Introducing Stage 2 Intake Porting - LS1TECH

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Introducing Stage 2 Intake Porting

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Old 10-05-2009, 04:39 PM   #1
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Default Introducing Stage 2 Intake Porting

Stage 2 LS2/3/7 L76 intake porting

While the intake manifold is more often than not a restriction in the induction we aim to make it as little of a restriction as possible. All of our typical stage 1 LS2/3/7 manifolds are ported to about 93mm, or 3mm larger than the stk TB flange opening. Our ported FASTs are closer to 95mm but they are over 94mm. This is all in the interest of most gross flow at the entry and most plenum volume. Typical stage one manifold porting is very extensive and time consuming to port correctly. We remove a very substantial amount of material from the plenum, TB flange, and runners. We offer the most aggressive porting for the dollar and strive to go the extra mile in all that
we do: porting, tuning, and installs.

We avg over 11rwhp and 13rwtq from our base Ls2 manifold porting with over 420 LS2s to our credit, 95+ LS7 (18RWHP and 20RWTQ), 60+ LS3 & L76s (12RWHP and 15RWTQ) and over 400 TB's.. We were curious as to how far we could take the manifold by really opening it up to the next level and taking a page out of the FAST/Wilson notebook...

Stage 2 porting is taking the manifold to its limit - as much of the plenum is removed while still staying safe from vacuum leaks, which takes about twice the time to port. The FAST manifold utilizes as much plenum volume as possible within the space requirements - the larger the air reservoir the less likely it is to deplete it at medium and high rpm. Hence the difference from an LS1 to an LS6 manifold, plenum volume. (We have tested this manifold swap many times for an avg gain of 10RWHP and 10RWTQ; again plenum volume.)

We rework all the runners for an even deeper cut and we use a much more aggressive sanding method, even deeper than the 8 inches we typically port in the stg 1 manifolds. For stage two manifolds we remove the inner posts and completely flatten the plenum floor all the way to the back on the inside of the manifold as well as the outside so as to make a sort of air gap between the valley and manifold base. We epoxy small aluminum plates, screw them in, and then epoxy the inside as well, to prevent any air leaks. This stage 2 manifold porting is a cheaper alternative to a FAST manifold, but it is also designed for someone that is trying to FULLY optimize their power on a budget. We are targeting those that want the MOST from the stock manifold at a decent price.

On our own GTO we tested the stage 2 manifold vs our stage one and we picked up an additional 6rwhp and 7 rwtq on an A-B test on the dyno same day, same weather, same engine conditions. This is in addition to the 11/13 from the stage one manifold We also had an independent test done by a shop in NY and they gained over 15+rwhp and 18+rwTQ.
We do not offer stg2 for the FASTs. We port all of them as aggressively as possible over 3.5 hrs per manifold.

Stock opening:
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Stage 2 opening:
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Stock floor:
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Stage 2 floor
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Stock Floor:
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Stage 2 floor:

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Stage 2 on the top, stocker on the bottom:
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Stock:
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Stage 2
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The Stage 2 manifold pictured here has been on our GTO for the last year with out any problems what so ever. It is after this long term testing and dyno proven results that we are proud to now offer this power making manifold for $375.00 (like all of our manifolds, on an exchange basis). These are for LS2, LS3 and LS7 manifolds. We do not port the LS1 & LS6 manifolds, as we have not seen any measurable gains from porting.



These are pictures of the just finished LS7:

Throttle opening
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Throttle opening
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Floor
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Intake runner
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Intake runner
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If anyone has our original stage 1 manifold we will do the additional porting needed to make it a stage 2 for $125.00. The only requirement is it has to be our manifold and not a competitors.

The Stage 2 intake manifold is $375.00 and if you want to add a ported throttle body, that is $100.00 (save $50.00 off TB by ordering together), plus shipping (usually no more than $20.00). The core charge for both is $550.00 ($275.00 each), it is refunded when we receive your undamaged intake and TB back.

If you elect to ship us your intake and throttle body, the turn around time is typically 2-3 business days.

