hi , can i make ls1 block to 427ci by changing the block sleeves ? anybody here make it ?

 

i posed a similar question a couple weeks ago, i had wanted to make my ls1 400+ci, but the responses i got said that the stock block and sleeves can only be bored and stroked to 383, but you can resleeve your block to get your desired displacement. but they said that it is very pricey and a hassle and sometimes problems can arise from it. i was told it would be cheaper to either get a 6.0L iron block, or an ls2 block

 

no i did't mean with the stock LS1 5.7 seelves , i meant aftermarket sleeves , we have here one shop said he can install block sleeves that we can run 427 stroker in a LS1 , so all what i need i want to be sure , is that true he can make it ? and it's safe for N/A application and high CR.

 

yes it can be done with a sleeve kit..

 

well thanks !!

 

i forget to ask this question , if i installed sleeve kit , i'll be safe ? no pbroblems ?

 

someone told me that it would be pretty expensive to resleeve. if you do end up resleeving the block, lemme know how it turns out, i've been considering doing that sometime down the road

 

Very expensive to resleeve and you will get mixed results. Mine was resleeved in Germany to a 4.125" bore using Volvo Diesel engine sleeves. They always seeped a little water into the oil. A few machine shops recommended I use Moroso Ceramic engine seal but I never got around to it. By the time you get it resleeved you could have almost bought a new LSX block.

 

call me stubborn, but i always liked the idea of keeping my car as organic as possible, ie ls1 in f body

 

I hear you on being stubborn. I have the same issue. The problem is that stubborn is an expensive trait when it comes to cars.

 

Mohammed
Here are your options:

1.get Ls7 Block.
2.Get L92 or LS3 Block And With 4.07 Bore x4.1 Stroke =427ci (I wouldn't use N2O or Forced Induction)
3.Get Lsx short Deck block and get safely to 454ci.
4.Get Warhawk block.
5.Get ERL block.
6.Get C5R Block
7.Get DART Block (WAY expensive)
8.Resleve your block but find some one who knows what he is doing to Resleve it for you.

Abdullah

 

why wouldnt you use no2 or fi with the l92/ls3 427?

 

especially ls1 f-bodies ie. rearends

 

get someone reputable to resleeve with darton sleeves and you wont have a problem.

 

+ 1 for the darton sleeves and good to go

 

+2 for the darton sleeves then do a 4" crank ls7 stock style replacement forged pistons and use ls7 stock ti rods for the light weight build

 

The LS1 block is a very good candidate for Darton MID sleeves. There are two versions available, 4.125" to 4.160" and 4.175" to 4.200" bore. All Darton liners are now 5.800" long.

I am one of the patent holders of the MID sleeve and have done dozens of MID installations in the LS blocks, close to a thousand MID installs in all makes of blocks. I have two LS1 blocks here now lined up to do shortly.

Expense is relative. The sleeves and machining process is not cheap but the end product is very reliable if done correctly. There is no chance of the sleeves sinking or cracking as with some of the other options.

The dry sleeved LS2 is more cost effective for normally aspirated applications if you already have a block or can find an inexpensive used one.

Steve

 

so how much to sleeve a LS2 block? i want to go 427 also

 

yeah everyone says expensive, but how much is it?

 

The one I have cost $1800 to complete.