Intake for LQ9
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Intake for LQ9 Guys I face the choice:
I have LQ9, 6.0 (Escalade 2002), I swap this engine
i want change intake manifold :
What way will be better:
1. Ls2 or LS6 intake
2. I have Ls3 heads, maybe install Ls3 heads with Ls3 intake ?
I have LQ9, 6.0 (Escalade 2002), I swap this engine
i want change intake manifold :
What way will be better:
1. Ls2 or LS6 intake
2. I have Ls3 heads, maybe install Ls3 heads with Ls3 intake ?
What are you building here? A street car, or race car? Tell us about your build.
Personally I like the LS3 top ends over cathedral ports, even for the street.
Definitely #2 - LS3 intake - this intake flows very well with LS3 heads 
#1 - LS2 intakes sadly under perform the LS6 in NA applications. The LS2 intake might be a source for a 90mm snout for an LS6 intake.
#1 - LS2 intakes sadly under perform the LS6 in NA applications. The LS2 intake might be a source for a 90mm snout for an LS6 intake.
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I build street car(swap lq9 in b body)
If I use my LS3 heads - What will be required replacements?
May I use component lq9(pushrods, lifters) with LS3 heads ?
I will only need to buy intake LS3 with throttle, fuel rump, injections
If I use my LS3 heads - What will be required replacements?
May I use component lq9(pushrods, lifters) with LS3 heads ?
I will only need to buy intake LS3 with throttle, fuel rump, injections
With the heads off the wings, I would get a new set of Ls7 lifters and LS2 lifter trays. They will worth with either type of cylinder head. It's best to measure for push rod length. Ideally, the stronger aftermarket ones are better than stock. The stiffer aftermarket push rods generally help with better valve train control because it flexes less.
WS6 Store is an outstanding sponsor and probably can give you a better idea of all the detailed parts and supply the parts. I would contact them. Mike is very helpful. Here are a few things...
The LS3 heads use an offset intake rocker arm and standard straight exhaust rocker arm. You can use your old rockers on exhaust but will need LS3 offset intake rockers. If your LS3 heads don't have the rocker stands you will need a pair of those.
LS3 intake, throttle body, fuel rail, a set of fuel injectors.
I think you will need an adapter kit to hook up the LS3 fuel injectors (EV6 style) to what I'm guessing is the LQ9's Vortec engine harness (EV1 style). These kits are like $40 or so.
If the original truck manifold had a drive by cable throttle body you will need a throttle bracket of some sort for their LS3 intake manifold.
WS6 Store is an outstanding sponsor and probably can give you a better idea of all the detailed parts and supply the parts. I would contact them. Mike is very helpful. Here are a few things...
The LS3 heads use an offset intake rocker arm and standard straight exhaust rocker arm. You can use your old rockers on exhaust but will need LS3 offset intake rockers. If your LS3 heads don't have the rocker stands you will need a pair of those.
LS3 intake, throttle body, fuel rail, a set of fuel injectors.
I think you will need an adapter kit to hook up the LS3 fuel injectors (EV6 style) to what I'm guessing is the LQ9's Vortec engine harness (EV1 style). These kits are like $40 or so.
If the original truck manifold had a drive by cable throttle body you will need a throttle bracket of some sort for their LS3 intake manifold.
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With the heads off the wings, I would get a new set of Ls7 lifters and LS2 lifter trays. They will worth with either type of cylinder head. It's best to measure for push rod length. Ideally, the stronger aftermarket ones are better than stock. The stiffer aftermarket push rods generally help with better valve train control because it flexes less.
WS6 Store is an outstanding sponsor and probably can give you a better idea of all the detailed parts and supply the parts. I would contact them. Mike is very helpful. Here are a few things...
The LS3 heads use an offset intake rocker arm and standard straight exhaust rocker arm. You can use your old rockers on exhaust but will need LS3 offset intake rockers. If your LS3 heads don't have the rocker stands you will need a pair of those.
