I see that hte LS1s are sleeved commonly to make the 427... I was wondering if any of the engine builders have done this for the LT1 already.

I know there is a guy that sleeved it.. so I was wondering about this...

Take care.

 

I didn't even think there was enough room to even pull that off. If so I sure would like to know how it was done.

Didn't Mark Mantalvo get a bore to 4.1" without sleeving?

 

Sure, you can sleeve an iron block too. Don't know anyone who's sleeved a LT1 though.

-Mindgame

 

You need to do a "search" right here on Advanced Tech..... seems like about 3-4 months ago there was a thread on large cube LT1's, and there was a guy who posted with a sleeved 427ci LT1.

 

Did that... and I saw that thread.. and I saw all the reference posts.. what I was wondering is if anyone is actually doing it or had actually done it. I ahve a block at home that could be used for those purposes.

 

I would never spend that kind of $$$ on a stock block.

Rich Krause

 

Ditto.

 

http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW

The foundation for that proverbial Brick $hit House.



-Mindgame

 

that is really nice.. question.. is that one peice rear main seal???

Can i still use my heads with it???

the tall style will make a nice 427 with good rod to stroke ration... being full aluminum there isn't much need to the retro cooling or such...

WOA>. woult the t56 bolt right up to that?

I noticed it uses a different water pump.. can everything else be adapted? opti? etc?

 

Rich

 

I think rich will be the winner on that one

anyways.. I remember asking you rich a long time ago about adapting this block and your reply was to buy an iron one because it was cheaper yada yada yada... you see.. Al!!!jeje...

In all honesty i think if i do a 7L it would be on an ls1.

 

How much are we talking about here? Let's say somebody picked up a seasoned LT1 block for cheap or pulled one out a 150k mile car and had access to pretty much any kind of engine building related machines needed. The only extra price for doing this then would be the cost of sleeves.

What does a good aftermarket block (that still needs some machine work) run these days? Surely more than a set of sleeves

While we're on the subject, who are some companies that offer cylinder sleeves for a SBC?

 

disassemble block
clean
inspect (including taking multiple measurements)
pressure test
re-tap bolt holes
deburr
purchase main caps
machine for and install main caps
align bore and hone mains
clearance for stroke
deck block
machine for sleeves
purchase and install sleeves
bore and hone sleeves
index lifter bores
paint

Figure $2,500-3,000 and it's still a stock block which is not as strong or as durable as a Bowtie or aftermarket piece.

Rich

 

All true, but, if you wanted a large bore LT1, you don't have any other choice.
As far as I know, there are no "high performance after market LT1 blocks".
You may not care if it's an "old" SBC or an LT1 but some people might.

 

Yeah, but that's my point. It seems illogical to spend a fortune (in time and/or money) to build up a block that has so many limitations in the first place. The biggest limitation being the heads. If you start talking about adapting an 18 or 15 degree gen I head to an LT1, it becomes even less logical. The costs are as much or more and it's not as good. So what's the advantage to sticking with an LT1 if you plan something as wild as a427ci small block?

Now, AdioSS has made a somewhat different point. He asks a "what if" that assumes you can do all the work yourself. In that case, it makes some sense as a "just because" project if you are bored and have nothing better to do. But otherwise, it just doesn't seem logical (to me).

Rich