Intake gasket question

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Feb 9, 2009 | 08:16 PM

dmayhew

Thread Starter

Drifting

Joined: Oct 2007

Posts: 1,254

Likes: 5

From: Brown Summit North Carolina

Intake gasket question

I would like to know how many of you use the rubber front and rear intake gaskets and how may use just a RTV type sealant only.

I am workinh on a 350 with aluminum intake.

Thanks
David

Feb 9, 2009 | 08:29 PM

C3 Stroker

Safety Car

Joined: Oct 2004

Posts: 3,926

Likes: 739

From: Youngstown Ohio

I always just use a bead of RTV type sealant.......never leaks. I used the intake gaskets once (years ago) and it soon leaked ......maybe others have had better luck with them.

Feb 9, 2009 | 08:31 PM

Gordonm

Race Director

Joined: Dec 1999

Posts: 19,610

Likes: 778

From: Forked River NJ

Large bead of RTV here. No leaks in many engines built this way.

Feb 9, 2009 | 08:35 PM

tnovot

Racer

Joined: Feb 2008

Posts: 497

Likes: 0

From: Streator Illinois

I also used the rubber gaskets for front and rear seals several years ago. Never again. Have used RTV since with great success.
Terry

Feb 9, 2009 | 08:45 PM

dmayhew

Thread Starter

Drifting

Joined: Oct 2007

Posts: 1,254

Likes: 5

From: Brown Summit North Carolina

Thanks to all

3 for 3 , do not use the gaskets

Thanks
David

Feb 11, 2009 | 06:57 PM

straub18045

Racer

Joined: Jun 2006

Posts: 476

Likes: 0

From: Easton PA

good bead of gms (general motor silicone) available at your local gm parts counter

Feb 11, 2009 | 07:14 PM

hgm

Instructor

Joined: Dec 2005

Posts: 121

Likes: 2

From: Middletown Delaware

Always use Silicone

Feb 11, 2009 | 11:53 PM

71coupe454

Burning Brakes

Joined: Jan 2009

Posts: 1,224

Likes: 1

From: Clarksville Indiana

maybe 10 years or ago I tried useing the seals and the pushed out when I tigntened the intake bolts down. I glued them down with yellow weather strip adhesive first then put the intake on. still in there and still leak free.. bubba got lucky? I didnt know then I could leave then out.

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Feb 12, 2009 | 01:14 PM

Jeff_Keryk

Drifting

Joined: Feb 2005

Posts: 1,879

Likes: 38

From: Los Gatos CA

Do a dry fit with the port gaskets only. Visually check the front and rear mating surfaces. As long as the surfaces align (and they should!) silicone is your best choice. I had a problem on a 65 Olds 400 with an Edel Performer (rear mating surfaces did not align correctly) that required using the rubber end seals and silicone, but never on a Chevy.