TRYMYZ

iTrader: (2)

What is the max bore size for a stock 2001 LS1 block ?

ForceFed HP

3.905

jrp

iTrader: (16)

w/o resleaving your pretty much limited to a hone and clean up.

JS

iTrader: (4)

I believe max is .010 but most go .005.....

maxpit

iTrader: (2)

Stock bore is 3.898. 2001-2003 LS1/LS6 can be bored 0.010... 97-00 can be honed 0.0040... Does this help?

PREDATOR-Z

3.910

KONG

iTrader: (4)

You looking for more cubes or something?? Just curious...

merriman44

iTrader: (4)

not a good way to add cubes...

1BADAIR

iTrader: (1)

most only go to 3.905 but I have seen a few turbo cars run 3.908 with no issues.
Mine may have to use 3.908 also. gonna find out this week. Gonna install new rings. Hoping I can just flex hone it and not need new pistons

Ryan'sSS

iTrader: (15)

3.908 on a 00 block here.

Gordon0652

iTrader: (4)

I wouldnt even bore it because if you are looking for cubes look into other blocks like LS2, L92, LQ9, LS7, LSX, Warhawk, ect.
The only reason to bore the LS1 block is when you want to go Forged pistons. I also think the only forged pistons that fit the factory bore are wesico pistons.

Gordon0652

iTrader: (4)

You can get the LS1 block sleaved by Darton. Then i think you can have a bore of 4.125? Someone correct me if i am wrong.

What are you looking to do? For what app.?

Daz

iTrader: (18)

I know its been a little over a month since the last post but....So basically I can't use stock LS2 pistons on a LS1 block ? Sorry ! I'm a little new to LS engines.

1BADAIR

iTrader: (1)

no, they won't fit

Daz

iTrader: (18)

Thanks for the info !

RedsrtAk

iTrader: (9)

thats a sick sig BadAir

SuperZ

iTrader: (2)

I ran 3.905 on a old boosted motor for over 2 years.

Steve - Race Eng

iTrader: (1)

Darton MID liners for the LS1 have two part numbers for two size ranges.
600-120 range is 4.125" to 4.160" bore
600-140 range is 4.170" to 4.200" bore

Many are now building 454" engines of 4.185" bore and 4.125" stroke using either the LS1 MID or LS2 with dry Darton Seal Tite liners. All Darton LS sleeves are 5.800" long ensuring adequate piston support for strokers.

Steve

beastmode

iTrader: (52)

I know this is an old thread but I figure better to dig up an oldie than start a newbie.
I have a 2000 LS1 that needs bored due to some scuffs, the guy said .010 would get the job done so is it safe to go with 3.908 or is that to much?

TIA

Bill

Daz

iTrader: (18)

From what I now understand is that is the max safe bore ! That's what I'm going to do ! 3.905 Bore, 4" crank, and 6.125 rods will give you a 383-LS1 . With good flowing heads(243's or 317's for the CP) and a beefy cam will get me 450+whp or close to it.