Your wrong man just let it go!!!

LS7 4-Barrel Intake Manifold 25534394 Description
25534394 LS7 4-Barrel Intake Manifold
• Lightweight GM Racing design for use on LS7-style heads
• Reduced mass design, porting not recommended
• Includes mounting bolts and instructions
• Uses LS7 carb intake gasket set P/N 19172113
• Machined for 4150-style carburetors and has 3/8" NPT vacuum boss
• Also available with injector bosses, P/N 25534413
NOTE: LSX Ignition Controller P/N 19171130 is required for carbureted applications.
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LSX / LS7 Carbureted Intake Manifold 19244033 Description
19244033 Single plane Std Deck Carbureted Intake Manifold.
GM Performance Parts is pleased to announce the first of the many components and manifolds available under the LSX product line. This first release is our single plane intake manifold designed with LS7 ports and is available in the standard deck or tall deck version. Additional material has been added to this manifold for custom porting or modification work. Spec: • LS7 ports configuration • Single Plane for mid-range and top-end performance • Injector bosses cast in for injection or Nitrous use • Extra thick materials for professional porting • 4150 style carburetor mounting • Uses OEM O-ring gaskets and fasteners ( included ) Part Number 19244033 Std Deck version Part Number 19244032 Tall Deck version
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Just because it says ls7 STYLE PORT does not mean it's for a ls7 STYLE HEAD

 

The wording is very weak-but i understand what you are trying to say-

 

I agree but that's what it is. We get so caught up in the fact that USUALLY anything with a ls3 port is a ls3 head anything with a ls7 port is a ls7 head ect. The LSX stuff is not built exactly like the other stuff but doesn't mean that most times it won't work. You just happened to be one of people that actually looked and took note(talking about the OP) It's not X or Y companies fault it's just that's how they made their product. The wording is how they make money and then if someone like you catches the small difference they keep thier hands clean. Like if you say something is built off something else but you make it thicker well then it's not the same.

 

slippi84 why are you so gung ho on defending the FAST? His didnt line up with either head. The ports were measured to be the same including bolt holes.

Either O.N. was unlucky and got two screwed up intakes or it is a common problem. Most people do not take the intake apart to check for the line up so this problem may be more present than thought.

He bought an intake that works and will make more power. He is getting the word out to CHECK YOUR FAST to be sure it isnt a common problem.

Air on the side of precaution so to speak.

You didnt use a FAST either due to price and partially this thread.

 

Slippi you can keep banging on all day long about it and you can post something that reads the words LS7 style port and then i can just post the picture again which shows the LS7 standard manifold where it clearly states LS7 and LSX LS7 heads.

FOR USE ONLY WITH LS7 AND LSX/LS7-STYLE CYLINDER HEADS


This pulls your story apart about "LS7 style ports" and it matches it up to the heads. Also this manifold sits on the front cover of GMPP magazine on top of the LSX454. Fact is the LS7 head has been measured the LSX head has been measured it is the same, GMPP call the LSX head "as cast" and it is as cast it is identical to the LS7 with 2 additional features.

So as far as your LS7 carb style manifold which reads "LS7 style port" that is pulled to pieces when you read the one i have just posted as it is LS7 EFI manifold and it suits both LSX and LS7 with "LS7 style ports".........

I don't understand why you are so determined to back FAST here, but clearly there is a mistake on their behalf.

 

This thread has run is course. No one is winning and no one is going to change their mind.

O.N. assumes FAST is always wrong...

Slippi & I basically agree that no one else is having issues with their FAST LS7 intakes.

/thread