FATTQ

Hi guys and girls.

My old man is building a twin turbo 427 GM performance LSX motor for our ( monaro ) your ( GTO ).

The question is we want to build it for about 20psi max boost.

Should we get it O-ringed just to be safe or do we just use cometic MLS steel shim type head gaskets?

Engine parts so far.

GMPP LSX Block
GMPP LSX Heads ( 65cc chambers )
Dragon slayer crank
wiseco pistons.( dummied up at .020 down the bore)
FULL ARP STUDS in all holes top and bottom lol.........

SO SHOULD WE O/RING OR NOT O/RING????????????????
For thos that have boosted one of these things ? have you had any problems so far?

Any help would be great what are your thoughts??????


Thanks in advance regards Paul cheers

03supercobra

iTrader: (38)

What size turbo or blower are you guys looking to run?

MUSTANGBRKR02

iTrader: (91)

If it is out and apart then you can't go wrong with overbuilding it.

93formto98T/A

iTrader: (28)

Go O-ring. You say max 20psi now but in a few month you'll be saying more. My policy is: always build your drivetrain to take 1.5-2X the power originally plan on. I've been through several of my own FI builds and those are my words of wisdom.

Daryn

iTrader: (19)

o-ring

98Z28CobraKiller

iTrader: (17)

Not necessary.

JAX04

iTrader: (17)

what does it cost to o-ring a block and heads anyways??

FATTQ

Will be using twin GARRET GT3076R turbos Her is a link to the kit.

http://www.aseturbo.com/HOLDEN/VT-VZ...0/prod_95.html

also using a fast 102 mm intake manifold and throttle body

IWGF

iTrader: (6)

Might as well Oring it and say eff the 102 and do a victor/vic jr or sheetmetal intake...

RS_SS69

iTrader: (31)

I believe VA Speed does o-ringing starting at $1000 including the double copper head gaskets.

10sec_rx7

mate ive made 460rwkw on bog stock engines with that kit and run into the 10's in 100% street cars.. you dont need orings with that setup..

Johnv

That kit may be a bit on the small side for a 427 ci engine.

at least get them to upsize the exhaust housing ARs on those turbos or you'll be chocking / falling over at the top end.

And while your at it get a bigger intercooler 600x300x100.

Muilti layer steel gaskets should be fine.

cracker

iTrader: (1)

Those turbos are WAY too small.

WAAAAY