Here is some data for you guys to make the case for the FAST LS7 intake. It truly is an amazing piece considering it improves all areas, not just peak power.

Today we A-B tested this ported intake on a LS2-based 427 with LS7 heads and GM Stage 3 cam. It gained about 3hp on the top end and sacrificed some of the bottom end. In the mid-range they were about the same.

Don't ask me who did the porting because I don't even know. This intake was brought to me. I don't even want to know (if you know what I mean).

The red line is the stock LS7 intake and the black line is the ported LS7 intake.

 

Oh well....at least I can say that my intake is ported! That's good for at least 15 at the wheels when people ask!!!

Thanks for the info Jason.

 

If the work done on the intake was as bad as you say it is, then why would you make this post? Seems to me it would've been prudent to wait until you had an opportunity to test a properly ported intake. We all know that you can screw an intake up and from what you're saying this one is screwed up.

What i'm taking from this is: Even a shitty port job will net you 3 wheel. I wonder what a quality port job would do?

 

I told myself I would not get into this b/c it will probably go way downhill, but.... this particular intake does not have a $hitty port job on it and it wasn't done by Bubba. It was simply a very mild clean up of the runner outlets to eliminate any flashing or casting mismatches. That is all. Nothing was done to the inlet, and the test did not use my ported TB.

There have been so many posts on several forums about the LSXr intake that a couple of us asked Jason to A-B this mildly ported intake vs. a stock one. I guess the takeaway is that a mildly ported intake may only net you a few HP. Thanks for the work Jason, we appreciate it.

 

I don't get it...

 

For those that weren't part of the other conversation, here it is.
https://ls1tech.com/forums/generatio...t-results.html

 

Ah, i get it now haha. But, if it was only flashing that was removed, then, that really isn't a "porting" job! Its just a clean up, so I can see how it only made 3 measly more hp. BUT, that new LSXR manifold is just bitchin. I really find it hard to believe the gains on it, but its true!! I WILL be getting one sometime this summer, definitely.

 

Whats the difference? I'm being serious.

 

I/we do not port them but have tested 3 LS7's ported by LS2portworks. Two of them where a back to back 14-16 rwhp. We had a truck intake ported by the same guy and it picked up over 25rwhp.

 

A good ported LS7 intake averages around 11 RWHP. Everyone has seen it time and again. The LSXR is a bitchin' intake with good gains so there is no need to put down a nice ported stock LS7..............it will sell itself!

 

Wow, didn't realize I was going to start a war when I first asked about this subject in the other thread...

Simply removing casting flash is removing irregularities that weren't designed into the system in the first place, it's basically bringing the intake up to its "ideal" or theoretical potential. This can be compared to resurfacing a cracked, potholed road with fresh, smooth asphalt. Traffic moves as it was intended to.

"Porting," as many of us have come to know it, involves actually removing material evenly from the intake ports to make a wider path for the air to travel. Following the analogy, this is adding another lane, making traffic move much quicker. It usually also features some sorts of smoothing out edges, since corners (concave and convex) create turbulence and inhibit flow. Back to traffic, this would be like removing stop lights and stop signs which are concentration points for congestion.

It's important to remember that the port job is going to vary not only by quality, but by goal. Just because the porter decided on doing only an hour or so of cleaning up the stock intake doesn't mean it was "a shitty port job," it just wasn't as aggressive as some people like theirs. That being said, LS2Portworks probably turns around more port jobs than any other single operation, so it's safe to say they are the standard.

I couldn't see this 3HP gain being costing as much as others, but the $300 or so that's charged for most fuller port jobs, I would consider to be "worth it" for the gains they've proven before. More importantly, I would definitely consider the FAST 102 intake "worth it" to someone like me who demands the best, no compromises, name-proven, CONSISTENT performance that they're still living up to, even if it means holding out for my next paycheck to get it.

Congrats to FAST for doing it again, and also to GM for creeping up on them.

 

Thats what I wanted to know.