I have always used the what ever gasket on my cars & trucks . Some heaved leaked and some have not . I have shorty flow-techs on my car now with aluminum heads (my first pair of aluminum heads ), and want to install a good gasket . What are your opinions on all types of gaskets aluminum , copper ,fiber , and did you use gasket sealer . Post up part numbers prices and what you think of them .

I used a set of Earls aluminum header gaskets when I couldnt get mine to seal. They havent leaked since.

I've always used Felpro's and Stage 8 locking header bolts. Never had any issues. I would check the trueness on those flanges before installing. Flowtechs are budget headers and there quality kind of sucks.

Thanks guys . I am in the process of installing a new motor . The flow-techs did not leak on my old motor . I am just ordering up all the stuff for the install , and want to put a quality gasket in .

The very best gasket is a laminated aluminum gasket w/locking fastners. You'll never be sorry you spent the extra I promise!!!! Percy's seal for goods are one version, Mr. Gasket makes them as well... Laminated Aluminum I say!!!!

I installed a set of Remflex gaskets on recommendation of my local West Bay Auto Parts (local to Kitsap County WA), which is now a NAPA store. You can crush them up to 50% to make a seal. I haven't had to touch my header bolts yet.

Have to be very careful when taking them out of the package and installing as they are fragile.

http://www.remflex.com/

Thank you I got this just before I put my order in at summit . I almost bought copper ones . Got the seal for goods and Percy's lock bolts

I have always had the best luck with a set of felpro manifold gaskets. trim the gasket to fit the header or head opening (if need be) put a slight coat of the red exhaust RTV (header side) and use a good locking bolt. I have never had a problem with this and it is alot cheaper.

I would try Mr. Gasket ultraseal just because they are way cheaper than aluminum or copper and i have never had them leak on cast or aluminum. Although copper from what i hear is one of the best materials to use their just freakin expensive