rob20rx7

I have a 2009 LS7 I am supercharging now and was wondering if there is any advantage to using a sheet metal intake or high hat intake like the Holley . I know they sit higher but I already have a higher carbon hood. Is there any performance advantage? If not are there any disadvantages?

Thanks!

DOUG @ ECS

More even cylinder distribution, and more CFM basically. Match the cam to a better flowing intake and the high end rpm pick up can be substantial.

chuntington101

Disadvantages are you can loose a few fair chunk of power down low. Dot always a disadvantage but worth thinking about. Some also have very small plenum volumes which can't help distribution. Also they cost a fair old wedge of cash which your stock intake won't!

Unreal

On big extreme setups they can help, but based off your blower and build, it would be a complete waste. When you get in the 1200+rwhp range they can be worth ~40-50hp, but on a basic <1000rwhp I wouldn't even consider it.

rob20rx7

Thank you sir! always have some real good advice!

Saw one on a C6 this weekend but looked to be more for looks because he didnt outrun even one car on the 1/8 mile

Just an idea i was pondering.

5 Liter Eater

Lets not forget about the bling factor.

Unreal

Yes, but $2600-4000 on an intake for bling on a stock motor <750hp build would be a serious show car person.

5 Liter Eater

Well if all you're after is bling they can be had for ~$500.

croatbob

redlines TT z06 is bout to crack a 7 on stock manifold. they work great on FI. no real need. *** they look good tho

fsuforever

More power up top ,may lose a little down low , I already have an Rk sport hood ,Ecs novi 2k , 18lbs of boost & 403 ,it should make if nothing else the under the hood bling look a lil better
This one is 9 inches from the bottom of the valley & comes with the 102 mm Tb opening

5 Liter Eater

If I found a low rise one that would fit under the hood for ~five bills I would jump on it.

Unreal

Chinese ls3 knock off cheapo warped flange blow out the weld ones are hitting ebay. So if you have ls3 style heads they should be available. Reports of at least 1 blowing the rear out are already out there. Plus having to have all the flanges milled so they would seal since they were so warped out of the box.

Nope, won't touch that crap. My motor isn't worth it.

croatbob

plus shorter runners means less low down torque.if i was to go any manifold it would be like the holley out the hood with the longer runners or the manifold with elbow setup.

FN FAST

what forced induction car is lacking torque?

Unreal

I wouldn't mind losing some low end. 600-800ftlbs <4k rpm doesn't help, just spins tires. If I can give up some low end for 4k+ power I'll do that all day.

neverstop

Wasn't sinister making 1,500whp on stock Ls7 intake? when I saw him do that it sealed the deal for me that I probably will never need aftermarket intake. I think Arun went 8s at >160 on a stock LS6 intake and tb too!

seems like many other places I can waste money on my car with more hp return.....

shoot, for $1k I could buy stand alone and spray 100 shot on it and help with IATs too.

Unreal

Stock ls3 intake I thought.

neverstop

I could be wrong as this thread is about 138546354412 pages long....lol. But if Ls3 then I'd assume Ls7 is even better for big hp so should be even less restriction. I'm not the best big hp expert here but from what I've seen no reason to upgrade intake mani or tb until well past 1,100whp

realcanuk

C5mtl went 8.82@15? on a stock LS6 intake and TB. I will also spend the money elsewhere.

Blackonblacksls

Stock doesnt look this ****ing cool