01SOMZ28

iTrader: (37)

How much power will i be leaving on the table if i use an LS1 intake after i get my new heads on? It's an 01 so it had an LS6 intake but i sold that a while ago but i'm wanting to get the car on the road so i'm thinking about using this non-egr ls1 intake i have. Do you think it will hurt my setup much? I was going to run a FAST 102 but i don't feel like dumping $1300 on an intake/TB right now, or i may pick up another LS6 down the road too.

Blk98Vert

iTrader: (2)

Probably down 20 or so

LT1Formula007

iTrader: (66)

Ok, IDK what your setup consists of, But I assume it's a LS1 with H/C/Stall/Bolt Ons/ Etc. ??
But again, IDK what you have. So assuming you have the above....

IMHO, The LS1 intake is going to hurt your power for sure.
Will it get you by? Yes!
Would it be better to replace it now, rather than buying 1 in the near future and paying for a retune? That's up to you. I would do it now and save the $ I would have to pay for a retune.
I would "At Least" buy an LS6 Intake if the $$ is not there for a FAST.

FWIW, My brother picked up 24 rwhp and 39 ft lbs of torque on his LS1 H/C/I stalled auto combo. Just by switching from a LS1 intake to a FAST 92/92. In fact those #'s were with his fuel pump not keeping up either. Fuel Pressure was dropping from 58-60 to 30-32 # by the time he was done wth the tuning for the day. He replaced the pump and installed a hotwire kit, but hasn't been back on the dyno since.

In theory, The more air, and the more exhaust an engine can move... The more power it will make. Limiting it in any way will limit your power.
That's why Forced induction cars make so much power. The force in massive amounts of air, and feed it fuel, and expels massive amounts of exhaust.

So take that for what it's worth.

James

ULTIMATEORANGESS

iTrader: (4)

for what you can get an ls6 manifold for its worth it.

justin hover

I just did my ls6 and p/p throttle body...Def. pulls alot harder...I thought it was alot of hype I was reading as far as gains over the ls1, and didn't think I'd notice a difference. I was dead wrong..This is without h/c so I'm sure you'd be leaving alot of hp on the table

BOBS99SS

iTrader: (2)

you will be down for sure, honest the ls1 intake on even just a cammed motor is a big choke hold, imo you would gain more with a fast but for 300 bucks to leave 20 or more hp on the table its seems worth it imo,

BOBS99SS

iTrader: (2)

honest with bolt ons you could let it slide, but a head and cam motor its night and day, imo you put the money up for heads and a cam dont half *** it

TransAmWS.6

LS6 intake is definitely superior to the LS1 all across the board, even on a stock application you would be gaining a little something by switching over to one, and the LS6 only starts to shine more once you start modding heavier. However, you can just run the stock LS1 with your H/C, but just know you will definitely be leaving a little chunk of power behind. For the prices you can get the LS6 for it really is worth it to pick one up.

MikeWS6

I also was surprised how much I gained going from an ls1 to an ls6 intake. No wonder everyone loves them.

LT1Formula007

iTrader: (66)

I Completely agree with this ^^^
Considering you've already put the $ up for a Heads/Cam setup, save a few more $$$ and put an LS6 intake on it before getting it tuned. You'll be glad you did in the end.

-James

gMAG

iTrader: (1)

If you happen to buy a new LS6 intake, be sure to retain the 8 rubber intake gaskets from the LS1 intake (before, and if you decide to sell the LS1 version).
I got a great deal on a new LS6 intake. When it arrived, I realized that the LS6 intake did not come with the 8 gaskets. Too late...I had already moved the LS1 intake. It cost 42 addtional dollars to acquire the gaskets.

LT1Formula007

iTrader: (66)

Correct, All of Them share the same intake port seals... The FAST (78/90/92/102) / LS6 / & LS1 intakes!!!
And fwiw, I buy all of mine through O'Reily's or Advance Auto Parts. I know they are not too expensive tho. I have a business account through them and I wanna say they are about $25 my cost.

-James

senicalj4579

iTrader: (41)

Just stop ******* around and get another ls6 for that thing!

justin hover

Oh yeah...my ls1 intake sold for $165 on e-bay last week..I was hoping for $100...essentially I paid $160 for my ls6...

95maroz28

iTrader: (21)

think the hp increase would be more on a boosted motor?

LT1Formula007

iTrader: (66)

^^^ Theres guys making 800+ rwhp with LS6 Intakes. But they are Boosted.
NA engines would need the larger intake to make power.
With FI, It doesn't hurt it as much b/c the FI setup will force the air into the engine. Not relying on Atmospheric Pressure to do it's job.
Positive Pressure is where it's at man.

So to answer your question, Yes! There is a substantial gain even with Forced Induction setups!

Blk98Vert

iTrader: (2)

Yes, a while back GM high tech put a FAST 102 on a boosted LS2 in a Trailblazer. Reusing the throttle body from the truck intake they gained 50hp and 60tq at the wheels

95maroz28

iTrader: (21)

im at 560ish whp at 9psi on ls1 intake. think it would gain 25+ with an ls6? if not i just keep ls1

Blk98Vert

iTrader: (2)

I can see that

95maroz28

iTrader: (21)

would be nice i want to try to hit 600whp on a stock 98 bottom end before it blows. gess ill maybe throw one on before i get retuned for the 60s.