SatisTraction

iTrader: (2)

I have searched for HOURS and it is a mess. I have a 99 ls1 engine that i am putting some west coast racing ported 241's on. what head gasket do i need? I ahve been looking at the GM MLS gaskets but they are listed for 2002-2004. what is the difference? and what part do i need for my car?
thanks
chris

1Bad00SS

iTrader: (2)

I believe the 241's came on the 01-02's, but my set of 241's came off an 02 ss. So I'd assume you'd need the 2002-2004 gasket.

ssheets

iTrader: (1)

I was looking at https://ls1tech.com/forums/advanced-engineering-tech/111207-ls1-head-combustion-chamber-cc-volume-vs-cr.html and it brought back a memory. Can the grpahit gaskest be used on all LS1s for better quinch (provided P to V is good)?

Are the graphite gaskets still available from GM?

What are the part numbers for the two styles of head gaskets?

sroach20

iTrader: (31)

02 and newer are thicker gaskets. .056 for early and .06 for 02+.

Beast96Z

iTrader: (21)

You can use which ever gasket you want providing you don't have a 98' block with the infamous "notch". Use the graphite if you want a bit more compression, or the MLS if you want less.

SatisTraction

iTrader: (2)

i went with the MLS. they were cheaper and i was in a hurry
thanks