LS4 Performance - Intake manifolds?

I know we can't use a Fast because of clearance issues with the power steering but what about the typhoon, bbk, professional products.... all the aluminum ones. Couldn't the back be modified the welded for clearance and then use after market fuel rails? I was just curious if any one tried them or if they would work.

thats what i mentioned in the LS1/LS6 sticky but im thinking since its already a remount mount PS tank that it would be to easy to relocate it and free up room and use a FAST or typhoon, Keeep in mind the TYPHOON and BBK etc are metal which will heat soak pretty bad on our cars IMO id stick with LS6 or a FAST 90 /92

thats what i mentioned in the LS1/LS6 sticky but im thinking since its already a remount mount PS tank that it would be to easy to relocate it and free up room and use a FAST or typhoon, Keeep in mind the TYPHOON and BBK etc are metal which will heat soak pretty bad on our cars IMO id stick with LS6 or a FAST 90 /92

I think the heat-soak issue is fallacy. The air spends such a short time in the intake, there's simply no time for it to measurably heat up. There are several threads here that document just that.

I'd have no issue swapping an composite intake for an aluminum unit if it increased flow.

As far as the other intakes that the OP mentioned, they would still require a modded valley cover and OPSU, as well PS and possibly alternator bracket mods.

Believe it or not, the easiest "fit" is a truck intake, which requires no OPSU mods and only some trimming of the alternator bracket. Problem is, the top of the intake needs to be modified to clear the hood, as well as the underside of the hood itself. You'd also need to adapt the LS4 throttle body to fit and figure out what fuel rails to use.

Look when anyone gets a new intake I want there LS4 intake so shoot me a price!!!

If I disable the DOD can't I use a differant valley cover or do I have swap out lifters and cam. And if that's the case I think I would like the aluminum better as I could take it to someone that has a mill and have te bottom taken down a bit. I am just wondering cause I would like to get all the stuff the do it all at once (intake and exhaust).

You have to get rid of DOD completely to get rid of the tray not just tune it out, so you are correct.

I don't think the bbk or typhoon flow much better than the ls6 intake. And a composite intake is way better. My buddies H/C gto with a fast 102, you are able to touch the intake 2 mins after the cars shut off. Other buddy with a H/C Camaro with a bbk, 30 mins later it's still pretty warm to the touch.

I think the heat-soak issue is fallacy. The air spends such a short time in the intake, there's simply no time for it to measurably heat up. There are several threads here that document just that.

I'd have no issue swapping an composite intake for an aluminum unit if it increased flow.

As far as the other intakes that the OP mentioned, they would still require a modded valley cover and OPSU, as well PS and possibly alternator bracket mods.

Believe it or not, the easiest "fit" is a truck intake, which requires no OPSU mods and only some trimming of the alternator bracket. Problem is, the top of the intake needs to be modified to clear the hood, as well as the underside of the hood itself. You'd also need to adapt the LS4 throttle body to fit and figure out what fuel rails to use.

I hear you but i think on a DD Heat soak is alot more applicable if were just 1/4 mile runs or dyno queen then sure but we all know cooler air to a certain extent is the way to go. The truck intake though is more tourqe oriented while being a easy up grade after shaving the top of it off, you still wouldnt outflow a ls1 intake. to me it seems that a fast 90 would be great relocating the PS resoivoir seems easy enough as its already a remote setup. BTW so if we were to get that katech tray that has a flat opsu we would be good to go right?

It seems like I keep repeating myself on here but...

http://ls1tech.com/forums/attachments/generation-iii-external-engine/154280d1226963797-new-edelbrock-lsx-intake-manifold-sema-claiming-much-more-power-than-fast-proxt-ls.jpg

I measured 9 1/2" from the valley cover to the hood insulation. With the LS2 version you could run a 90mm TB.

Of course nobody has done this so you'd better double check every before you try.

Oh and the Edelbrock would be backwards.

I hear you but i think on a DD Heat soak is alot more applicable if were just 1/4 mile runs or dyno queen then sure but we all know cooler air to a certain extent is the way to go. The truck intake though is more tourqe oriented while being a easy up grade after shaving the top of it off, you still wouldnt outflow a ls1 intake. to me it seems that a fast 90 would be great relocating the PS resoivoir seems easy enough as its already a remote setup. BTW so if we were to get that katech tray that has a flat opsu we would be good to go right?

Truck intake does outflow the LS1 intake across the entire powerband. Research it. The truck intake is also better than the LS6 up to about 4000 RPMs. The LS6 is better above that level, but people underestimate just how good the truck intakes are. The main problem with them is the fact that they need a lot of massaging to fit passenger cars.

