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iTrader: (6)

After much deliberation on my exhaust system, I have finally decided to install LPP (LaMonte Performance Parts) long tubes and true duals. I know some people have had fitment issues with those headers, but for the price and the fact that the whole system will be stainless, it's worth the risk. Plus I plan on installing Spohn solid motor mounts at the same time so fitment shouldn't be a problem, hopefully. First off here is some info about this system from Carl at LPP. I e-mailed him some questions, here are his answers

So, here's the list:
1. long tube headers
2. LPP true duals
3. o2 extenders
4. AIR removal (headers are race style so no block off plates needed, but I guess there is a vacuum line that needs plugged up?)
5. Spohn solid motor mounts
6. GM exhaust gaskets (what sponsors sell these, and should I buy them or reuse old ones?)
7. Stage 8 locking header bolts (same question as last)
8. Dyno tune plus AIR and catalytic converter codes removed from computer

Am I missing anything? My car has 30,000 miles so I wasn't planning on replacing the spark plugs, but should I? Thanks

Z28_LT1

iTrader: (2)

You're going to need a muffler.

X-ray

iTrader: (6)

HAHA. That's included with the x-pipe, guess I should have been more specific. Actually they're resonators.

ds98formula

iTrader: (3)

Yes change pluges its so easy with the headers out. You have to remove them anyway so you might as well just go ahead.

skopers3

iTrader: (3)

I'd buy all new gaskets. It's way easier to change them when you're doing a header install then to wait and need them in 5,000 miles. And depending on your budget, a lot of people recommend getting Corvette rear O2s to use instead of just the extensions, but then you're looking at another $140. Your call on how much you want to do.

Aetos

iTrader: (4)

I installed LPP LT and duals a couple of months ago and you have exactly what I bought for the install, except I didn't get a tune and I also reused the stock header bolts. Do yourself a favor and use some anti-seize on the bolts too. Also, just to prevent any sort of leaks, I use silicone between the clamps and the exhaust pipe to make sure there is a perfect seal.

No AIR block plate is required when using non-emission headers. The AIR pump sucks air and pushes it directly into the headers. No vacuum tubes.

skopers3

iTrader: (3)

If I remember correctly, Only 2000s will require plugging a vacum line that goes to the back of the intake manifold. I just used a screw to plug it on mine.

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iTrader: (6)

Did you just use the provided hangers and clamps, or did you buy stainless clamps from someone else? I thought I remember reading somewhere on this site about buying different clamps than what LPP provides.

Also, how much vibrations did the solid motor mounts give you? I read they're not that bad, and you can only really feel it if your revs drop low when starting in 1st gear. I'm pretty sure I'm doing the solid MM though.

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iTrader: (6)

Maybe I got that idea if I was reading an AIR removal thread for a 2000.

Aetos

iTrader: (4)

I used separate hangers because they never shipped me hangers I'm trying to get the right hangers from them though. I used the clamps they sent me.

The solid motor mounts are awesome, I don't regret them one bit. Wherever you read that is true(was probably from me); vibrations are really only noticeable at low rpm/very slow launches. It does add a small vibrations/massage feeling on the seats, but I personally love that feeling.


cam + solid motor mounts + girl in passenger seat =

You have to run your car open headers at least once, even if only at idle

Why would the 2000s require blocking a port? Don't the all the ls6/ls1 manifolds have the same ports and hoses except for the EGR? I find it weird that GM would create a special intake/hose and a different AIR system just for the 2000 cars? I could be completely wrong though.

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iTrader: (6)

I'm not sure exactly what parts it is, but I'm sure I remember reading that 2000 is an oddball year.

I found NGK TR55 spark plugs, 8 of them shipped from rockauto for $18 so I'm definitely adding that to my list, I didn't realize how cheap they were.

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iTrader: (6)

Just put my orders through for LPP headers and x-pipe, Spohn solid MM, 24" o2 extensions, GM exhaust gaskets, and 8 NGK TR55 spark plugs. I'm gonna skip header bolts and reuse mine. I don't even feel like adding the different orders up.

I'll post a new thread once the install is done, which could be awhile. Everything's gotta get here first. I hate waiting on my baby

LeftySS

iTrader: (17)

You will definately want different clamps. I have the LPP LTs and TDs, it leaks like crazy with their clamps. I actually had my system welded up except at the header and where the mufflers clamp to. I got the accuseal clamps, they work lots better. You can also slit the ends of the pipes so they will clamp down better. I ended up changing out my mufflers to, the interior noise was too much for me to handle. Got some Borla ProXS and they bolt right up with a little change to the muffler hangers. Pretty straight forward swap.

MTBSully

iTrader: (7)

cool stuff man. What is everyone using for clamps? I was thinking when i get my Y pipe i will just get a bunch of 3" band clamps from Jegs

NVR_SPDS

iTrader: (39)

I love Rockauto!! I got all 4 gatorback belts for both our WS.6s for about 80.00!

Looks like you got the list about covered.. I dont know how thick the header flanges are, but make damn sure your bolts arent bottoming in the holes. I know when i bought my car with pacesetters, most of the bolts bottomed out, and i had exhaust leaks all over the place.

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iTrader: (6)

I texted the guy who will be doing the install about header bolts and he said "prob should get them the heads on the old ones will probably be too big". Not sure what that means but I guess I will be buying header bolts.

As for the clamps, I'm going to wait until I get the system and check everything out. All good info here, I don't know what I'd do without this site. Probably drive my car around stock forever

Edit: I just bought Gardner Westcott GAR-56406-HSP Header Bolts, Hex Head, Stainless Steel, Polished, 8mm x 1.25, Chevy, 5.7, 6.0L, LS1, LS6, Set of 12

$18 shipped from Summit. They should work fine, hopefully.

Edit 2: I just checked my e-mail and I see LPP sent me the $50 refund to my credit card, which is what they say they do on their website. So, $825 shipped for an all stainless exhaust

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iTrader: (6)

Looking good, wait, UH OH! A dented primary. The guy installing it said he should be able to tap it out. I'd much prefer that over trying to return it and getting it repaired or having it replaced

Hard Core Z28

Return them, you should not have to fix a dented header.

Bryceslu

iTrader: (4)

Thats the way they are made my friend. have seen this on previous owners threads and have the same dame thing on my set. Someone else had posted that Carl said it has something to do with the way they make em.

imo LPP is **** with absolutely no quality control and the cust service is a joke. Carl doesnt stand behind his product at all and his approach is tough ****.

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iTrader: (6)

Really, so every set has that dent? I know I didn't hear great things about their quality or customer service, but I took a gamble since the price was good for an all stainless system.