Generation IV Internal Engine - Sleeving an LSX block...?

Well 4 years ago when I started my build I decided to go with a with a 454ci build for max NA power.

4.185bore 4.125stroke

compstar rods/crank
wiesco pistons
LSX block

Now I desire a big turbo build, so aside from winging it and seeing how long the engine will last...

Is resleeving an LSX block an option, so I could drop down to a 4.125 bore...

Im gonna throw my short/long block in the classifieds, but if it doesn't sell, what can I do...?

Anyone used hardblok in an application like this?

http://www.summitracing.com/parts/HNH-860212/

Many people fill their blocks. Also, sleeving a block is nothing new. Back in the day when blocks weren't as plentiful as they are now, sleeving was very common. I can't tell you how many SBC's I've pulled out of junk yards that have sleeves in them.

Call erl see if they can do it for you.

Well I just called ERL, really nice guy, but he told me that they only do aluminum blocks.

Ive been reading that the iron in the LSX block is stronger than what is used in the iron truck blocks? Does anyone know anything about that?

Im going to put it in the classifieds, but if I cant sell it... I can't afford to let a $7k short block sit in the corner...

I'm still wondering why you are worried about an LSX block? I thought those blocks were good to 2k+ fwhp? Only thing I'd worry about is your CR and that is changeable with some different pistons. As long as you don't go crazy with the boost, you shouldn't have any issues. I mean theyy use the six bolt head pattern just for the boosted option. GM also put a lot of extra webbing in the block to make it more structurally sound. Just my .02 worth.

How much boost are you planning to run? The big reason to go with a smaller bore is for gasket space between the cylinders, but a reasonable amount of boost may be OK.
As said earlier, Std engine shops do std cast iron repair sleeves in cast iron blocks that would allow you to shrink the bore.

Yeah why are you really worrying about the current block? Even with that bore it should be good for a decent amount of boost. As long as you keep the compression low and set it up with good bottom end/hardware it's going to hold the power just fine.

Well, If you look at any of my previos threads there are 400 people telling me I will not make it out of the driveway if I boost it... (Which Im sure 90% are confusing my setup with that BS GM 454 LSX crate)

That being said, I started censoring my thoughts, as to limit the number of times I am mocked... but, I figured I would throw it up for sale and see it someone wanted it, but if it doesn't sell I'm going to go for it... and see how long she will last... I'm not sure how much boost I want to run, idk how you decide "enough is enough" but I figure Ill start around 7psi or so, and move up from there.. 15 psi would probably be the most I would ever need... this is just a street car, so 1300whp would keep me happy.



Also, I won't be changing pistons in this setup, I think Ill be fine with 11.5SCR and e85 for the boost Ill be running.

Don't know what your used to, but 1300 HP would be worthless on the street.

Don't know what your used to, but 1300 HP would be worthless on the street.

I am well aware of that.

Hi, My name is Trevor, Im a senior at Kettering University and in my free time I like building purposeless cars.

Clearly my WG will be earning its keep bringing boost down to a reasonable level, but its nice to know that the power is there...

Hey focus guys, he doesn't care if you think 1300hp is needed on the streets.

He wants to know if the 454 will hold up under boosted application. I talked to LMR about the LSX 454 (I had one) and they didn't suggest turbo/blower but they did say it should hold 300-400 hp of n20. Now that will develop more cylinder pressure but I'm not sure how it would relate to turbo/blower.

That being said they did suggest a 427 bore for big turbo/blower power.

You go to school at Kettering?! A good friend of mine Rudy when there, as well as my brother in law Neal and a friend of his and mine Ben. They all did a study abroad in Germany.

Thanks, and yea, I realize its not optimal, but if it could hold for "awhile" that would be pretty nice.

Yea, thats interesting that they suggested a 400shot of N20 but not boosting an extra 400hp... Im not sure I understand the difference...

and yes, if I rebuild, Im looking at doing a 4.125bore 4.1stroke

Yea, most of my money goes to Kettering, lets just hope I can find a good job next year so I can afford to continue this crazy hobby. Ive had a few opportunities to travel internationally for work, but I didnt get a chance to take classes overseas... that would have been a good time.

Try to sell it and start over.

Steve at RED told me he has sleeved many iron blocks.

Thats the ultimate in strength.....

.

Steve at RED told me he has sleeved many iron blocks.

Thats the ultimate in strength.....

.

I forgot about RED, ill give them a call tomorrow.


Thanks.

Why not just build it and see if you make your goals? I think if your motor is built right and your tune is dialed in you will be damn surprised at what it can hold.

Why not just build it and see if you make your goals? I think if your motor is built right and your tune is dialed in you will be damn surprised at what it can hold.

Well that is Plan B, if it doesn't sell, but the obvious reason is that it is a $15000 long block, that I can't afford to build again... if it blows up, the car will be on jackstands...

I'd sell the rotating assembly and go with a 4" crank/rotating assembly to make it a 440 CID. The pistons will be stronger with a 4" stroke. Then if you use 6 bolt heads, you'll be fine.

I hope you end up going twins if you go with a 440 or stay with the 454. Good luck spooling that beast with a huge single lol.

I really can't imagine it being that bad, a 106mm on a 454 is the same relative size as an 80mm on a 346...

I dont see a problem running that big of bore for a turbo application. As stated people go with 4.125-4.150 bore for sealing purposes. Ive done quite a few small block ford heads on applications using a 4.150-4.185 bore and big turbos with no problems.

I forgot about RED, ill give them a call tomorrow.


Thanks.

I'm dropping my block off tomorrow to have my builder start my forged iron 370ci for BOOST.

But I think in a year I'm going to talk to Steve again about sleeving an iron block. Then try to build something like NRE does......1800-2300 HP TT LSX 454. Just for the hell of it....:cool:

Hahahahaha.....

.

Just my opinion. Your going to push the cylinder walls away from the rings. Any oil consumption or detonation you better pull back the boost, quick. The block material is harder than OEM but there are limits. Why the desire to build 400+ inches? Let that engine rev and enjoy it. You'll kill the head gaskets between the cylinders for sure. Sleeves are a waist of $$ on this block.