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POSENG Intake Manifold for Cathedral Port Heads For LS LS1 LS2 LS6
Accessories:
- -Gasket and Hardware
- -Fuel Rails
- -Braided Fuel Crossover Line
NOTE
- Works with LS1 and LS6 Style Injectors, LS2 may need to modify the bracket or add spacers.
- Work with stock LS heads. Aftermarket cylinder heads may result in port misalignment.
- 102mm intake manifold accepts 92mm and 102mm throttle bodies.
Intake Manifold for Cathedral Port Heads For LS1 LS2 LS6
Description:
- Total Height: 8.26 inches (approx 0.3 inches higher than stock)
- Total Length: 19.2 inches
- Material Thickness: 3mm
- Fuel Rail Adapters: 6AN to 8AN
- Fuel Rail Bracket: For LS1 LS6 injectors
- 4*Vacuum Ports Fittings: 1/8 NPT thread to 1/4, 5/16, 7/16 hose end, 1/4 NPT thread x 1/2 hose end
- MAP Sensor Port: M12*1.25 (for 12592525 or equivalent LS3 Style)
- Material: TIG Welded Aluminum
- Finish: Polished
EFI Coating
- TIG Welded Aluminum
- Oil resistant and high pressure resistant
- Sleek look brings you high-quality intake manifold body!
MAP Port in Rear
- Fit for M12*1.25, 10MAP.
- Please block it if it is not used.
Fuel Rails & Fuel crossover line
- Fuel Rail: 8AN
- Fuel crossover line: 6AN
- With a 1/2 inch diameter inner hole, it can reduce fuel pressure drop, help eliminate back pulses, and correctly distribute fuel to all injectors.
Rodney Fernandez
Reviewed in the United States on March 11, 2025
Bad welding. Stay away from this intake. Sucks air from a couple spots and not even 6 months old.
michael
Reviewed in the United States on September 16, 2024
It doesn't work as a factory replacement. The stock throttle body doesn't fit so you need an adapter. The intake manifold is also lower and more forward than the factory intake. So the water pump needs to be changed or modified. If you use the crossover hose in the front it will interfere with the alternator. I installed it on my 2006 chevrolet tahoe. And because of the design of the intake manifold it has a whistle when running.
Devonte W.
Reviewed in the United States on April 9, 2024
Good intake! Welds were nice and MAP sensor port in the back is perfect to hide wiring. Came with everything needed to install on engine! Really nice anodized black finish!
Customer
Reviewed in the United States on November 10, 2023
Injector holes are sharp and have to be shaved down or it cuts orings. Also buy nice gaskets to use the ones it come with are absolute junk. Other than that its decent and looks good
Tim
Reviewed in the United States on January 17, 2023
Looks good! Came with everything needed! Works and fits like it should. Only thing I didn’t like is how I had to make a throttle cable bracket mounts . Because I’m using short style ls3 injectors with spacers. Still shorter then ls1 ev1 injectors so the rail mounting is different. Had to drill holes in the brackets. If you have long ls1 injectors or use the correct spacing it should work fine. So keep that in mind. Other then that love it
Juan manuel
Reviewed in Mexico on April 17, 2023
Llegó en tiempo y forma de buena calidad y como se muestra en la imagen
Marco F.
Reviewed in the United States on August 23, 2022
I have not ran the car so I dont know how well it will do. As far as fitment though here is my findings:1) It has square ports, with that being said it will fit the cathedral ports but I can't imagine it will flow amazing due to the air encountering the flat edges for the cathedral port towards the top2) The flanges were slightly warped from welding but once bolted down it seems to seal pretty well3)The rear port for the MAP sensor works well for a 2.5bar sensor4)The oring holes on the rails fit very well but the holes on the intake are slightly undersize so the standard ls1 injectors won't go in properly (can be jammed in there but it will most likely cut the oring) I found out that using the OEM blue top oring on the bottom seems to solve this issue.5) The brackets supplied to fasten the rails are bent slightly off so they did not fit without re-drilling the holes. They also have slots on the hole that mounts the bracket to the rail for the side to side play but that is also not long enough.I gave it 4 starts because overall this can be made to work and it is a nice looking piece, but it definitely requires some effing around.
Max rodriguez
Reviewed in Canada on June 16, 2022
This does not perfect fit u need too machine injecteur holes and cut injecteur fuel rail brackets and do not use original brakets its a pain to make them staye in there sockits put somme rightstuff or else work great !!!
Ryan Smith
Reviewed in the United States on June 15, 2022
Bolt holes line up well, flanges are flat and the prep work needed is minimal. If you plan to install this on an engine using the truck accessories like I did you will need an idler pulley relocation bracket (ict billet), a -8 orb 90 fitting as well as modify the mounting brackets for injectors (I’m running FIC 1000cc). We will see how well it holds up to 15 lbs of boost this weekend.
Jamie
Reviewed in Canada on November 12, 2022
Some bad machining on the injector pockets but seems to work out just fine. Stock truck injectors only fit if you change the O rings out for smaller ones. Overall very happy with the finish and well worth the cost savings
My opinion about this product
Reviewed in the United States on April 12, 2022
I have to do some research how majority of these intakes are made by the same company in China but this one was less expensive so I ordered it to upgrade my gen 4 F body 2002 Trans Am It came in two days . I began to open the box and started going through it and I noticed there was a chemical haze/ film on the whole intake manifold I try to clean it but was not successful , but that wasn’t the biggest issue all of the mounting hardware manifold gasket fuel rail mounting was all missing but the fuel rail was there was not there the fuel rail was there ,, I went back to the website to check what came with and all that stuff is supposed to be there ,,, as stated in the description ..So I contacted Amazon immediately to let them know and the rep was very helpful apologetic and I was just asking do I get hardware she says no return it and will send you another one I said OK.Replacement Arrived this time the unit did not have this weird film / haze on The entire intake manifold all hardware was there so I returned the original intake manifold missing the hardware that I needed I can’t tell you about the performance but I feel pretty confident when I was comparing the original and this intake it looks like it’s gonna be a pretty good install but I can’t say that yet until I start the installation process,I will give you an update on the entire installation process any any tricks and what issues that may occur
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