Let me put on my internet expert hat... Lemme tell you somethin, you think 85 is fast? I've got a 1991 Kawasaki SuperChicken that doesn't run yet but when I was towing it home, I got the truck up to 55mph, which is the same as 85mph so its really not that fast. For real though, man 85 has got to feel like light speed. I've serviced and repaired a lot of skis, everything from gp1800r's, ultra 310x's, rxt-x-300s, down to 94 wr3gp's and 587 seadoo sp's. Each one is fun in its own way, but not a single one will touch 80, This thing of yours is absolutely incredible and so cool. Keep doing what you're doing guys, always exciting to see what you're up to.

Engineers only get along with other engineers! And even then they argue endlessly! I work at a mine and today all the engineers came back to work! Talk about LOUD!

Love that you made friends at the scrap yard

The 243/799 are the heads all the LS fanboys want. I buy the long blocks for $500 and sell those heads outright for $400, then install the standard 706/862 heads which have slightly smaller valves. They have 61cc chambers VS the 65cc chamber on the 243/799. the 706/862 head MAKE MORE POWER than the heads everyone wants. The added compression more than makes up for them flowing a little less. Also make sure to get new GM plastic lifter trays, they control the lifters are are super critical... Also the DOD units won't work. You can also bore the 5.3 out to 5.7 and run ls1 3.9" bore pistons.

Finally had the time to watch this video and you guys didnt dissappoint. Not that you ever do, but this one really hit the spot, it had just the right amount of shenanigans. Loved to see the weight... Oh, and you guys would sweat bullets to learn what an "LS" costs here in euroland... I am actually a bit pissed off there is still, as far as I know, no credible and good value marine variant or conversion kit of LS motors... still running variants of the good old smallblock. Kind of ridiculous thinking I could then repower my boat for a few hundred dollars and gain horsepower instead of it costing 10 grand+ if I want to do it as it is now...

its about time you guys source a 2005 all aluminum block 5.3l!!!!!

Basically about a year ago I bought 2 shirts to support the channnel. One wash ripped the entire decal off. I would love to get a nice shirt but I’d rather just donate money if the shirts are garbage.

Got to love another engine.

Nice! Sale all the other LS's and the internals of this one and get a 4in stroke and bore it .30 over and Baam! 6.0 liter!

An aluminum 5.3 would pair well with a side of small turbo at 5 or 6psi. Should be good for nearly 600 crank with a healthy cam and valve spring upgrade at 7000rpm.

Your pick and pull videos are great.

A good thing about the LH6 is that it has very thick iron cylinder liners that can be bored out to LS1 size. I wouldn't go that far but .060 over will give some 10 more cubic inches. DOD stands for disappointment on demand. edit: A bad thing about the LH6 is liberating them from the vehicle. Everything interferes with everything else. GM makes a valley cover that blocks off the DOD oil passage crap that they used on 4.8 engines that had the passages but did not have the DOD lifters and cam. I have an Arlington Airport picknpulled LH6 and found the valley cover at picknpull in a 2007 van with a 4.8. Another way to go is use a tap to cut threads in the top of each oil passage hole and thread in plugs to seal them. Good job and good luck with the new engine. 👍

Left hand threads on the fan shaft nut

Been following you guys for a couple of years now. Your content is the best. Keep it going. 👍😂

I feel so called out in this video 😅 AS IF you didn't yourselves know this is the MOVE

We are like 4 to 7 weeks away from the RIVER!!!!!!!!

