best intake manifold for the money?

**346lsi** · 10-09-2007, 04:26 PM

anybody have any suggestions on purchasing intake manifold need some
advice

**JonB** · 10-09-2007, 05:04 PM

Since you have a 98 I would suggest the ls6 manifold. If you plan on doing a heads/cam build up then you can just get the FAST manifold.

**INMY01TA** · 10-09-2007, 05:40 PM

Yep LS6 great for the money.

**SteelmanLS1** · 10-09-2007, 06:16 PM

Originally Posted by INMY01TA

Yep LS6 great for the money.

Not to Thread jack.. but how can you confirm its a actual LS6 intake? What is the 8 digit casting number?

**sunsetorangess** · 10-09-2007, 06:35 PM

I would recommend a ls6 intake manifold.
Theres a few ways to determine the ls6 from the ls1.
On vehicle- Look between the valley plate and the bottom of the intake
ls1= wing shapped floor
ls6= Flat floor.
Off the the vehicle the easiest way is the ls6 intake has "square ribbing" on the bottom of the intake and the ls1 has "x" ribbing on the bottom of the intake. Also the ls6 doesnt have the whole egr deal.
J

**splitfinger09** · 10-09-2007, 06:37 PM

Originally Posted by SteelmanLS1

Not to Thread jack.. but how can you confirm its a actual LS6 intake? What is the 8 digit casting number?

You can always look at the bottom of the intake. LS6 will be flat, while the LS1 wont. Check out this pic, the one on the right is an LS6 intake http://www.ls1howto.com/howto/geniii...//IMAGE009.jpg

**oz304** · 10-11-2007, 10:46 PM

for an a4 and hway gears has to be ls6 for sure cammed or uncammed.

sereis 1 ls6 p/n 12561182-84?
sereis11 ls6 p/n 12573572

**346lsi** · 10-12-2007, 03:50 PM

well i already have an ls6 and my car has heads and ms3 cam i didnt know if the fast
was worth the money compared to wieand or bbk

**JonB** · 10-12-2007, 05:25 PM

Originally Posted by 346lsi

well i already have an ls6 and my car has heads and ms3 cam i didnt know if the fast
was worth the money compared to wieand or bbk

The fast out of the box is a far suprerior manifold compared to the wieand and bbk. The ls6 flow damn near as good as the wiend and bbk out of the box. Both the wieand and bbk can be ported to flow closer to the fast. If I had to put money towards and intake my money would be with the fast. Its not the best bang for the buck but once you get a h/c setup it becomes a little more worth it vs a mild bolt on car.

**Websy21** · 10-12-2007, 05:48 PM

Originally Posted by JonB

The fast out of the box is a far suprerior manifold compared to the wieand and bbk. The ls6 flow damn near as good as the wiend and bbk out of the box. Both the wieand and bbk can be ported to flow closer to the fast. If I had to put money towards and intake my money would be with the fast. Its not the best bang for the buck but once you get a h/c setup it becomes a little more worth it vs a mild bolt on car.

I agree but the only way I'd get a fast is the 90mm obvioulsy and it would be ported otherwise stay with the LS6 and don't waste your money. FI go with LS6 and N/A with ported heads and matched cam go with Fast 90/90. By the way, Bob at EPP even reccommends going with the LS6 wtih FI applications. That is whats gonna be feeding my 408/turbo, just my .02

**Hamrhead** · 10-13-2007, 08:15 PM

A fast 90 and 90mm TB would be best for a stout H/C car. If you ever plan on FI though I would stay away from the Fast. The LS6 is good for FI and decent for H/C setups just not quite as good as the fast. The fast 78mm is a waste of $$$$

**SSwt00SS** · 10-13-2007, 08:34 PM

Ls6 is good for a non H/C car...

FAST 90/90 ported is the way to go w a H/C car...

i personally same a 35rwhp/10rwtq gain from swapping from an Ls6 intake to my ported FAST 90/90...

**xirxious** · 10-29-2007, 12:01 PM

is H/C head/cammed?

**SSwt00SS** · 10-29-2007, 12:28 PM

that is correct...

H/C/I/E:

heads/cam/intake/exhaust

basically bolt-ons as they are more commonly called...

**xirxious** · 10-29-2007, 05:55 PM

Does the fast 90mm intake/TB require more tuning or does it just plug and play? I moved to a new area and don't know any reps of local tuning outfits...

**SSwt00SS** · 10-29-2007, 06:30 PM

yes the FAST 90/90 is plug and go, ,but to fully maximize the potiental of the intake with any other mods that you might have done as well, its is very wise to get the car tuned...

its like seeing a great pair of tits through the window but not being able to touch them, it's a tease for what you could have your hands on, so why tease the car by not tuning it...

**xirxious** · 10-30-2007, 10:29 AM

It was more for not worrying about doing it now, maybe over the winter sometime.

**nhraformula** · 10-30-2007, 02:57 PM

fast is the way to go for you. instal it and worry about tuning later

**xirxious** · 11-01-2007, 08:04 PM

ok, is FI Factory Induction? I'm looking at doing an intake first and doing a head/cam kit over the winter and have been reading up on these threads. I'd like to d true duals, but want to look into the emission laws first. I'll do it, I just want to get around getting caught