whats truly needed to swap an ls engine
07-18-2016 | 01:04 PM
#252
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Joined: Oct 2011
Posts: 273
Likes: 4
From: Dayton, OH/Burnside KY
Thanks guys!!!
The Flappers are from Hardin Marine. I didn't think it would be a good idea to run rubber ones with the exhaust being dry so those were the best option. And they don't look to hateful either.
The Flappers are from Hardin Marine. I didn't think it would be a good idea to run rubber ones with the exhaust being dry so those were the best option. And they don't look to hateful either.
07-18-2016 | 09:58 PM
#255
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Joined: Nov 2004
Posts: 14,090
Likes: 3,677
From: On A Dirt Floor
07-18-2016 | 10:00 PM
#256
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Joined: Dec 2004
Posts: 484
Likes: 1
From: Melbourne Beach, FL
Yep, got the exhaust all dried up and looking and working the way I want it. I cut the old tails off and welded new ones on with -AN fittings inside the transom.
Then, after measuring and remeasuring for a couple hours (and a couple of beers) I got up the courage to cut the holes I the transom for the thru-hull fittings.
I sealed the holes with epoxy then siliconed the crap out of the fitting and got it installed.
My first real trial was this past weekend. We had the annual Checkmate Owners Rally at Lake Cumberland. I was able to put about 2-3 hours run time on her. Didn't really get on it too hard, I was mostly just checking things out and shaking it down. Everything seemed to be working pretty well. I am going to have to do some tweaking to the coolant crossover system, but that's going to be easy. Once I get a few of the little things figured out, then it'll be time to start playing!!!
https://youtu.be/MtwwjdHgAr8
Then, after measuring and remeasuring for a couple hours (and a couple of beers) I got up the courage to cut the holes I the transom for the thru-hull fittings.
I sealed the holes with epoxy then siliconed the crap out of the fitting and got it installed.
My first real trial was this past weekend. We had the annual Checkmate Owners Rally at Lake Cumberland. I was able to put about 2-3 hours run time on her. Didn't really get on it too hard, I was mostly just checking things out and shaking it down. Everything seemed to be working pretty well. I am going to have to do some tweaking to the coolant crossover system, but that's going to be easy. Once I get a few of the little things figured out, then it'll be time to start playing!!!
https://youtu.be/MtwwjdHgAr8
It doesn't sound too loud to me.
07-19-2016 | 05:19 AM
#257
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Joined: Oct 2011
Posts: 273
Likes: 4
From: Dayton, OH/Burnside KY
07-19-2016 | 05:32 AM
#258
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Joined: Oct 2011
Posts: 273
Likes: 4
From: Dayton, OH/Burnside KY
I did get to park it next to a couple of other 253 Convincors at this past weekend's owners rally. One had a 454 mag and the other a hp500 and The back of my boat was sitting 2-3 inches higher out of the water than theirs. The one time I revved it up to about 4500-4800 and trimmed it just a fuzz, it started shooting a little rooster tail. But I did see 60 on the GPS recall, which is almost as fast as I ever saw with the stock 454. I have a 1" driver spacer as my disposal that I might try, and with the prop being so close to the surface, I'm thinking I will have to use something other than a Mirage. Lots of playing with props and drive heights in my future, but for now, she's on the water!!!
07-19-2016 | 05:57 AM
#259
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Joined: Jun 2009
Posts: 339
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From: League City, Tx
Yep, I ended up using a brass Jabsco pump bolted directly to the crank. Then fabbed up this bracket. I bolted it to the block where the factory A/C bracket goes. It aint the prettiest, but I didn't want to go all out till I knew it would work. If everything seems fine with it, I'll CNC a new one this summer sometime.
any more pictures of the mount that you made?
I'm assuming that you have an under drive crank pulley? Any issues with fitting the pump on the snout of the crank pulley?
What did you use for the front accessories? Car or truck?
How are you liking the cam that you have now, any plans to go bigger or smaller?
Thanks
07-19-2016 | 02:24 PM
#260
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Joined: Nov 2005
Posts: 4,554
Likes: 3
From: Fredericksburg, Va
great job...the power these things make is staggering !! also if anybody is interested, I have a fresh 410ci LSX all the best stuff, eagle, crank, weisco pistons, brian tooley custom cam/valvetrain, GMPP CNC ported heads, break in only, 600+hp $6500