good job guys - it only goes 85 mph

One other thing I was thinking is, the difference in base power between the 5.3 and the 6.0 is only 15 to 30 hp depending on the variants. They both have the exact same 3.622 inch stroke. The 5.3 has a 3.78 inch bore. The 6.0 has a 4inch bore. The power gained from a difference in .22 inches of bore can easily be made up by tuning and boost. The performance advantage of the 6.0 liter over the 5.3 liter isn’t substantial enough for anybody to be obsessing over. I think it is just a psychological thing where everyone feels like they need to have the bigger engine. There are so many 5.3’s out there making serious power. If I had my choice to build a booster ls I would always pick the 5.3. There are so many more of them available and they are significantly cheaper than the 6.0’s. Building boosted or big power engines can increase the likelihood of engine damage or failure. I would rather buy replacement or back up engines that only cost $300 to $600 that are way more plentiful and available with a better chance of finding one with low mileage, than an engine that is $600 to $1200 and becoming harder and harder to get your hands on where you don’t have as much of a selection or chance of finding a low mileage engine. If the goal is to build a naturally aspirated engine and you are trying to make as much power as possible then the advantage of a 6.0 is a bit more obvious, but if building a boosted setup, the advantage of the 6.0 just doesn’t seem as critical. You can gain up the difference in performance easily just by tuning not to mention you will have extra money for better parts by buying a cheaper engine! Bottom line, if anyone commenting that you should have gotten an aluminum 6.0 is an idiot for thinking those are just laying around and readily available in junkyards everywhere lol

I'll be pulling the same engine out of my wife's old 06 Denali this spring. Frame rails are gone. I'll be replacing my boat's vortex 350 with the lh6.

I am super stoked to see how this pans out. 110lbs is a lot of weight which should increase fun level, but I hope it revs higher too!

The content has dried up lately 😮 posts r few and far between now , keep grinding guys 👍👊👊👊👊👊

Ls-1 has 241 heads. 243 heads were on the Z06 motors I believe

Great video ! 100 lbs is a huge weight savings when it comes to something like a jetski... not so much for top speed, but acceleration and handling. I'm sure you will be adding 50lbs of that back on with turbo stuff, haha, but that's really exciting. I'm guessing that the aluminum block also cools a lot better.... Cast iron is not great at getting rid of heat, so managing temps may be easier.... tho I'm guessing it wasn't really a problem. Anyway, it was great to see an update and see what you guys are up to. I saw that you were switching your merch over... I hope it works out.

Grate finally going with a TURBO. Now need to go up on RPM 8000 or more and you see does miles reaching your goal

Love the channel and the v8 ski. Thought you might have been going to a 4 valve/cylinder V8. Good luck with the 5.3!

I love how unimpressed Milo is while he casually crunches on his snacks! Hahahaha Nice score on the engine! I tried to zoom in on the vin sticker in the door jam and after trying to enhance the image it looked like the 8th digit on the vin was a letter M which means you scored a 2005 LH6 5.3 which is the gen. 4 5.3. It has a 9.9:1 compression ratio compared to the previous 9.5:1, improved heads, improved ignition system, and a higher capacity oil pump amongst many other improvements over the gen. 3 motors. Saving 100 pounds of weight is definitely going to improve the feel of the ski! I’m excited for this new build guys! My only concern is, I believe this engine has the displacement on demand system with the lifter solenoids in the valley under the intake. There is a lot of info online for how to eliminate that system. Other than that and the work involved to make a single turbo setup will be so much fun to watch! I’m so pumped and can’t wait to follow along with you guys! Merry Christmas and happy New Year by the way! Edit: Sorry boys! I made my comment before I saw the part of the video where you mentioned pretty much everything I just typed in this comment lol sorry guys I’ll finish watching before I comment. I just got excited 😆

I did a little gearbox research. I think you only have to fill your gearbox to the center of the bottom gear. The gears turning will do the rest. Also a double wall water cooled cover would be nice. The stroke on the 4.8 is short enough you could actually run it without one if you could get it to hook up. Ideally a 6.2l aluminum block with the 4.8 crankshaft for 5.5 l direct drive that could Turn 8500 rpm:). Anyway, looking forwards to the next iteration.

I'm excited for this new build

You need to find an impeller that will let you take advantage of the extra torque. Prop up mang

Good job boys. I always love seeing a new video from you gentlemen.

I'd love to buy one of these things! They sound SO AWESOME!

You are Gosh Damned right cause i'm planning on pullinh my 2005 Vin Code Z ALL ALUMINUM BLOCK 5.3L Out and stuffing it into a 2001 Waverunner 1200 XLT!!!?? I just need that custom trans by JSB!!!!

