just what is says, has anyone sonic tested one yet to find this info?

 

From what I have heard it is .010" just for some cleanup.

Nate

 

anyone have some solid #'s?

 

It will be around the ten thousandths that was listed, it's a sleeved motor just like the aluminum ls1 which doesn't allow for boring over much at all unlike an iron block.

 

Any idea when Darton is gonna come out with sleeves for this bad boy??

 

One builder from CF is going to attempt .060 over. He had his block sonic checked.

 

hmmm, interesting. They must be using a much beefier sleeve.......or that guy is crazy

 

Did he give any indication to whether or not it would be safe to go with a .060?

 

Hmmm, I'm going to bet he's going to go through the sleeve. Didn't SDPC sonic test one of their original blocks and found that they couldn't tell the difference between sleeves and the block? Therefore it would appear to go .060 over but that would actually be the block not the sleeve.

 

I am almost positive Darton is working on fitting there sleeves to this block. No difference in this and the LS6 though same bore space so you will not get more than 4.160" bore.

Nate

 

So essentially with a sleeved LS2 block you could build a 427 LS2?

 

What would the differences be for a LS2 sleeve versus a LS1/LS6 sleeve? Isn't the block identicle except for some oil passages and bosses in the valley area? I would expect the sleeves that are currently available for the LS1/LS6 to work.

Todd

 

what is the difference other then the bore of the LS1 and LS2. arent the sleeve bores the same size. i would think the sleevs would fit both.

 

Just wait til GM is selling 7.0 blocks
Next yr u will be able to buy a 427 LS2 shortblock for 4500 complete with good internals.

Darton and the C5R blocks better drop cause no one is gonna pay 3 to 6 k just for an empty block.

 

I have not cut open an LS2 block to see if the current Darton MID sleeves will work or not. We are looking for a warrantee block for this purpose.

Darton is coming out shortly with a new sleeve that will safely go to 4.200" bore. The blanks for these sleeves should be in stock within a couple of months.

I don't think the new LS7 short block will sell for $4,500. The titanium connecting rods alone will run close to that price from GM.

Steve

 

No way you will touch a GM 427 short for 4500 next year.
Maybe in 5 or 6 years when the LS3/LS8 comes out

 

I agree. I wouldn't be suprised if you need to be a Race Team or ZO6 owner to buy one. Seeing that these are hand-built, blueprinted engine, I can't see GM building "extras" for crate motors and if they did they would be well out of the price reach of regular enthusiasts.

 

What makes you say that, if they can sell a complete 402 shortblock for $3,500 then they can sell a 427 for $4,500. The price of the bare LS7 block is not gonna be close to the price of a C5R block

 

It would be a block built by SDPC . It might not have the same interals with the exotic parts but it will be a forged 427 so who cares.We will see who's right in a year.What makes you think 25 more cubic inches is gonna be so expensive.Only 25

 

It's not the extra cubes, but the exotic internals and the fact each and every engine is hand built specially trained builders. If the Z06 is priced in the $65K range, availability will be way out there. I'm sure GM will offer the bare block, which be a whole different story.