Intake leak

[Fireguyfire]

With some help from you guys, I was able to fire up my 440 today after dropping it back into my 70 300.
With it idling I immediately noticed I have an exhaust leak around the choke we’ll cover.
Can anyone recommend a product I can use to seal it up correctly?
I’m guessing a high temp permeate. Would work?

 

[Davea Lux]

You need to remove the pot from the intake. I has a gasket that has probably failed.

Dave

 

[Fireguyfire]

For sure, the reading I’ve done it sounds like the gaskets are hard to find and expensive; high temp silicone is recommended but I’d rather know that from someone that has used a product, and it has worked well for them.

 

[CBODY67]

Some asbestos, cut to shape, can probably work? Or a thin bead of J-B Weld? High-heat red silicone used to be acceptable to some dirt track racers for header gaskets, as I recall.

 

[Davea Lux]

www.manciniracing.com has the gaskets for big blocks at @ $10.95 in the restoration parts.

Dave

 

[cbarge]

If you are running an electric choke,pull the intake and plug the heat crossover passages and replace intake gasket.
Done.

 

[413]

Orange hi temp silicone will seal it. Unless the gasket is really falling apart. Then get a new one.

I don’t recommend Plugging the heat crossover on A stock-ish engine. Will run bad in cold weather. Need the heat for fuel atomization

 

[413]

New gasket if needed

Choke Well Gasket 1970-72 V8, Carburetor Choke, 101-1545 Reproduction, NOS and Used Mopar Muscle Car Parts