Our shipping address is:

Fasterproms
19103 Sunlake Blvd.
Lutz, FL 33558

To order call 813 476 7364.
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Old 10-05-2009, 06:14 PM   #2
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Great.... That leaves out about EVERYONE with a real car! lol jk

Man that sucks about the LS6 cause I started to get happy...
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Old 10-05-2009, 07:01 PM   #3
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nice work!! i have an ls6 tho!
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Old 10-05-2009, 07:36 PM   #4
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I was getting all excited until I read the not ls6 part
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Old 10-06-2009, 12:10 AM   #5
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yea ls6 here, worthless read for us. i do feel that if you are going with some type of turbo blower its worth the extra money for a FAST intake instead of spending half to port the factory. you get more options with direct port nitrous setups and im sure they are more structurely sound then a ported stock for big power combos.
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Old 10-06-2009, 12:40 AM   #6
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I wouldn't be complaining if you have a LS6 intake, it is better than the STOCK LS2 intake, that is why this porting is so important. I'm glad we have a ls6 and dont need to do any porting. Now getting a fast and getting them to port it is a different story!!!

the only thing I wish we had is the larger TB
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Old 10-06-2009, 02:47 AM   #7
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Haha Well I guess i found what my next mod is!! Alot cheaper than buyin a fast 90.. Hell yea!
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Old 10-06-2009, 10:55 AM   #8
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Quote:
Originally Posted by kpc01 View Post
I wouldn't be complaining if you have a LS6 intake, it is better than the STOCK LS2 intake, that is why this porting is so important. I'm glad we have a ls6 and dont need to do any porting. Now getting a fast and getting them to port it is a different story!!!

the only thing I wish we had is the larger TB
Exactly. With the LS6 manifold, they got it right, as even our porting will not yield significant gains. Now, on the FAST - we can make them REALLY FAST, as the average, again average gains from a non ported to a ported FAST is 10 whp and 10 wtq. Have seen bigger combos with much higher results.

Quote:
Originally Posted by V-CIOUS View Post
Haha Well I guess i found what my next mod is!! Alot cheaper than buyin a fast 90.. Hell yea!
This is how the Stage 2's came about.
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Old 10-06-2009, 11:05 AM   #9
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Have you guys thought about doing the 90mm conversion on the ls6? That would probably do well with the V section.
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Old 10-06-2009, 12:24 PM   #10
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Nice work guys!

-Nathan
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Old 10-13-2009, 11:45 AM   #11
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Quote:
Have you guys thought about doing the 90mm conversion on the ls6? That would probably do well with the V section.
Because the LS6 flows very well as it is (porting does not increase power) there are no plans for that.

Quote:
Nice work guys!

-Nathan
Thank you sir!


Here is a helpful link for those who do their own tuning or may have someone tune their ride after a ported intake/tb is done:

http://www.ls1tech.com/forums/pcm-di...folds-tbs.html
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Old 10-20-2009, 12:07 PM   #12
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We also have LS2 (stage 1 or 2) intakes available for out right purchase for $550.00 shipped in the lower 48. The LS2 stage 2 should show gains over stock of at least 17 rwhp and 17 rwtq or more depending on mods.
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Old 11-02-2009, 02:14 PM   #13
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Default LS7 Stage 2 vs Stage 1

We now have a LS7 dyno to show the gains from a stage 1 to a stage 2;

This Car is an 07 Z06 with the following mods:
Callaway CAI, Fasterproms Ported TB and stg 1 manifold, STOCK EXH manifolds, B&B Fusion catback, Fasterproms custom tune.
Run 1 was a baseline pull with all aforementioned mods, fully optimized.
Run 6 was Stg 2 manifold and a tuning tweak, more fuel.

We were pleased to get this kind of power in weather in 90F + air temps.

Bottom line: Stage 2 over Stage 1 picked up 6 rwhp and 9 rwtq through out the rev range, and 10 and 10 in some areas.

Jeremy Formato



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