Intake Gaskets Questions
Thread Starter
Pro
Joined: Oct 2004
Posts: 628
Likes: 6
Intake Gaskets Questions
1992 Supercharged LT-1.. or is it an LT-4? As some of you know I have suspect head gasket problems so I am tearing down the engine.
However - I found today that the engine has LT-4 heads and also an LT-4 intake. When I removed the intake I found extensive evidence of oil entry into the intake ports for cylinders 5,7 and 2. Whoever put it together used double intake gaskets - and all sides of all gaskets were coated with oil. There is no evidence of any RTV used on the gasket surfaces.
Here's a couple of questions:
1. Are LT-1 and LT-4 gaskets the same?
2. Will it be a safe bet to use GM racing gaskets (or Felpro) with some RTV or 'the right stuff' - has anyone had luck with that combination?
3. Given that this is a boosted engine (12psi) - is there an alternative recommendation (metal gaskets etc).
Thanks for your help,
Andy.
However - I found today that the engine has LT-4 heads and also an LT-4 intake. When I removed the intake I found extensive evidence of oil entry into the intake ports for cylinders 5,7 and 2. Whoever put it together used double intake gaskets - and all sides of all gaskets were coated with oil. There is no evidence of any RTV used on the gasket surfaces.
Here's a couple of questions:
1. Are LT-1 and LT-4 gaskets the same?
2. Will it be a safe bet to use GM racing gaskets (or Felpro) with some RTV or 'the right stuff' - has anyone had luck with that combination?
3. Given that this is a boosted engine (12psi) - is there an alternative recommendation (metal gaskets etc).
Thanks for your help,
Andy.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
As the LT4 ports are raised from LT1 reasonable to suspect a different gasket needed
Interesting info
www.grandsportregistry.com/lt1vslt4.htm
Interesting info
www.grandsportregistry.com/lt1vslt4.htm
