Just bought ls6 intake!!!
04-21-2010, 06:47 PM
#21
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Yeah, this is the best method, that way you will not have to disconnect the fuel system and worry about dealing with the injectors. I used a small chisel and hammer to trim the tabs, there are other ways as well to trim these off, dremel, chisel, etc.
You'll need a cap plate for the EGR for now until you install some LT's. I know there are a few vendors who sell them or you can make something to cover the hole on the stock exhaust manifold. Most likely you will throw an SES, you'll just need to have that turned off via a tuner.
On install, you need some tape or cloths pins to hold up the back 4 screws of the manifold when removing. Also be careful about the connector in the back, you don't wanna break it. There are tons of threads on this install on here, do a search (i'm sure you probably already have) and you'll find step by step directions. Take your time with cause your SOL if you break the connector in the back, you'll need to buy a new one.
You'll need a cap plate for the EGR for now until you install some LT's. I know there are a few vendors who sell them or you can make something to cover the hole on the stock exhaust manifold. Most likely you will throw an SES, you'll just need to have that turned off via a tuner.
On install, you need some tape or cloths pins to hold up the back 4 screws of the manifold when removing. Also be careful about the connector in the back, you don't wanna break it. There are tons of threads on this install on here, do a search (i'm sure you probably already have) and you'll find step by step directions. Take your time with cause your SOL if you break the connector in the back, you'll need to buy a new one.
04-21-2010, 08:07 PM
#23
Guys,
Moving up in injector size doesnt do squat for power unless your lean because your current injector cant simply provide enough fuel.
And a GM 28 lb injector is easily capable of 450 RWHP with the right tune and a 12.8 - 13.0 A/F ratio.
I purposely pushed my measely 2000 vintage 22 lbers to 440 RWHP till I was finally out of fuel showing a 110% duty cycle (which is all theoretical numbers anyway).
If you use the new injectors....A....it wont make a stitch more power, and B....it would require a re-tune to calibrate the larger injector or you would lose power from the engine running on the rich side.
Install the intake with the old injectors and expect to feel minimal if any gains from the seat of your pants....you might see 5 RWHP at the wheels which is hard to feel unless you really know the car well. You could just about gain or lose that from a ten degree change in ambient air temps.
-Tony
Moving up in injector size doesnt do squat for power unless your lean because your current injector cant simply provide enough fuel.
And a GM 28 lb injector is easily capable of 450 RWHP with the right tune and a 12.8 - 13.0 A/F ratio.
I purposely pushed my measely 2000 vintage 22 lbers to 440 RWHP till I was finally out of fuel showing a 110% duty cycle (which is all theoretical numbers anyway).
If you use the new injectors....A....it wont make a stitch more power, and B....it would require a re-tune to calibrate the larger injector or you would lose power from the engine running on the rich side.
Install the intake with the old injectors and expect to feel minimal if any gains from the seat of your pants....you might see 5 RWHP at the wheels which is hard to feel unless you really know the car well. You could just about gain or lose that from a ten degree change in ambient air temps.
-Tony
04-21-2010, 09:14 PM
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make sure to lift the hose in the back of the intake that connects to the brake booster so you dont break the oil switch. i broke mine. so be careful feel for it first so you know wat you got to watch out for
04-21-2010, 09:28 PM
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Guys,
Moving up in injector size doesnt do squat for power unless your lean because your current injector cant simply provide enough fuel.
And a GM 28 lb injector is easily capable of 450 RWHP with the right tune and a 12.8 - 13.0 A/F ratio.
I purposely pushed my measely 2000 vintage 22 lbers to 440 RWHP till I was finally out of fuel showing a 110% duty cycle (which is all theoretical numbers anyway).
If you use the new injectors....A....it wont make a stitch more power, and B....it would require a re-tune to calibrate the larger injector or you would lose power from the engine running on the rich side.
Install the intake with the old injectors and expect to feel minimal if any gains from the seat of your pants....you might see 5 RWHP at the wheels which is hard to feel unless you really know the car well. You could just about gain or lose that from a ten degree change in ambient air temps.