Truck intake does outflow the LS1 intake across the entire powerband. Research it. The truck intake is also better than the LS6 up to about 4000 RPMs. The LS6 is better above that level, but people underestimate just how good the truck intakes are. The main problem with them is the fact that they need a lot of massaging to fit passenger cars.

You are indeed correct i started research lastnight and now if i can score a 06-09 4.8 5.3 6.0 truck intake which is the same as the TBSS one i will do that , i have experience already shaving the tops off these so that wont be a problem

You are indeed correct i started research lastnight and now if i can score a 06-09 4.8 5.3 6.0 truck intake which is the same as the TBSS one i will do that , i have experience already shaving the tops off these so that wont be a problem

It will hit the power steering pump.
http://ls1tech.com/forums/ls4-performance/1384690-another-intake-option.html

It will hit the power steering pump.
http://ls1tech.com/forums/ls4-performance/1384690-another-intake-option.html

Yup...That's the other part of it.

Yup...That's the other part of it.

The pump or the resoivoir?

Pump.
Check out the pics in the thread I posted, post #12 & #16
I cut the suction line off the O'reillys pump and welded it back on.

That's what I ran into with the TBSS intake. Low91 is having better luck with the regular truck intake. http://ls1tech.com/forums/ls4-performance/1431284-my-2006-monte-carlo-ss-2.html

Another option would be Edelbrock Victor jr with an elbow. Edelbrock has a couple elbows, and IntakeElbows.com has some nice looking stuff, but I'm having trouble with there web site.

I was wondering but thought it might be to high. If it is an option though there wouldn't be a need to modify the tray or power steering.

http://www.skspeed.com/images-dyn/ProductImages/Thumb/E1128095.jpg

Why wouldn't something like this work with an elbow on the top that would bend over to mount the throttle body to? If an adapter were made, would this be a decent way to go? I like the visual appeal as well.

http://www.totalengineairflow.com/wp-content/uploads/wpsc/product_images/edl-3848.jpg

Edit: Oops. I just realized that Brian396 suggested pretty much the exact same thing...

Edit: Oops. I just realized that Brian396 suggested pretty much the exact same thing...

Yeah but you got pictures.:cheers:

I think we would have to use the low profile elbow for hood clearance.

It looks like the Vic jr is 5" and the ultra low profile intake elbow is 3.6"

Might be good for turbo applications, but I think If your n/a you will be loosing quite a bit of low end.

http://www.skspeed.com/images-dyn/ProductImages/Thumb/H19300123.jpg

This should work great for just about the same price as an LS6 intake. Visual appeal is great.

I think that is over 12" tall.

I think that is over 12" tall.

Hell, I would cut a hole in my hood to have THAT poking through.

There just doesn't seem to be any real aftermarket low-profile options.

I was looking through Holleys web site and came across this.
http://www.holley.com/300-121.asp
I think it would be easy to make a hat for this and put the LS4 or a 90 mm tb on the end.

Something like this.
http://i277.photobucket.com/albums/kk55/speedynailtech/th_Untitled.jpg (http://s277.photobucket.com/albums/kk55/speedynailtech/?action=view&current=Untitled.jpg)
A picture is worth a thousand words, well in this case maybe 60 or 70?

Anyone ever try a ported ls2 manifold? From what I've read flows more than an ls6 and has a 90mm tb opening.

http://www.ls1gto.com/forums/showthread.php?t=347366

Scroll down to post #27 this has very good things to say about the bbk intake

In a dyno room it won't get as hot as in the closed engine bay...

I think that is over 12" tall.

Right about that anyway...
http://www.holley.com/data/products/pictures/largehiram_dimensions_EFI.jpg

How does the Eddelbrock flow compared to the truck manifold? Doyle.iam

I believe the only advantage of composite vs metal intake is manufacturing cost and noise insulation.

Would kick ass with forced induction!

Something like this.
http://i277.photobucket.com/albums/kk55/speedynailtech/th_Untitled.jpg (http://s277.photobucket.com/albums/kk55/speedynailtech/?action=view&current=Untitled.jpg)
A picture is worth a thousand words, well in this case maybe 60 or 70?

Holy crap they stole my idea!
http://www.holley.com/300-126.asp

Holy crap they stole my idea!
http://www.holley.com/300-126.asp

That looks effing sweet! But yeah you were robbed.
EDIT: Look at this drawing of it on Jegs. It's laughable how similar it is.
http://www.jegs.com/i/Holley/510/300-126/10002/-1

Holy crap they stole my idea!
http://www.holley.com/300-126.asp

thats funny. you shouldve patented it.

I think they're getting the 10.44" from the top of the block? If so I think it might fit under the hood of the GXP?