LS3 intake, throttle body, fuel rail, a set of fuel injectors.
I think you will need an adapter kit to hook up the LS3 fuel injectors (EV6 style) to what I'm guessing is the LQ9's Vortec engine harness (EV1 style). These kits are like $40 or so.
If the original truck manifold had a drive by cable throttle body you will need a throttle bracket of some sort for their LS3 intake manifold.
WS6 Store is an outstanding sponsor and probably can give you a better idea of all the detailed parts and supply the parts. I would contact them. Mike is very helpful. Here are a few things...
The LS3 heads use an offset intake rocker arm and standard straight exhaust rocker arm. You can use your old rockers on exhaust but will need LS3 offset intake rockers. If your LS3 heads don't have the rocker stands you will need a pair of those.
LS3 intake, throttle body, fuel rail, a set of fuel injectors.
I think you will need an adapter kit to hook up the LS3 fuel injectors (EV6 style) to what I'm guessing is the LQ9's Vortec engine harness (EV1 style). These kits are like $40 or so.
If the original truck manifold had a drive by cable throttle body you will need a throttle bracket of some sort for their LS3 intake manifold.
thanks
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LQ9 has the LS1 cam. Without a cam change, you wont see much improvement over using an LS1 or truck intake.
Other consideration, The LQ9 has cathedral port heads, they will fit LS1, 2, 6 intake. Not LS3.
You have a 3 bolt DBW TB, that will fit the LS1, 6 intake.
If you're chasing dyno numbers use your LS3 heads, LS3 intake and 3 to 4 bolt TB adapter or see if you can reprogram the ecu for a 4 bolt TB.
Other consideration, The LQ9 has cathedral port heads, they will fit LS1, 2, 6 intake. Not LS3.
You have a 3 bolt DBW TB, that will fit the LS1, 6 intake.
If you're chasing dyno numbers use your LS3 heads, LS3 intake and 3 to 4 bolt TB adapter or see if you can reprogram the ecu for a 4 bolt TB.
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LQ9 has the LS1 cam. Without a cam change, you wont see much improvement over using an LS1 or truck intake.
Other consideration, The LQ9 has cathedral port heads, they will fit LS1, 2, 6 intake. Not LS3.
You have a 3 bolt DBW TB, that will fit the LS1, 6 intake.
If you're chasing dyno numbers use your LS3 heads, LS3 intake and 3 to 4 bolt TB adapter or see if you can reprogram the ecu for a 4 bolt TB.
Other consideration, The LQ9 has cathedral port heads, they will fit LS1, 2, 6 intake. Not LS3.
You have a 3 bolt DBW TB, that will fit the LS1, 6 intake.
If you're chasing dyno numbers use your LS3 heads, LS3 intake and 3 to 4 bolt TB adapter or see if you can reprogram the ecu for a 4 bolt TB.
If in additives to change a camshaft, what will be optimum for the everyday street car with good idle?
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Look at the torque curve between an LS1 and LS6. All of that increase is in the upper range.
With your LQ9, a mild tune, LS6 intake, and stock corvette or gto exhaust will put you over 400hp. Add a cam, that will give you more upper rpm hp. The rectangle port LS3 heads will give you even more, but probably in the rpm range you'll rarely see.
With your LQ9, a mild tune, LS6 intake, and stock corvette or gto exhaust will put you over 400hp. Add a cam, that will give you more upper rpm hp. The rectangle port LS3 heads will give you even more, but probably in the rpm range you'll rarely see.
Back in the early 2000s my neighbor had a mid 90s impala SS if my memory is right it was barley over 4,000 lbs?
iI has a 88 gta at the time that was 3750!!
I remember because I couldn’t believe his car wasn’t waaay heavier than mine
iI has a 88 gta at the time that was 3750!!
I remember because I couldn’t believe his car wasn’t waaay heavier than mine