Burken01

iTrader: (88)

I've been debating between ls9 head gasket vs ls2 head gaskets for my turbo 347 build...

I've hit up a couple sponsors and they say the GM
Mls would work fine...

Anyone here running ls9 gaskets with experience?

I'll have the engine on a stand so I just want to make sure I go the best route..

Opinions?

FastKat

iTrader: (10)

The 5.7L LS1 gaskets had a great reputation and still do have a great reputation... plus they're cheap. If it ain't broke, why fix it?

With that being said, a lot of people seem to be using the LS9 gasket. It does have more layers FWIW.

FasTimeSS

iTrader: (47)

ls9 plus cooper spray does the trick always

Burken01

iTrader: (88)

yeah Ill most likely be running the ls9 gaskets..

I guess right now my last concern for this engine is Im still on stock main caps/bolts for my ls6...

Can you add ARP main studs while the engine is on a stand and just bolt on and go? Im kinda broke at the moment and dont wanna take my engine to get maching work

The Alchemist

iTrader: (19)

ARP main studs would require having the mains sized correctly. Remember, the mains determine oil pressure and flow, so it's not something to mess with.

Burken01

iTrader: (88)

Well what are your thought on the stock main and stock bolts?

The Alchemist

iTrader: (19)

If you're running stock pistons/rods, then they are the weak link before the mains or main bolts, at least that's what I've been told.

Burken01

iTrader: (88)

they are eagle rods w/ARP 2000 rod bolts, Diamond pistons, stock crank, stock main caps and bolts..

Im guessing thats the weak link in this bottom end, I dont want to get into any cap walk... I've looked into girdles but there seems to be a problem running steel girdles on aluminum engines with too much flexing going on.