LT-4 intake gaskets DISCONTINUED?

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Sep 29, 2019 | 03:38 PM

lt4 coupe

Thread Starter

Racer

Joined: Jul 2016

Posts: 299

Likes: 15

LT-4 intake gaskets DISCONTINUED?

The machine shop apparently gave me an LT-1 intake set (Fel-Pro MS 96386) and now im apparently screwed as my searches led to 2 LT-4 part numbers 12527777 and 12528884. The 7777 apparently was problematic and the 8884 is showing discontinued?

Now what?

This isn't going to work:

Sep 29, 2019 | 04:33 PM

gdl2165

Pro

Joined: Oct 2012

Posts: 580

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From: Grapevine TX

It looks like the part number may have changed to 12367777

https://www.jegs.com/i/Chevrolet-Per...67777/10002/-1

Sep 29, 2019 | 04:59 PM

lt4 coupe

Thread Starter

Racer

Joined: Jul 2016

Posts: 299

Likes: 15

Quote:

Originally Posted by gdl2165

It looks like the part number may have changed to 12367777

https://www.jegs.com/i/Chevrolet-Per...67777/10002/-1

I don't think it was changed, they were both available at one time at least and people warned against the, "7777", take a look:

Sep 29, 2019 | 07:30 PM

blackbelt

Drifting

Joined: Apr 2001

Posts: 1,936

Likes: 9

From: Menifee California

I was advised by Lloyd Elliot to use the 7777 gasket on my AFR LT4 blower build set up. I trust his opinion

Sep 29, 2019 | 07:40 PM

lt4 coupe

Thread Starter

Racer

Joined: Jul 2016

Posts: 299

Likes: 15

Quote:

Originally Posted by blackbelt

I was advised by Lloyd Elliot to use the 7777 gasket on my AFR LT4 blower build set up. I trust his opinion

Good enough for me, I'll order a set up first thing tomorrow...

Sep 29, 2019 | 09:25 PM

cv67

Team Owner

Joined: Oct 2004

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From: altered state

St. Jude Donor '05

Can you use a 1206/1255 and fudge bolt holes?

Sep 29, 2019 | 11:23 PM

dizwiz24

Race Director

Joined: Sep 2001

Posts: 14,676

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From: NEwhere Ohio

From what i remember, fel-pro’s performance line of gasket (with the blue outlines) fit the intakes WORSE than their regular line of intake gaskets.

Sep 30, 2019 | 01:16 AM

James93LT1

Drifting

Joined: Oct 2004

Posts: 1,477

Likes: 80

From: Hawaii

Would the felpro 1284 work? Its listed for the LT4.

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Sep 30, 2019 | 03:05 AM

lt4 coupe

Thread Starter

Racer

Joined: Jul 2016

Posts: 299

Likes: 15

Quote:

Originally Posted by James93LT1

Would the felpro 1284 work? Its listed for the LT4.

Listed as LT-1

Sep 30, 2019 | 05:08 AM

#10

grandspt

Drifting

Joined: Jul 2004

Posts: 1,354

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From: MA

Quote:

Originally Posted by lt4 coupe

I used the FelPro 96386 on my last intake manifold gasket replacement job. They do list them as LT4 only. The gaskets that were originally on there didn't fit much better. And they were badly oil soaked!!
Also the FelPro kit gives you an egr gasket which is worthless on an LT4. They should have given the air tube gasket instead. I called FelPro customer service about the fitment issue and the egr gasket issue. They were clueless.
By the way at the time I couldn't find the 7777 gaskets. But it looks like Summit Racing has them.
However my car is running well with the FelPro gaskets.

Last edited by grandspt; Sep 30, 2019 at 05:14 AM.

Sep 30, 2019 | 10:29 AM

#11

RichS

Le Mans Master

Joined: Aug 1999

Posts: 7,339

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From: WilkesBarre PA

I've always used the 7777 gasket without issues. Just bought a set from summit in Feb for my last rebuild?

Sep 30, 2019 | 12:56 PM

#12

lt4 coupe

Thread Starter

Racer

Joined: Jul 2016

Posts: 299

Likes: 15

Quote:

Originally Posted by RichS

I've always used the 7777 gasket without issues. Just bought a set from summit in Feb for my last rebuild?

Have you ever seen this 8884 gasket in person?

Sep 30, 2019 | 12:59 PM

#13

lt4 coupe

Thread Starter

Racer

Joined: Jul 2016

Posts: 299

Likes: 15

Quote:

Originally Posted by grandspt

Yours must have fit better than mine, I'd have a massive vacuum leak at every port!

Yeah the EGR gasket can still be used since there is a block off plate, at least on my car?

But im running slick long tubes anyways so don't need any other gaskets.

Sep 30, 2019 | 04:06 PM

#14

RichS

Le Mans Master

Joined: Aug 1999

Posts: 7,339

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From: WilkesBarre PA

Quote:

Originally Posted by lt4 coupe

Have you ever seen this 8884 gasket in person?

I used the 8884 gasket on a stock LT4 recently. Fit fine with no issues.

Sep 30, 2019 | 05:35 PM

#15

lt4 coupe

Thread Starter

Racer

Joined: Jul 2016

Posts: 299

Likes: 15

Quote:

Originally Posted by RichS

I used the 8884 gasket on a stock LT4 recently. Fit fine with no issues.

Which of the 2 do you prefer?

Where did you find the 8884?

Oct 1, 2019 | 09:38 AM

#16

RichS

Le Mans Master

Joined: Aug 1999

Posts: 7,339

Likes: 137

From: WilkesBarre PA

Quote:

Originally Posted by lt4 coupe

Which of the 2 do you prefer?

Where did you find the 8884?

I've used the "7777" with no issues numerous times. That's also what my intake it ported to, so that's the one always on my 397. I can't find where I got the felpro gasket but I thought it was Rockauto and was the felpro MS96386 which is the superseed for 12528884. I'd have to dig thru some receipts, I might have got it from Autozone. I've never had issues with Felpro.