Review on 🔧 SBC 283 305 327 350 383 400 Silicone Valve Cover Gasket - 7484BOX by Roel Lebron

Customize a 74 GMC truck with a 350 in it. I had high hopes for her. Don't over-tighten or under-tighten and even use an extra long clamp. A few days later I saw oil puddles under my car. So they reappeared and I put them on the cover of RTV and brought them back the other day. I blame myself, I should have just bought cheap soft FelPro and they would have lived fine for another 10 years. The material is not soft, barely left a mark on the gasket so I don't see how they would actually seal the rougher cast iron head edge so well. They may work better on machined surfaces and smooth aluminum covers, but not on older engines. with sheet metal covers. And this is the first time I've had lids leaking after replacing gaskets.