JoSeY

Not sure if this goes here or in External Engine.

Here's a rundown. full bolt-on car with MTI Stage 2+ Heads, X1 cam, Custom Tuning, Mac Headers, Ported TB, Stock Maf descreened, TR6 Plugs, ORY, with Custom Madman Exhaust, 4000 Vigi stall...and other things I'm certain.

The car has put down over 400rwhp with all this and STOCK LS1 Intake. What Kinda gains will I see putting an LS6 intake?

TIA.

Z-Rated

Id guess 10-15 rwhp. You dont have gas anymore do you? It would be a mod worth doing for sure. And look into the LS6 lower valley as well.

JoSeY

Lower valley?? what are you talking about? the cover that covers the knock sensors? I have to replace one of those...kinda in a time crunch to do this....the parts will be here in 3hrs and just trying to figure out what I need to get it done.

Stu

I would try External engine.


FWIW: I got 1.5MPH out of it on a cam only car.

sr71bb

iTrader: (3)

I got 16HP increase on a similiar setup by just changing to an LS6 manifold

99 Black Bird T/A

iTrader: (4)

Had it all done at once on my car so I don't know what the LS6 is worth over the LS1 in rwhp. When flow testing the heads we found ~17cfm more with the LS6 intake over the LS1 intake with my ported heads. I would think the LS6 would be worth ~10-15rwhp with good tuning at least over the LS1 intake. Some have found ~20rwhp difference. With all the other stuff you've done, it'll be worth getting a better intake.

JoSeY

I would say SEAT OF PANTS...20+...I just pulled a friends car HARD that I used to have trouble walking. The INTAKE WAS WORTH IT!!!!!!!

99 Black Bird T/A

iTrader: (4)

KEWL!

Are you going to dyno again get some hard numbers?

Navy David SS

iTrader: (13)

Believe every car will respond differently to every type of mod (no matter heads, cam or intake). The LS6 intake IMO is a good bolt on.

My gains are not normal. I added the LS1 intake first of July this year.

Stock Intake: normally 12.8 at 106-108mph; Nitrous: 11.77 at 115mph both in the heat of summer

LS6 Intake: 12.59 at 112.5; nitrous 11.38 at 124mph again in the summer heat.

Again buy it.

David

JoSeY

sooooon sooon dyno numbers...I wnat a new 4l60 before it goes on the dyno though. the one I have is on it's last clutch...LMAO...

WicketMike

iTrader: (13)

i gained 18rwhp

GODUCKS

Me 2

JoSeY

Thanks for the info guys!!!

tooquick2beslo

I was wondering I have a 5.3L engine in my truck.
Someone told me that I already have the Z06 manifold on my truck. I was wondering is this true ?
Any help would be greatly appreciated.
thanks,
J.

Ps. I am a newbie.

6-SpeedZ

iTrader: (1)

No, its not true, trucks dont even use the same type of intake as the LS1 and LS6 motors. They are much taller, made for more lowend.

Nasty N8

iTrader: (33)

You won`t notice any gain on the dyno if you dyno with a new trans. New trans tight looses HP on a dyno. Just to let you know.

Nate

tooquick2beslo

So do you think its worth getting ?
One of my friends with a LS1 told me that I should wait for another intake that is coming out in October made by fast.
He says that it will add another 15 rwhp to the already LS6 intake. I think I am going to wait for that one.
But do you think that it will help my truck perform any better ?

6-SpeedZ

iTrader: (1)

absolutly

Black Sunshine/ 00SS

iTrader: (1)

You can wait for the FAST intake if you want. But so far it has only been rumored to increase over the LS6. I myself want to see some confirmation of that once it somes out, before I spend my $$.