Ace as per usual! Keep up the great content. Ally 5.3 LS the world......

I’ve had a 5.3 before in a 2008 Silverado with 315 hp. I know of some guys that have swapped the 5.3 into 80’s Camaros and Trans Ams and slapped on turbos. I can’t wait to see how this one turns out!

I can’t believe no one will send you a crate performance motor for the free advertisement. Summit or jegs or?

The only redeeming quality of the Trailblaze/Denali was the 5.3. A quick dyno tune and few intake and exhaust mods and they were good for 325 hp at the tires. Making up a new vocabulary of 4 letter words is a given evetime the hood opened up on one of these engineering failures.

Looking forward to seeing the results when the weather warms up for you!

The Chevy 98 -99 Silverado 4.3 with twin turbos boost it to 26 psi and hold onto your nuts.

Good job guys....weres the 5.7..oh 4 grand yea there cheaper here

Good job man. Y’all kick ass. Can’t wait to see the new build

Oh heck yes... I missed you guys so much ! The airplane flying over and the cuts made it sound like music was starting, haha.

If you leave it NA, on the scales it's over 100 lbs lighter. An aluminum block is the desired unit in a small hull like that. Cool build!

I know I'm late to the party, but why not find an aluminum 6 liter? Or newer 6.2? Curious not talking shit

I can tell you guys don't work on vehicles often because GM, especially trucks and SUVs are the absolute easiest vehicles made to work on. Go climb under a Ford and see how you like that engineered goodness. One thing about going fast on water. Each mile per hour is hard fought and every pound saved is well worth it. Y'all are heading in the right direction. Anyone wanting to really go fast would toss the pump and have a chopper sticking out the back. Then the hull will be way over powered.

Is the fan bolted on to the water pump

12:07 was the greatest impression of KZfaq keyboard warriors.

That oil pan is worth selling, don't scrap it

You’re gonna have to deal with the dod system.

A bit of boost and you will be on your way, love the channel and keep it up mate cheers 🇦🇺👍🎉

Thats a L33, great motors. Come with a bit more power than the LM iron blocks

its like when i had to pull my dads 4.7 out of his 2001 jeep wj for rebuild, it was horse shoed in there, i swear some engines should never be put in some vehicles!!!!!

Good score, should have the high compression pistons as well.

How much was the engine?

....if ya want views, build a lil tuner honda engine to make big power and rev to the moon ! im a sbc guy, but the new crowd likes tuners

Damn where ya been?

Kenny’s u pull

Pulling a V8 at the wrecking yard with your brother seems like a pretty good day.

A plus from going from 6L to 5.3 higher rpm for the jet pump

I would totally buy a spare engine to swap it into a junk mustang

Tell us how you really feel about that Denali. 😂😂

Great episode guys, Milo was very quiet, but he really liked working on his engine in the background, just like his dad. I really liked the junk yard footage, hope your back is ok from all that pulling, lifting and dragging.

Lh6 is a fantastic motor. gen 4 motor with a 24x crank wheel. Its essentially the same as an lc9 which holds the stock bottom end ls record in the race car world, I have one with stock bottom end making 1000 hp with a turbo. Much stronger and more advanced than an ls1 I actually sold my ls1 to get an lh6, good find! I am astounded as to how to clean that motor is, I wish mine was that clean! lol

Super interested to see if the difference in weight offsets the smaller displacement engine. I love this saga..

Myślę że lepszym rozwiązaniem jest 2jz do yamaha

I need a high quality union made american made Beenie!!!!!

Just wondering is your Toyota the T-100 or a tundra v-8 or v-6,I have the first year tundra and is very similar to T-100,thanx.......

machine head think outside of the CNC!!!!!!!

You Dear Sirs Do Not Have A 2005 flex fuel LS 5.3L enginein your hands!

noooooooo!? not ur own beast!

She might mean less hp but shes lighter than heavy weight 6.0l cast iron!!! machine head! think youre better than the rest walk from your machine!

5.3 better for what you are doing.