Correct Intake Mainfold Gasket

[Donald H.]

Can someone who knows tell me which is correct for my 1960 carbureted car?

The first picture attached is off Corvette Centrals website and they say it is correct. The second is of an intake gasket that I bought in Carlisle and was told it is correct. Notice the tabs that are circled in blue.

The TIM & GJ says "Manifold side gaskets should ahve a small tab to the left side of the exhaust gas crossover on each side. These tabs are rectangular with rounded corners."

Was I misled from the vendor I bought the one in Carlisle from, and do I need to order another set?

Seems like CC, Paragon, and Zip all look the same with a rounded top to the tab.

Thanks,

[William C.]

Re: Correct Intake Mainfold Gasket

The picture shows a reproduction. The vertical rib is not present in the originals. Then there are the small "GM" logos molded into the end gaskets....

[Donald H.]

Re: Correct Intake Mainfold Gasket

Yes, I know they are reproductions. What I wanted to know is either better for judging. Right now I have a Felpro gasket that Isn't close. I didn't know if one of these reproductions would loose less points in judging.

[William C.]

Re: Correct Intake Mainfold Gasket

it would do better than the unmodified felpro. If I were you, I'd try to creatively remove the rib. I'd think an anvil and a suitable tool might help. Then all you need are the proper end gaskets.

[Patrick H.]

Re: Correct Intake Mainfold Gasket

The tab should be rounded like the CC photo, not square like the gasket you purchased. With a little creativity I think you can make this square tab into a round one. I'd put more effort into that than worrying about the rib, but that's just me.

Patrick

[Rod K.]

Re: Correct Intake Mainfold Gasket

Is there a source for the "GM" tabbed end seals?

[Gary C.]

Re: Correct Intake Mainfold Gasket

Here's what a 56-7 intake gasket "GM" tab looks like. Gary....

[Ronald L.]

Re: Correct Intake Mainfold Gasket

Gary P in Florida has them.

[Donald H.]

Re: Correct Intake Mainfold Gasket

Gary P in Florida has them.

I'll give him a call. That is who I bought the one I have with the square tabs from at Carlisle. Not sure why his are square if the correct is supposed to be round, but I will ask.

Don

[Ronald L.]

Re: Correct Intake Mainfold Gasket

I am referring to the end seals.

The side gaskets and how they need to be modified is a different topic which I believe you have suggestions on how to modify what you currently have.

[William C.]

Re: Correct Intake Mainfold Gasket

Square vs round on the side gaskets varies by year. I believe the JG for the respective years carries the correct description. I know the early solid axles were the rectangle, but don't have the changeover handy right now...

[Jerry C.]

Re: Correct Intake Mainfold Gasket

I am under the understanding that the original gaskets had the square end as shown in picture #2. This is how GM could tell if the intake had been removed from a car under warranty. I think Gary had just cut of the rounded tab. I do 58-60 cars and this is my understanding. I have several sets of the end gaskets with the GM tabs.

[Gene M.]

Re: Correct Intake Mainfold Gasket

Square vs round on the side gaskets varies by year. I believe the JG for the respective years carries the correct description. I know the early solid axles were the rectangle, but don't have the changeover handy right now...

Bill covered the configuration of the tabs on early cars. Rounded tab on mid years. But the offering in your photo is totally wrong. The originals DO NOT have the ribbing at tab as in the photo and will not fool a judge that knows the difference.

[William C.]

Re: Correct Intake Mainfold Gasket

I agree that square were used thru '60, but sometime after that the production versions went to round. I also owned an NOS set of GM gaskets in the old black and gold packages that had the square tab, so I'm less certain that the warranty issue rings true.

[Patrick H.]

Re: Correct Intake Mainfold Gasket

Square vs round on the side gaskets varies by year. I believe the JG for the respective years carries the correct description. I know the early solid axles were the rectangle, but don't have the changeover handy right now...

Noted.
I'm used to 63-and-up engines, at least with regard to the tabs.