Tbaum101

First some background...
I was a member here for years in the past. I have a 1998 Trans Am Convertible that I did quite a bit of work on. While I had it torn apart the last time I was devastated by the recession. I had to move 3 times in as many years afterwards. At any rate...now I have an old Trans Am with a few items I've scavenged for my current car: 2010 2SS Camaro. Let's just say I'm not making what I used to but still want to have a fast car. I pulled my old N2O kit out of the TA along with a few other items. Now I'm looking at my Professional Products polished aluminum intake manifold with the anodized fuel rails. I know the ports are Cathedral shaped on it and that the new LS3 heads are rectangle. I found an adapter online for this exact purpose which shocked me. I also know the bolt patterns are the same. I'm thinking about this for a number of reasons. The intake is set up for direct port N2O which I want to do. I already have it and it looks good. Costs are a concern.
So my questions are this...
1) Has anyone done This?
2) Should I do this?
3) Am I shooting myself in the foot by going backwards in generations with lower flow numbers?

Any advice or guidance will be greatly appreciated.

Patron

Just get a factory Ls3 intake off of Flea bay. I purchased a Ls7 intake with rails for $100. With the added $ for the adaptater just have the the intake radius rod done. Keep it simple. Add the Nos kit.

https://ls1tech.com/forums/generatio...fast-lsxr.html

pantera_efi

iTrader: (1)

Hi Buam, you WILL find an ALuminum Intake will ADD heat to the air that enters the port, (NOT ITB's).
This reduces HP/Torque.
I would fit a LS3 intake, as stated, and a low cost item. (take-off)
I have the 90mm Air Doors that are DBC. (my conversion kit @ $135.00) + core.

Would you like my help ?

Lance

99 Black Bird T/A

iTrader: (4)

As both prior posts mention definitely an stock LS3 intake over the PP intake.

Tbaum101

First, thank you for all of the replies. It's nice to see this forum still has the same kind of helpful and supportive people on it. My 2010 Camaro is running fine. I don't NEED a new intake...I was just thinking about using the PP LS6 one I have because it looks good and it has the bungs for the direct port setup...and let's face it, because I have it laying around on a car that doesn't work!

So it sounds like the LS3 intake is indeed better than the LS6 one which I expected honestly and it makes perfect sense...I was just wanting some affirmation I suppose as well as the ability to get faster without spending any money.

I definately want to spray the motor and want to do it the best way. I did the old Halo Kit from Nitro Dave back in the old days under the SLP lid. While that was a great kit, it was less than optimal when compared to the direct port method. That's the reason I got the PP Intake to begin with...I just never got to finish the project.

So it sounds like and LS7 OEM intake would be a good and cheap move. Can it be direct ported. If not, any suggestions?

Again, thanks to all for the advice.

MY_2K_Z

iTrader: (1)

Nvm...

KW Baraka

iTrader: (7)

You got LS7 heads? ........

KW

G Atsma

WHO is this nut? Wants to put an LS6 (cathedral heads) intake manifold on LS3 rectangular heads?

dreadpirateroberts

iTrader: (1)

i wouldn't bother. the adapters still give you a very abrupt transition. you'd probably cause more harm than good.

Tbaum101

Afree the initial post, I pulled the old manifold and they weren't cathedral shaped at all. Looks like they were made to just go over the entire port. So there is no adapter needed actually. And as far as who I am....read the post.

themealonwheels

iTrader: (20)

No, technically the manifold ports don't "look" cathedral as much as the head ports look cathedral. But bolt it on and try and run it, post pics when you do.

Just to be clear, don't do that. And for that matter, skip the adapters for an NA application. Between the adapters and the junk intake, you will make the car "slower" than it is with your Professional Poop intake. Sell your intake and get a stock LS3, then spend the money to make it direct port if you have to.

Johnnystock

iTrader: (6)

You cant beat the LS3 for the price/performance. FAST intakes struggle to perform better than the LS3 on a 6.2l application. Look at the thread ported FAST VS rod-mod& ported LS3 and youll see that the LS3 is the way to go.

AgFormula02

iTrader: (13)

to the OP:
leave the current intake on there. Just because other intakes will bolt up it does not mean they will work better. The transition from intake to head is critical and they need to match up as best as possible.

Re: Nitrous
if you want good distribution, a dry shot far away from the TB will ensure a pretty homogeneous mixture by the time you reach the intake.

dreadpirateroberts

iTrader: (1)

dude, no. of course they aren't.

cathedral ports are big long rectangles. ls3 style are short fat rectangles. they also come nowhere close to lining up.

dreadpirateroberts

iTrader: (1)

https://ls1tech.com/forums/conversio...-patterns.html

even when you don't take into the consideration the injector hump at the top of the cathedral port, they still don't line up.

dreadpirateroberts

iTrader: (1)

also, the LS7 ports, although rectangular like the LS3, are also not the same size and not in the same location, so they will not line up.

dreadpirateroberts

iTrader: (1)

see? not the same.