Ls6 manifold

**WS SIX** · 01-27-2013, 09:15 AM

hi I have a 2000 ws6 anyways I'm looking to buy a ls6 manifold. If I purchase just the manifold will my fuel injectors and throttle body and everything work with the ls6 manifold or will I have to make adjustments. Please if you can let me know what adjustments need to be made or whether it would for right in with no changes if appreciate it thanks!

**2002ssslp** · 01-27-2013, 02:49 PM

Everything should bolt right up to the LS6 manifold. It is the same piece as the LS1 except for the bottom of the manifold and the PCV system. You will need to reroute the PCV system.

**WS SIX** · 01-27-2013, 02:59 PM

Originally Posted by 2002ssslp

Everything should bolt right up to the LS6 manifold. It is the same piece as the LS1 except for the bottom of the manifold and the PCV system. You will need to reroute the PCV system.

Is rerouting the PCV system easy and do i need any additional parts? thanks

***SMWS6TA*** · 01-28-2013, 07:26 AM

PCV - No need to reroute it, It will connect the same way and lay along the passenger side the same.

Intake - you have 2 options when dealing with the coolant crossover tube that is under the intake.

Opt 1: Carefully using a Dremel grind off the fins that are on the bottom of the intake. This lets you keep the LS1 style crossover tubes.

Opt 2: It used to be called the LS6 coolant crossover kit. Goes for $65 (wow that went up!!), I would have to pm your the site because it's a non-sponsor.

Either option you choose I also strongly suggest that you update the knock sensors while you are here. They are due and its as good of a time as any.

**pajeff02** · 01-30-2013, 06:11 PM

Agree. May as well swap them out while things are apart. Careful of the oil pressure sender as lots of them get broken during intake swaps.

**WS6 MANN** · 02-02-2013, 11:31 AM

Does anybody know if those fast intakes are good and are they really WORTH $1000 or would you just but a ls6 manifold for like $400. Also whats the difference between the 102mm ones and like the 92mm.

**98TransAmWs-6** · 02-02-2013, 12:47 PM

Originally Posted by WS6 MANN

Does anybody know if those fast intakes are good and are they really WORTH $1000 or would you just but a ls6 manifold for like $400. Also whats the difference between the 102mm ones and like the 92mm.

I personally wouldn't bother with a ls6 unless your plans are to stay pretty mild or it isn't in the budget. The difference between the FAST 92 and the 102 is the open is 92mm and 102mm respectively. I own a FAST 102.

**WS6 MANN** · 02-02-2013, 07:31 PM

Originally Posted by 98TransAmWs-6

I personally wouldn't bother with a ls6 unless your plans are to stay pretty mild or it isn't in the budget. The difference between the FAST 92 and the 102 is the open is 92mm and 102mm respectively. I own a FAST 102.

Well a thousand dollars for an intake is kinda steep lol. Anyways full exhaust and Long tubes was my plans thanks!

**98TransAmWs-6** · 02-02-2013, 10:12 PM

Originally Posted by WS6 MANN

Originally Posted by 98TransAmWs-6

I personally wouldn't bother with a ls6 unless your plans are to stay pretty mild or it isn't in the budget. The difference between the FAST 92 and the 102 is the open is 92mm and 102mm respectively. I own a FAST 102.

Well a thousand dollars for an intake is kinda steep lol. Anyways full exhaust and Long tubes was my plans thanks!

I only paid $823 for mine shipped from Maryland Speed. I would definitely do exhaust before you think about a FAST.

**WS6 MANN** · 02-03-2013, 10:35 PM

ls6 rated at a 15+ horsepower gain, how much is the FAST? THANKS[/BLUR]

Originally Posted by 98TransAmWs-6

I only paid $823 for mine shipped from Maryland Speed. I would definitely do exhaust before you think about a FAST.

**pajeff02** · 02-04-2013, 03:42 AM

Seriously, I think the FAST intake needs combined with at least headers and a new throttle body to take advantage of its better flow characteristics. Add a new bump stick and then you would realize its full benefits. Yes, the intake alone is better than what you have from the factory, but it is one of those add ons that just begs for more money to be spent. Just my .02 on the matter.

***SMWS6TA*** · 02-04-2013, 07:03 AM

Originally Posted by WS6 MANN

ls6 rated at a 15+ horsepower gain, how much is the FAST? THANKS[/BLUR]

Originally Posted by pajeff02

Seriously, I think the FAST intake needs combined with at least headers and a new throttle body to take advantage of its better flow characteristics. Add a new bump stick and then you would realize its full benefits. Yes, the intake alone is better than what you have from the factory, but it is one of those add ons that just begs for more money to be spent. Just my .02 on the matter.

^
add on to what Jeff said. Unless you are into serious track/racing having a FAST 90 or 102 is a little overkill for minimum track use or week end cruises. LS6 intake is the best bank for the money for mild bolt on's.

With the FAST it's not just the intake that you need to factor cost for. Tuning, fuel injectors, throttle body need to be included.

HP gains - a lot of varibles here, A FAST will get you the most gains just short of force induction. However it needs other things like cam, good set of heads and exhaust in addition to the other things I mention.

**WS6 MANN** · 02-07-2013, 01:24 PM

ANyone selling a ls6 manifold??

**35th-ANV-SS** · 02-07-2013, 02:08 PM

Look on ebay, Craigslist or the parts for sale section on this site. Can try calling local junkyards too.

**WS SIX** · 02-08-2013, 03:03 PM

Originally Posted by 35th-ANV-SS

Look on ebay, Craigslist or the parts for sale section on this site. Can try calling local junkyards too.

Hi would you get a ls6 manifold from a wrecked car do u think it will be fine? How would you inspect it ?

**35th-ANV-SS** · 02-08-2013, 04:34 PM

As long as everything checked out on it, sure. It's in the middle of the engine up high, so depending on where or how the car was wrecked, most likely it would be fine I would think. There really isn't too much to the design of the intake. It's just a plastic piece from an injection molding. Not sure what it's made of exactly, but I'm thinking ABS plastic or similar, which is pretty strong material. I would inspect it for cracks. I would think any damage to one would be very noticeable though.

**pajeff02** · 02-09-2013, 03:56 AM

Agree. Uness you see visible cracks, or melted areas if the donor car suffered an engine bay fire, you should be good to go. Maybe inspect the MAP port at the rear of the manifold and the threaded inserts to ensure that none of them are bunged up.

**WS6 MANN** · 02-11-2013, 12:06 PM

Hey guys i just picked up an ls6 manifold the bottom has been modded to which the water tubes dont have to be changed making the installation easier... Do you guys know if i need the new gaskets or the new bolts for the install or will my ls1 manifold ones work, im going to get new gasket seals tho. thx

**transamtom** · 02-11-2013, 01:32 PM

Originally Posted by WS6 MANN

Hey guys i just picked up an ls6 manifold the bottom has been modded to which the water tubes dont have to be changed making the installation easier... Do you guys know if i need the new gaskets or the new bolts for the install or will my ls1 manifold ones work, im going to get new gasket seals tho. thx

Yes get new gaskets,your LS1 bolts are fine but be careful not to overtighten them.

You might also want to change your knock sensors and harness and your OPSU as well use GM parts you don't want to do it twice.

Pick up an OPSU socket from a parts store they are about $8-10

**transamtom** · 02-11-2013, 01:35 PM

BTW get 8 old socks a few rags and a couple cans of brake cleaner to clean your mess up,and change your oil and filter when your done.

Get about 8 feet of 3/8 neoprene hose to fix your clapped out PCV system to.