NemeSS

iTrader: (127)

i suspect the edelbrock pro flo tunner ram thing intake. or a super victor with with a 90* elbow

grifter757

iTrader: (11)

5 pages and still no REAL answer. For time and money sake go with a LS6 i guess. I might switch to the new holley unit when it comes out if they make one that fits on LS6 heads.

XtremeDime

iTrader: (16)

"Best" is a subjective and is case-by-case. We all have different goals and different setups, so asking what 1 intake is best is a fool's errand. I dont spin over 6200 RPM on my street car, so it wouldnt be worth it to upgrade to a beck sheet metal intake. Maybe a vic jr is in my future but am I expecting to pick up much if any power from it? No but id like to distribute the air a little better to prevent detonation, and for looks. If you are spinning a 408 to 7500 and only using an ls6 intake, then you are leaving alot on the table.

For most of us, our cars wont see more than 500-700whp so spending 2k+ or chopping up our hoods and cowls for an intake manifold is not worth it.

Fireball

iTrader: (21)

I moved the EGT discussion into a new thread...

https://ls1tech.com/forums/forced-in...turbo-car.html

BLNLS1/RX7

iTrader: (2)

I run the LS6 intake with stock throttle body at 12lbs. of boost.

Clean94Z

iTrader: (5)

I have a Mast Motorsports LXR intake. I was told it was one of the best intakes for LSX. From what I gathered they tested a few different intakes including {fast,victor jr} before designing this intake. This intake is suppose to have a much better and flatter torque curve without much mid or low end loss in comparsion to a fast or stock ls7. And it is suppose to have a healthy HP gain. I believe it was tested in gmhightech on a built LS7 motor and had a 47hp gain. I bought mine for steve turley on yellow bullet. He was running it on his 427 sporting a 106mm. Ran a 7.44@198.76mph

98Z28CobraKiller

iTrader: (17)

Why did he sell it?

Monte4ever

iTrader: (2)

Damn that's one nice looking manifold. Looks like it will get the job done.

98Z28CobraKiller

iTrader: (17)

Which job do you mean? This things job is to deliver 1500-2000 rwhp worth of air. You put that thing on a 500 rwhp car and it'll kill your throttle response dead. Not to mention that it's 2 feet tall.

Josh@Lashway

carb style, great price, great flow, great top end power

Clean94Z

iTrader: (5)

He was a full sponsored racer who had been doing it for a long long long time. Said it was time to get out of the game. Its a full time job racing every weekend on top of his full time normal job and his family. Said it was time to focus on other things. He parted the whole car out.


He is most certainly right it is a High Hp intake and it is very tall. The intake is 8 inches without the hat and 14 inches with. The longer runners and equal runner length is why its suppose to not effect the low end like the typical single plane carb style intake. But it also does not come with the typical carb intake price. I bought mine used with hat and rails for $1600.00


Here is a graph of it on a built ls7 na setup. {ENGINE DYNO}

onfire

iTrader: (17)

Factory LS7 spanked the Wilson in that test.

Clean94Z

iTrader: (5)

"Unfortunately the Wilson sheetmetal intake appeared all-wrong for our application. Torque hit only 594.5 lb-ft at 5,300 rpm and was not as effective as the stock LS7 in carrying it throughout the rpm range. Horsepower hit 673.2 at 6,600 rpm, indicating that this manifold is definitely more at home at higher rpm than stock. Wilson says a motor making peak hp at 6,800-7,000 rpm, and peak torque at 5,700-5,800 rpm, is much better suited to this manifold-as the test would indicate."

onfire

iTrader: (17)

Ported Stock LS7 = blue line vs ported FAST 102 = red line on a NA 441ci engine. FAST was worth 13 hp more...factory LS7 intake is pretty good for $378.

Chris81

iTrader: (1)

camaroandreas made 1950 hp with a hyd roller cam and the Edelbrock Pro Flo intake, he told me on the Bullet he was seeing about a 100 degree variance between some of the cylinders before correction. I'll take that for a cheapy intake that looks cool..LOL

I think i'm going to run one of those or modify one of the new Holley intakes for cathedral heads and running them on my motor.

stevieturbo

Still a waste of time comparing n/a power graphs for a boosted intake

onfire

iTrader: (17)

Why do you think so....?

I've seen plenty of Ford NA intake engine dyno data then boost data on the same engine same intake manifold and the results align. Boost just brought the curves up much higher but the curve slope was close to NA.

If the manifold NA was a dog down low....it was a dog down low with boost.

I lot of Ford guys went from GT40 intakes to breadbox intakes because "boost would fix the low torque loss of the breadbox"....and it did not happen...and went back to GT40's with boost.

stevieturbo

Well, in that graph the Wilson sheet metal seems poor compared to the others. With boost do you think it'll be the same ?

n/a if you fitted a carb intake with a tight elbow to clear your cowling....I'd think it would be pretty crap.
With boost ? I'd say it will still produce excellent results.

I see what you are saying about some areas, and I guess it's hard to argue with that. But intakes need to be tested in the manner they will be used.

onfire

iTrader: (17)

Well, in that graph the Wilson sheet metal seems poor compared to the others. With boost do you think it'll be the same ?

Yes. I only say that because the Wilson that we tested with 18psi of boost did exactly like that graph.

Now look at the two attached dyno graphs:

1) 12psi of Boost on a Fast and a LS6 manifold.

2) NA graph of a Fast and a LS1 manifold.

Boost just elevated the dyno curves...it did not drastically add hp in some areas and not others. Also shows the LS6 is pretty good under boost


n/a if you fitted a carb intake with a tight elbow to clear your cowling....I'd think it would be pretty crap.
With boost ? I'd say it will still produce excellent results.

That's a good point because of the tight elbow. Just guessing...a tight elbow that was a hp killer under negative pressure could be bandaided somewhat with positive pressure...still a hp killer...but bandaided...the elbow kills a great manifold IMHO.


But intakes need to be tested in the manner they will be used.
Could not agree more.

IMHO in a 6500rpm and down motor, 1200rwhp and down motor...it's hard to beat a LS6 and a LS7 factory manifold for hp area under the curve. Nevermind cost, weight, heatsink, etc.

Shawn @ VA Speed

iTrader: (3)

here is a couple spy pics of an LS intake coming to market. Will be available early summer.

This is one half. will be 2 piece design for easier porting and other internal mods.