[jimsl78]

I want a good quality intake manifold gasket set for my 396, it has rectangular port "840" heads.
When checking Summit for available gaskets, 90% of them are about .060" and a few are .120". When would some one need a thicker gasket? Maybe to compensate for machining / decking? I'm thinking to just order the most common one. Any thought's on this one? CHEVROLET Fel-Pro 1211S3 Fel-Pro Intake Manifold Gaskets | Summit Racing

 

[rp930]

I would use the standard 1275. The Printoseal ones get brittle with heat.

 

[jimsl78]

I don't think the 1275 would fit, they don't have provisions for the extra two intake bolts centered and above the ports?

 

[rp930]

MS 90005 should do it.