The flywheel would sling it up on the engine onto the electrical items. Try to keep the bilges dry. Also if you run them at cruise the range is not that great. I think they hold a couple hundred gallons of fuel. We always had to take extra fuel for those 70-80 mile one way trips. You used to be able to call the owner direct and get tech support. I think they finally closed the doors. I had a 296 cat with outboards made by them. The boat is still in service and has done well despite all the negativity towards them.
I didnt want to get the initial post to long but she will have 550 gal of fuel and outboards when done.
Old 10-02-2020, 06:37 PM
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Very cool. Looking forward to this one.
Old 10-02-2020, 07:56 PM
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I am all in too....

Looking forward to following this thread.

I wish the OP the best!
Old 10-02-2020, 07:58 PM
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Originally Posted by Barrington View Post
I am all in too....

Looking forward to following this thread.

I wish the OP the best!
she's about 75% done so I'll just tease you guys a little at a time
Old 10-03-2020, 04:07 AM
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Sweet Project, I recall seeing a 340 Outboard conversion a long time ago and it came out great(it might have been on boattrader). If your going to tease us, at least tell us what the hp plan is. Big twins? 400s?
Old 10-03-2020, 04:53 AM
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Nice.
There's a King Cat in St. Marks, that owner might be able to help
Old 10-03-2020, 05:33 AM
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Originally Posted by RumRunnerXT View Post
Sweet Project, I recall seeing a 340 Outboard conversion a long time ago and it came out great(it might have been on boattrader). If your going to tease us, at least tell us what the hp plan is. Big twins? 400s?
well sort of, I have a set of 350 mercs currently and I found a guy thats still doing turs that can make those 450 hp. I dont care about top speed but he says he can add 6 to 7 mph to a 4k rpm cruise. Getting the motors tuned makes me a little nervous but I think 700 hp just isn't going to be quite enough.
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Old 10-03-2020, 07:32 AM
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Hey Chris do you any updated pics? Where is she parked at now?
Old 10-03-2020, 08:15 AM
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Default So the adventure continued

We rolled out of Rehobeth Beach Delaware about 730 headed for Orange Beach Al it was cold and the wind was blowing pretty hard due to a front coming through. That is a big boat with a lot of fretboard so it was a white knuckle ride at times. We had to go across the Chesapeake bay Bridge and tunnel complex which requires an escort and no one else is around you. It costs $240 and they shut everything down to take you across. When we get to the bridge its closed to everything but cars due to wind. 3 hrs later we are crossing. All was well but we were behind on time and had another tunnel, which required an escort to go through by 330. I was hustling all I could and we get in a skinny construction zone ,2 lanes no shoulder, I cross a rough bridge look in the mirror and my trailer tire is bouncing beside me. I was able get infront of it and let it hit the back of the boat and came to rest 20 ft behind boat. I had all traffic stopped but took less than 30 sec and I was back on the road.

I was about a 1/4 mi from an exit which lead me to Portsmouth trailer repair. They have a huge parts and service dept. I need a new hub as the boat had slid forward a couple feet and put too much weight on front axle and sheered the lugs off. They had me going in less than an hr and I had found a tow truck company a couple miles away that was going to pull it backwards but had to get there.
I didnt make it 2 blocks and there goes the other side. I picked up tire went back and had them put on the otherside.

At this point I had the tow truck come to me. Didn't take much but I was fully expecting $3 to $400 and much to my surprise he charged $50 cash I gave him $100 and gave him a big thank you. I've owned a trucking company and getting raped on things like this is the norm and these guys were more than reasonable.

At this point its after 5 and my daylight is about gone to run oversize so straight to hotel.

So now we are at sat am and you can't run oversize on Sunday so I have to get on the west side of Atlanta or I will have to after 9 am on Monday to go through Atlanta. So we hustle all day and really pushed and really ran about 45 min too late but made it to union city ga on Atlantas west side.
We just googled hotels and came up with a days inn that has big parking. Days inn isn't my 1st choice but we are out of daylight and options so I send the wife to check in and im walking the dog and hear about 10 gunshots. Well come to find out there's a car jacking in a McDonald's drive thru. At this point its pretty clear this isn't where my type belongs but we are here and both of us have concealed carry so just gotta deal with it.
We rolled out Monday am and ended up with 2 blow outs before making it to OB.
She is home now the work begins.



So the old 350s and running gear out time to clean up the greasy mess.

Last edited by Castawaychris; 10-03-2020 at 08:30 AM.
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Old 10-03-2020, 09:06 AM
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I’m in. Sounds dumb but this has been a awesome adventure so far!
Old 10-03-2020, 09:28 AM
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Originally Posted by kurttruk View Post
I’m in. Sounds dumb but this has been a awesome adventure so far!
For some reason everything i do turns into an adventure but I guess thats what keeps life interesting.
Old 10-03-2020, 10:15 AM
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I really like these boats would be nice to keep it inboard but seams like all the inboards have a lot of issues due to water
Old 10-03-2020, 10:18 AM
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I was hoping you would do a build thread chris. It's gonna be a monster by the time you are done, get her finished and I'll buy it back.
Old 10-03-2020, 10:20 AM
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Originally Posted by BST24351 View Post
I really like these boats would be nice to keep it inboard but seams like all the inboards have a lot of issues due to water
This was my boat, Chris bought it from me.

I thought about putting diesels in it but every one i have seen with gas or diesel has been a rust bucket. The engines sit under the deck, in the lowest part of the bilge, so they are pretty constantly in salt water. The shaft coupler likes throwing water all over everything too. It's gonna be way better as an ob boat.
Old 10-03-2020, 10:25 AM
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I’ll be following right along. Any idea of what she will weigh, wet?
Old 10-03-2020, 10:53 AM
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Originally Posted by CapPhil View Post
I was hoping you would do a build thread chris. It's gonna be a monster by the time you are done, get her finished and I'll buy it back.
if it turns out as planned I dont think ill want to give it up.
Old 10-03-2020, 11:02 AM
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Originally Posted by wdlfbio View Post
I’ll be following right along. Any idea of what she will weigh, wet?
Here's the #s I put together for best guess.
The boat weighed 13800 on the travel lift with about 60 to 70 gal of fuel.
13800
. -2000 inboards and running gear
. =11800
. +1350 for 2x350 merc
. 400 bracket
. 430 diesel gen
. 200 for the extra fuel tanks
. 200 insulated coffinbox
. 500 a/c extra batts , seating misc
. Roughly 15k before fuel , ice , freshwater and asses.
Old 10-03-2020, 03:43 PM
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So you paid $45,000 with gas motors. I guess im in the ball park @65.000 with 330 hp Cummins diesels rebuilt with 60 hrs >?

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