LSX 454 and boost?
Thread Starter
Launching!
Joined: Jan 2010
Posts: 226
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Had no idea your location, but either way have fun and good luck on your build. I could really care less about who wins a race, especially a street race from a roll. I certainly know what NA cars can do as I know plenty of guys that have bested FI setups with their NA C6Z's.
Perhaps... I don't think junkyards over there have as many 5.3's laying around as ours do.
Perhaps... I don't think junkyards over there have as many 5.3's laying around as ours do.
I wouldn't run much boost on a 4.185" bore LSX block.
Although with a 6-bolt head it probably withstands boost a little better than a Darton dry sleeve @ 4.185 would.
I think LSX is usually limited to 4.155" bore for boost or nitrous and Darton says the same thing about the dry sleeve. And really it comes down to not enough material for head sealing.
However, moving to a Cometic MLX gasket @ 4.190" and using the 6-bolt head and ARP head studs, I think a 150 shot of nitrous might be okay...
Although with a 6-bolt head it probably withstands boost a little better than a Darton dry sleeve @ 4.185 would.
I think LSX is usually limited to 4.155" bore for boost or nitrous and Darton says the same thing about the dry sleeve. And really it comes down to not enough material for head sealing.
However, moving to a Cometic MLX gasket @ 4.190" and using the 6-bolt head and ARP head studs, I think a 150 shot of nitrous might be okay...
