escalader

in a bit of a pickle right now and need a new 6.0 for my caddy,i tend to see a lot of Lq4 6.0s in my area instead of the lq9. if i were to do the swap will it effect anything with my computer?

rileyjames

if you’re hunting for a block that can reliably support around 1400 hp, you’ll want to focus on forged, high‑strength architectures rather than stock cast blocks — because at that power level anything OEM tends to get stretched past its limits. In the LS/Gen III/IV world for example, strong choices are LSX iron blocks, LSX376 blocks, or aftermarket billet/enhanced iron cores from companies like Dart, RHS, World Products, or Blueprint. These blocks have thicker cylinder walls, better reinforcement around the main caps, and bolt‑in provisions for stronger rods and crank setups, which makes them capable of high boost or big nitrous with good longevity. Similar principles apply outside LS engines too — look for blocks with four‑bolt main caps, thick deck and cylinder walls, and compatibility with forged rotating gear.