Better Than Original
Got a 2005 Tahoe 5.7 Vortec. The factory originals gave out at 130,000 mi. Replaced them with the Fel-Pro Plastic version because of the very common "mystery" coolant leak. That solved the problem for about 5 years. Couple of months ago and now 220,000 mi. The low coolant level problem was back along with a rough idle and oil fouled plugs. I was pretty sure that the intake gaskets had gave way again. I had heard about the new Fel-Pro upgraded version, so I ordered a set. I had already pulled the Intake off to do the cleaning and inspection etc. Sure enough the plastic gaskets were toast. Plastic and rubber separation everywhere. Leaking coolant into the back 2 cylinders, and, check this out...
It was pulling oil from the lifter valley into the other cylinders, and fouling the plugs. The Intake runners had a lot of oil in them. I new that I had found the problem. As soon as you see the new up-graded Fel-Pro gaskets you will know that you made the right choice in spending the extra money. GET-EM!! Don't waste your money or time by getting the plastic ones. These look like they will last forever. This is to big of a job to be worrying about an extra $20.00. All of the extra gaskets and sealant are included in the kit. Good instructions included, Can be done in about 5-6 hrs. If you are moderate wrencher. My job came out perfect, Good Luck!!!