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how much boost?

Old Nov 14, 2006 | 09:14 AM
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Default how much boost?

How much boost can a stock 6.0l take?
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Old Nov 14, 2006 | 09:30 AM
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I'd say 15-18 on race fuel and 12-15 on pump gas. LQ4 that is. Subtract about 3 for an LQ9.
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Old Nov 14, 2006 | 09:44 AM
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What motor is in the sivlerado SS?
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Old Nov 14, 2006 | 12:23 PM
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LQ9 is the engine they come with.
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Old Nov 14, 2006 | 12:34 PM
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Dang!!! I have a lot of room to grow
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Old Nov 14, 2006 | 02:06 PM
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So the LQ9 can handle less boost because of its lower compression ratio?
What is the power output difference for a LQ4 vs LQ9 of the same year, if there is such a senario.
Not too up on the 6.0l years and specs.
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Old Nov 14, 2006 | 02:10 PM
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Originally Posted by TG02Z71
So the LQ9 can handle less boost because of its lower compression ratio?
What is the power output difference for a LQ4 vs LQ9 of the same year, if there is such a senario.
Not too up on the 6.0l years and specs.
Yes, but the LQ9 has higher cr. But bigger rods.
I'll let you know how much boost a LQ4 will take this weekend (IF I have enough fuel that is.....
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Old Nov 14, 2006 | 02:13 PM
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Originally Posted by TG02Z71
So the LQ9 can handle less boost because of its lower compression ratio?
What is the power output difference for a LQ4 vs LQ9 of the same year, if there is such a senario.
Not too up on the 6.0l years and specs.

Its somewhere around 45 more claimed pony's on a lq9. lq4's are cheap and they love that special muffler you got. Lag my A$$, I can torch em from a dig. No need to stall it. Just mash and spin
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Old Nov 14, 2006 | 02:16 PM
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lq4=315 or lq4 van motor=300
lq9=345
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Old Nov 14, 2006 | 02:49 PM
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Originally Posted by Wilde Racing
I'll let you know how much boost a LQ4 will take this weekend (IF I have enough fuel that is.....
Go get 'em!

So does anyone know why the LQ4 can take more boost than the 5.3? I mean don't they both have dished hyperutectic pistons?
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