87LSX10

5.3 block 383cu.in
3.905" bore
4" stroke
317 heads
ARP head and main studs
LS9 gaskets
ls1 intake and throttle body
th400
spec'd cam

s480 96mm/1.32
truck manifolds
divided 2 1/4" crossover

e85
Megasquirt with MS3X board.

Looking for tips to make this thing last under boost and how to keep the heads sealed. Don't really want to mess with o-ring block. Its a semi budget build. looking to make as much power as I can and keep it together. Would it create less cylinder pressure and be better for sealing if I turn say 7000-8000rpm? Is this reliable with my setup. I pushed my stock londblock LS1 to 6900 on the bottle without any issues. the motor will only be on 8-10psi 75% of the time. Would hope for around 1000whp around 20psi. Is this doable?

Blackpanther99

iTrader: (8)

In for build! I can see this build going far

DEFYANT

The only other things you could do are Copper spray the HGs, amd add 1/2" Head Studs.

5.3-on-steroids

iTrader: (3)

Use the ARP custom age 625+ head studs and LS9 gaskets, resurface heads. Expensive but worth it.

87LSX10

Wouldn't turning more RPM relieve cylinder pressure and reduce the chances of lifting the head?

allout06

iTrader: (11)

I see a lot of guys on here running your normal head stud and ls9 head gaskets without any issues. Im running ls9's and AES ported 317 heads with ARP head studs and plan on making 22psi.

p8ntslinger676

what crank and rods are you going to run?

Vetal

iTrader: (3)

I'd say so, because you are making some part of power by higher rpm rather than higher cylinder pressures

68 SS

iTrader: (23)

You need to look at peak torque that is where your head gasket failures happen. In the grand scheme of things you would pull timing until you are past that threshold then add timing back in above it if it likes it.