FEF84

I am looking to stroke my motor out. How many cubes can you stroke it out too with out having to bore the thing out and how many cubes can you get if you bore it out.

Asmodeus

You can put a 4 inch stroke in an LS1.. giving you iirc 382 cubes with the 3.905 bore. You could go crazy and bore it all the way out and get like.. a 383 with 3.910 bore, but that's not recommended.

ROCNDAV

iTrader: (100)

Bryan @ Speed Inc.

iTrader: (19)

i would stick with a proven combo - 4.000" crank for 382".
my opinion.

PortPros1

The LS1 will go 3.905 bore, I wouldn't go any bigger unless you put sleeves in it. A 4.00 stroke is as far as I would go with a 3.905 bore. If you have questions give me a call advise is free.

Harold

Mike94ZLT1

iTrader: (3)

3.905 bore would be 383.25 inches with a 4" stroke.

FEF84

I am not exactly sure what sleeves are but if you sleeve it how big can it go? And why do you suggest not going bigger than a 4.00 on that bore?

Beaflag VonRathburg

iTrader: (176)

LS1 blocks can only be honed so far before you hit the water passages. 3.905 tends to be the accepted sizing of safety.

I'm pretty sure the new darton wet sleeves can go out to a 4.200 bore.

Mike94ZLT1

iTrader: (3)

Why bother with Darton sleeves? With as cheap as the LSX block is, I would think its a waste of time and money.

DONAIMIAN

iTrader: (18)

Not everybody likes the idea of an iron block.

99mongooSS

iTrader: (4)

with a 4.185'' stroke and a 3.908'' bore youre looking at about 400 cubes. thats almost th max stroke an ls1 will take I think. with the same stroke and resleeving process and a finished bore of 4.155'' MTI makes their 455cu.in. GTO package.

GTObsessor

iTrader: (2)

Commonly, without sleeving (like everyone else has said) a 382ci engine is possible by just lengthening the stroke. With resleeving the block, you can commonly go as high as 454/5ci although I've seen some slightly larger builds in the past - don't know specifics but it has been done on occasion. Not sure I could see much good reason to go above 454 except for the bragging rights. You can do A LOT with 454ci, even N/A.

FEF84

what would it cost to get it resleeved?

99mongooSS

iTrader: (4)

More than it would cost to get an lsx block or an ls7 block depending on whether you want alum. or iron. I was thinking of resleeving mine but to do it right its gonna cost around 2500-3000 dollars, the lsx block is only like $1800, and the ls7 block is about the same maybe a little less.

red_ryderSS

iTrader: (1)

Am I reading this correctly, if u simply throw a 4.000" stroke without boring it out, you will achieve 382ci.

Steve - Race Eng

iTrader: (1)

Darton does indeed have an MID sleeve for both the LS1 and LS2 LS7 blocks that will go to 4.200" bore. The LS7 dry liner suitable for LS2 and LS7 blocks will go to 4.190" bore normally aspirated.

All Darton sleeves are now 5.800" long to allow strokes to 4.250". At 4.200" bore and 4.250" stroke you end up with 471 cubic inches.

A lot of folks may not realize that the LSX block has short cylinder walls, not to mention they weigh twice what the aluminum block weighs.

The basic cost of dry sleeving either the LS2 or LS7 blocks is $1,550.

Steve

Gh0st

iTrader: (3)

What is involved in giving the engine a 4" stroke, just a new crankshaft? Anything else I have to mess with or buy?

COOKIE MONSTER

iTrader: (5)

Is there a performance difference?

The Black Mamba

I would say the max I would do is a 4.000" stroke. 383s are typically the biggest the normal person goes, but I have seen higher. Sleeving the block just isn't worth it IMO, you can get an LS2 block for MUCH cheaper than that.

LS7jUnKiE

iTrader: (5)

what kind of gain would you yield on a cam only car with roughly 400rwhp and 380rwtrq?
would it be feesible to throw in a 4.00inch crank?