BadMedicine87

Looking for advice on head gaskets. I have an 2003 lq9 with tick performance stage 2v2 cam and all the obvious upgrades to work with a larger cam, once tuned and ready to run it should be around 500 to 550 horsepower.I'm going to run it on motor for a year or so and then boost it, just looking for advice on a head gasket that might work well for both setups or the head gasket that will work well for all motor. Thanks!

conan

iTrader: (5)

LS9 gaskets with ARP studs if your going forced induction.

BadMedicine87

Eventually it will be boosted, will the ls9 gaskets work well with a n/a motor also?

conan

iTrader: (5)

What Heads and combustion chamber size ? Stock LQ9 bottom end ?

BadMedicine87

Stock bottom end, 317 heads, not sure what size combustion chamber...should be what comes stock on them, i think 71cc?

conan

iTrader: (5)

317 have a 71cc combustion chamber. You would end up with a 9.91:1 compression ratio with LS9 gaskets.

4.00 Bore
3.62 Stroke
71cc Head combustion chamber
0 Dome or dish... LQ9 has flat top piston
.051 Head gasket thickness on LS9's
4.10 Head gasket bore on LS9's
.008 deck hight.

http://www.wallaceracing.com/cr_test2.php

So you can run the LS9 gaskets on your motor with out dropping the compression much at all. Stock LQ9 compression is 10:1. If you don't think forced induction will happen I would go with a .040 cometic and bump the compression up a bit.

BadMedicine87

Ok, thanks for the info and your time!

JRENIGAR

iTrader: (37)

Did you mean to say "Tick Performance LS2 Stage 2 blower cam"?