ported LS6 gains?
Thread Starter
Staging Lane
Joined: Apr 2007
Posts: 54
Likes: 0
From: San Antonio, Tx
ported LS6 gains? i've been thinkin of porting my LS6 intake but i've not seen very many post on the gains. if there is any one out there who has done this please give me your input. whats gains if any did you see? if you had to go back would you have bought a FAST 90 or 92?
You can't really port the LS6 intake.......but one thing i did do with mine was open up the snout a good bit, if you run your finger down the snout of the intake you will feel a ridge. What I did was sand the material down to those ridges, I'm sure it helped a little but no before or after dynos or anything like that.
I talked to LS2portworks about porting mine and Corey said there is no measurable gain in doing so, about 5rwhp. That small of a gain could be contributed to other factors. Im saving my pennies for a FAST setup, even though I think the price of them is ridiculous.
These threads always end up w/ is FAST better or is LS6 better. The answer is neither. We need your mod list including how high you spin the engine. Generally, up to 6300 RPM, a 90mm LS6 is the best for stock cubes with mild to slightly agressive cams. If spinning up to 7000 RPM, big cam, &/or larger than stock cubes, then generally, FAST is the better choice.
So, what sre your specs?
Debating between FAST & LS6 is like arguing about whether or not Blondes or Brunettes are better. You can't lose w/ either, but one or the other is a better fit for your engine.
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Thread Starter
Staging Lane
Joined: Apr 2007
Posts: 54
Likes: 0
From: San Antonio, Tx
These threads always end up w/ is FAST better or is LS6 better. The answer is neither. We need your mod list including how high you spin the engine. Generally, up to 6300 RPM, a 90mm LS6 is the best for stock cubes with mild to slightly agressive cams. If spinning up to 7000 RPM, big cam, &/or larger than stock cubes, then generally, FAST is the better choice.
So, what sre your specs?
Debating between FAST & LS6 is like arguing about whether or not Blondes or Brunettes are better. You can't lose w/ either, but one or the other is a better fit for your engine.
So, what sre your specs?
Debating between FAST & LS6 is like arguing about whether or not Blondes or Brunettes are better. You can't lose w/ either, but one or the other is a better fit for your engine.
Even if you had those + long tubes, I'd say 90mm LS6. Unless you're gonna spin that stock bottom end to 7K...yikes!
I have tested through tuning software, a modified Ls6 intake that is similar to a 90mm LS6 against a ported aluminum Weiand (thread can be found in a "search," I miss-spelled Weiand, so I think it's titled "Ls6 vs ported Weand"). Anyway, the LS6produced 8% then 4% higher airflow through the RPM range, as measured through the MAF. Again, this test was done on my engine, mods in sig, but, shows a good improvement over a ported 85mm Weiand. So, I'd say it's a good bet that the 90mm Ls6 would produce even better airflow against a stock LS6.