-Tony
Moving up in injector size doesnt do squat for power unless your lean because your current injector cant simply provide enough fuel.
And a GM 28 lb injector is easily capable of 450 RWHP with the right tune and a 12.8 - 13.0 A/F ratio.
I purposely pushed my measely 2000 vintage 22 lbers to 440 RWHP till I was finally out of fuel showing a 110% duty cycle (which is all theoretical numbers anyway).
If you use the new injectors....A....it wont make a stitch more power, and B....it would require a re-tune to calibrate the larger injector or you would lose power from the engine running on the rich side.
Install the intake with the old injectors and expect to feel minimal if any gains from the seat of your pants....you might see 5 RWHP at the wheels which is hard to feel unless you really know the car well. You could just about gain or lose that from a ten degree change in ambient air temps.
-Tony
04-22-2010, 11:04 AM
#26
From an intake swap and gains from tweaking the tune maybe....
You dont even see those kinds of gains when a much higher flowing out of the box FAST is bolted on....and with stock heads the gains from an intake swap are even less.
If your thinking that your going to see that big a difference your in for a disappointment.
Do a search....guys swapping the LS6 intakes don't pick up 15 - 20 HP.....that would mean a FAST swap would be good for close to 30 without porting and 45 with porting because guys do routinely see 10-15 over an LS6 (unported) and usually 20-25 ported assuming good heads are on the engine (over an LS6 intake baseline).
A cleaned up LS6 (ported) might be worth 7-10....
Dyno your results before and after....it would be an interesting test and IMO a sobering one unless you knock your expectations down a notch or three.
-Tony
You dont even see those kinds of gains when a much higher flowing out of the box FAST is bolted on....and with stock heads the gains from an intake swap are even less.
If your thinking that your going to see that big a difference your in for a disappointment.
Do a search....guys swapping the LS6 intakes don't pick up 15 - 20 HP.....that would mean a FAST swap would be good for close to 30 without porting and 45 with porting because guys do routinely see 10-15 over an LS6 (unported) and usually 20-25 ported assuming good heads are on the engine (over an LS6 intake baseline).
A cleaned up LS6 (ported) might be worth 7-10....
Dyno your results before and after....it would be an interesting test and IMO a sobering one unless you knock your expectations down a notch or three.
-Tony
04-22-2010, 04:22 PM
#29
This is my experience from what IIRC, my best run was 12.2 @ 110 w/ LS6 IM/28 lb inj, not tuned and also dynoed 317.x rwhp/316 rwtq w/ stalled auto, full exhaust, lid, free mods, 3.42 rear and MT ET streets.
Prior to that, sans LS6 intake/28lb, my car would run consistantly 12.6s-12.8s @ 107. Take it FWIW.
And yes the weather/temp was relatively close as they were both in the fall season, cold and windy.
For the seat of the pants comment, I certainly felt it not big but I felt it specially on the top end and no it wasn't placebo effect because it showed at the track.
Prior to that, sans LS6 intake/28lb, my car would run consistantly 12.6s-12.8s @ 107. Take it FWIW.
And yes the weather/temp was relatively close as they were both in the fall season, cold and windy.
For the seat of the pants comment, I certainly felt it not big but I felt it specially on the top end and no it wasn't placebo effect because it showed at the track.
04-22-2010, 08:25 PM
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This is my experience from what IIRC, my best run was 12.2 @ 110 w/ LS6 IM/28 lb inj, not tuned and also dynoed 317.x rwhp/316 rwtq w/ stalled auto, full exhaust, lid, free mods, 3.42 rear and MT ET streets.
Prior to that, sans LS6 intake/28lb, my car would run consistantly 12.6s-12.8s @ 107. Take it FWIW.
And yes the weather/temp was relatively close as they were both in the fall season, cold and windy.
For the seat of the pants comment, I certainly felt it not big but I felt it specially on the top end and no it wasn't placebo effect because it showed at the track.
