Header Gasket Selection

[Andy Durrett]

Hey guys. I am having trouble finding header gaskets that I think will work. The gaskets that came with the headers only had about 1/8” of gasket seal and were on the verge of leaking. I am using 781 heads that measure about 1.75”x1.75” on the exhaust port dimensions. I want the most gasket seal possible without risk of exhaust leaks and without having to modify my headers. I would prefer to use an off-the-shelf gasket for easy replacement in the future. If I can’t find gaskets, I will have to start with a round port gasket and trim it to the port dimensions. Please recommend good gaskets also. Thanks

 

[Grumpy]

https://www.summitracing.com/parts/sum-111410/overview/make/chevrolet


Brand:Summit Racing

Manufacturer's Part Number:SUM-111410

Part Type:Exhaust Header and Manifold Gaskets

Product Line:Summit Racing® Copper Exhaust Gaskets

Summit Racing Part Number:SUM-111410

UPC:190861057784

Port Style:Square port

Gasket Material:Copper

Port Height (in):1.750 in.

Port Width (in):1.750 in.

Thickness (in):0.042 in.

Quantity:Sold as a pair.

reading related links seldom/never hurts your results
Ive used several sets of BBC copper header gaskets,
on my and friends cars with good results
some are now over 15 years old
http://garage.grumpysperformance.co...lap-on-factory-headers.3155/page-2#post-63298

http://garage.grumpysperformance.com/index.php?threads/what-header-gaskets.3107/

http://garage.grumpysperformance.com/index.php?threads/header-bolts.559/