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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 454Man on June 06, 2012, 08:48:19 pm

Title: Intake gasket port leak
Post by: 454Man on June 06, 2012, 08:48:19 pm

Ok so I search with no luck in finding the answer... the first time I pulled off my intake I noticed the air ports on the blue felpro gaskets were black at the bottom, so I know the. Felpro gaskets aren't thick enough at the bottom of the port. Heads were milled a little to make the surface flat and free from improfections... maybe to up the comp a tid bit not much. So what are my options for intake gaskets to that will seal better. I looked at summit and saw some thicker gaskets, but they didn't have the crossover port open. Any opinions appreciated:) I'm in no rush

Title: Re: Intake gasket port leak
Post by: bake74 on June 07, 2012, 06:39:03 am

      Did a machine shop do the milling ?  Are you sure they are not milled just a hair too much ?

Title: Re: Intake gasket port leak
Post by: 454Man on June 07, 2012, 08:20:16 am

Yeah I'm sure. Its just the typical port leak at the bottom of the ports..

Title: Re: Intake gasket port leak
Post by: rickyharp on June 08, 2012, 10:27:23 am

Sounds like to much was taken off.Felpro blue gaskets are not intended for aluminum intake manifolds because of leaks.

Title: Re: Intake gasket port leak
Post by: 454Man on June 08, 2012, 12:25:15 pm

I do have a summit racing intake... So what kind of gasket would be suggested?

Title: Re: Intake gasket port leak
Post by: rickyharp on June 08, 2012, 01:13:01 pm

Felpro makes a thicker gasket for the aluminum intake,I think it is gray in color not that it makes a difference.

Title: Re: Intake gasket port leak
Post by: 454Man on June 10, 2012, 05:11:08 pm

I haven't had much luck finding the part# for the intake gasket for aluminum intakes. Mine is a 350, any one know the part# to the correct gasket?

Title: Re: Intake gasket port leak
Post by: rickyharp on June 11, 2012, 10:26:10 am

I will try to get the part number for you sometime today.

Title: Re: Intake gasket port leak
Post by: 454Man on June 11, 2012, 12:31:18 pm

Thanks

Title: Re: Intake gasket port leak
Post by: rickyharp on June 13, 2012, 06:30:34 am

I have 3 part numbers for you,they are all from summit racing,edelbrock EDL-7201,EDL-7235,AND FEL-PRO-7235.I used the fel-pro set myself with good results.Hope this will help your leak problam.

Title: Re: Intake gasket port leak
Post by: 454Man on June 30, 2012, 11:04:24 am

Dang dude idk how I missed this. Thanks alot

Title: Intake gasket port leak
Post by: Korndiggity on June 30, 2012, 12:38:59 pm

Hey I just read somewhere that you aren't supposed to use the end seals on the I take gaskets. Just the port gaskets and rtv the ends. I am looking at the same thing, just don't feel like taking my intake off right now-

Title: Re: Intake gasket port leak
Post by: 454Man on June 30, 2012, 09:35:37 pm

Just took off my intake and am cleaning everything up.got the edelbrock intake gasket from my local oriellys gonna zip it all back up tonight and let it shot for a day

Title: Re: Intake gasket port leak
Post by: 454Man on July 01, 2012, 05:07:29 pm

Well all is good so far except the t stat housing cracked, so I ended up getting one with the o ring. I hear they leak, so I used some gray silicon to help. I also changed to a180° t stat. The surprising thing is the engine has gained 2in of vac when in idle and 1-1/2 in drive. Less pedal for accelleration aswell