intake manifold install
Thread Starter
Safety Car
Joined: Apr 2003
Posts: 3,864
Likes: 0
From: Stuck in Paradise
intake manifold install
I have a new intake manifold for my 03. 
I've been looking for instructions but haven't found any. Anyone know where I can find a good detailed instructions?
Also, to those who know how to do this, would you suggest this is something that should be done by a novice (me)?
I've been looking for instructions but haven't found any. Anyone know where I can find a good detailed instructions?
Also, to those who know how to do this, would you suggest this is something that should be done by a novice (me)?
Safety Car
Joined: Jun 2003
Posts: 4,509
Likes: 240
From: Coconut Creek FL
Originally Posted by CoastalRAP
I have a new intake manifold for my 03.
I've been looking for instructions but haven't found any. Anyone know where I can find a good detailed instructions?
Also, to those who know how to do this, would you suggest this is something that should be done by a novice (me)?
I've been looking for instructions but haven't found any. Anyone know where I can find a good detailed instructions?
Also, to those who know how to do this, would you suggest this is something that should be done by a novice (me)?
This should get you started...I think it was done on an F-Body but the installs are pretty similar-
Keep an eye on heat retention with those after market metal manifolds...from what I have read they can hold a lot of heat and detract from the horse power they provide...
good luck!
Le Mans Master
Joined: Feb 2000
Posts: 7,032
Likes: 2
From: Newburgh NY
Just a little extra info. If if Lingenfelter version of the weiand is the same as other versions, it does not use the O-rings to seal like other manifolds. They use a black paper gasket. If the intake is not set down correctly the first time, the paper can jam up under the intake and cause major vacuum leaks.
They are a pain to get the vacuum line and brake booster line (as well as the map sensor) in place correctly while you "slide" the manifold back into place. Just double check the gasket very carefully as you position the manifold if that's what it has. May want to even put a thin layer of rtv around the intake runners to hold the gasket in place as you position it.
Don't want to make you nervous, but giving you a heads-up.
They are a pain to get the vacuum line and brake booster line (as well as the map sensor) in place correctly while you "slide" the manifold back into place. Just double check the gasket very carefully as you position the manifold if that's what it has. May want to even put a thin layer of rtv around the intake runners to hold the gasket in place as you position it.
Don't want to make you nervous, but giving you a heads-up.
Thread Starter
Safety Car
Joined: Apr 2003
Posts: 3,864
Likes: 0
From: Stuck in Paradise
Thanks for the link and tips.
Someone told me that you had to drain the coolant for this but there was no mention of that in the instructions and it didn't look like he went anywhere near the coolant. So can I assume this guy was wrong, you don't drain the coolant??
Someone told me that you had to drain the coolant for this but there was no mention of that in the instructions and it didn't look like he went anywhere near the coolant. So can I assume this guy was wrong, you don't drain the coolant??
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
It's not really that hard if you have some mechanical experience. When I removed my intake, I was surprised how much dirt gets between the intake and the block since it does not sit directly down on the engine. Once the intake is off, carefully clean the area before proceeding. You don't want dirt in your cylinders.
Two tips. Make sure you install the rear two bolts before setting the intake back on the engine, you can't get them in afterwards. Secondly, I added a little extension to the rear vacuum tube. Made it alot easier to reinstall.
Good luck. BTW, I've heard the same thing about the heat of the aluminum manifolds, but they look awesome when installed.
Two tips. Make sure you install the rear two bolts before setting the intake back on the engine, you can't get them in afterwards. Secondly, I added a little extension to the rear vacuum tube. Made it alot easier to reinstall.
Good luck. BTW, I've heard the same thing about the heat of the aluminum manifolds, but they look awesome when installed.
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
One more suggestion. While changing the manifold, I would replace the oil pressure sensor. They go bad frequently, so put a new one in now instead of having to pull the manifold at a later date.
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Drifting
Joined: May 2005
Posts: 1,590
Likes: 1
From: Littleton Colorado
This link has some good C5 based photos, between this one and the ls1tech writeup you are fairly well covered. I did mine this past spring, it was not hard at all.
http://forums.corvetteforum.com/showthread.php?t=958008
http://forums.corvetteforum.com/showthread.php?t=958008