Prior to that, sans LS6 intake/28lb, my car would run consistantly 12.6s-12.8s @ 107. Take it FWIW.
And yes the weather/temp was relatively close as they were both in the fall season, cold and windy.
For the seat of the pants comment, I certainly felt it not big but I felt it specially on the top end and no it wasn't placebo effect because it showed at the track.
04-22-2010, 09:08 PM
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Yep Im getting it tuned before I even put the new intake on or egr off. I will be getting it tuned by pcmforless. They do great work I have gotten a cuple tunes from them before and have always had great results. With the tune im also getting all the little perfromance crap like the better shifts and higher rpm's and all that good stuff. The tuned my old hot camed 93 lt1 perfect
04-23-2010, 05:14 PM
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i have yet to install my ls6 intake....lol...I'm saving all my parts for one big build...do it all at once...I have heads/springs, ls2 timing chain, egr block off plates, ls6 intake...I still need to buy my cam, oil pump, injectors, gaskets/bolts.
my buddy will tune
my buddy will tune
04-24-2010, 12:14 AM
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i have yet to install my ls6 intake....lol...I'm saving all my parts for one big build...do it all at once...I have heads/springs, ls2 timing chain, egr block off plates, ls6 intake...I still need to buy my cam, oil pump, injectors, gaskets/bolts.
my buddy will tune
my buddy will tune
04-24-2010, 12:45 AM
#38
First of all, welcome to the board ... it's crazy to see somebody from Plains, KS on here. I've driven through many times on hwy. 54 on the way back and forth to home in CA.
Secondly, I think that Tony is being a little cynical here. Sure, the LS6 intake isn't going to give you gobs of power. I saw an average improvement of .05 at the track ... not dramatic, but indicative of an increase in horsepower. But where it really shines is throughout the rev band ... driveability is improved everywhere, as the flow characteristics of this intake are just all-around better suited to the motor than the standard LS1 intake.
28lb. injectors won't give you anything - except a little room to grow. I installed a set because my 26ers were getting above the standard 80% flow rate factor.
I whacked off the ribs on the bottom with a hammer and chisel; it was fun doing it, and it works perfectly.
I think you'll be happy with the swap - as I was and so many others have. Install and enjoy.
04-24-2010, 10:32 AM
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This is true. But let's restart this entire discussion.
First of all, welcome to the board ... it's crazy to see somebody from Plains, KS on here. I've driven through many times on hwy. 54 on the way back and forth to home in CA.
Secondly, I think that Tony is being a little cynical here. Sure, the LS6 intake isn't going to give you gobs of power. I saw an average improvement of .05 at the track ... not dramatic, but indicative of an increase in horsepower. But where it really shines is throughout the rev band ... driveability is improved everywhere, as the flow characteristics of this intake are just all-around better suited to the motor than the standard LS1 intake.
28lb. injectors won't give you anything - except a little room to grow. I installed a set because my 26ers were getting above the standard 80% flow rate factor.
I whacked off the ribs on the bottom with a hammer and chisel; it was fun doing it, and it works perfectly.
I think you'll be happy with the swap - as I was and so many others have. Install and enjoy.
First of all, welcome to the board ... it's crazy to see somebody from Plains, KS on here. I've driven through many times on hwy. 54 on the way back and forth to home in CA.
Secondly, I think that Tony is being a little cynical here. Sure, the LS6 intake isn't going to give you gobs of power. I saw an average improvement of .05 at the track ... not dramatic, but indicative of an increase in horsepower. But where it really shines is throughout the rev band ... driveability is improved everywhere, as the flow characteristics of this intake are just all-around better suited to the motor than the standard LS1 intake.
28lb. injectors won't give you anything - except a little room to grow. I installed a set because my 26ers were getting above the standard 80% flow rate factor.
I whacked off the ribs on the bottom with a hammer and chisel; it was fun doing it, and it works perfectly.
I think you'll be happy with the swap - as I was and so many others have. Install and enjoy.