which header gasket? ordering tomorrow

[orangemachine]

I need to order header gaskets tomorrow morning and I need to know the best ones I can get. I kept trying to get bassani's stainless steel ones but they don't make them anymore. I have mac LTs for my 00 GT 500 rwhp. Any recommondations on what and where to buy?

 

[superstang01]

ive heard alot of good things about felpro gaskets ( i think this is what there called ) hhaha

 

[screamin gt]

I used the ones that came with the ford racing headers, seem good so far, but motors stock besides heads

 

[orangemachine]

has anyone heard or used percy's seal - 4 - good gaskets? Any good?

 

[SilverBullet00]

They only way to go is the OEM gaskets you get at the dealership.

 

[hotmustang331]

Percys dead soft aluminum gaskets from summitracing.com . My turbo car has a TON of back pressure...roughly 20PSI+ on the exhaust system before the turbo. And I only had one side blow out after 10K....and well thats my fault.
Front bolt was about a 1/4 inch from the flange teh first time and 0 leaks (hows that for a good seal), so I just tightened it down and that was that. Then a few months later, the same header bolt loosened up AGAIN (+ another one next to it was also hand tight) and it started leaking. So I just replaced the gasket with the same kind.....it took ALOT of abuse and held up great.
Had I checked the bolts (not actuall header bolts) and kept everything tight, it wouldnt have blown out.

So I HIGHLY recommend them....you will never blow them out if they stand up to all the back presure my car makes.

 

[TGJ]

I have Percy's seal 4 good header gasket's on my TBird. I highly recommend them. If you don't go with the them, go with the Motorcraft OEM ones.

 

[BennyBlown2v]

Percy's are great, wish I had done them lastime I changed the gaskets...gonna order a set for sure when I get some new headers heh.

 

[orangemachine]

thanks for all the information... i ordered some percy's from summit along with header locking bolts.

thanks again

 

[hotmustang331]

^ Awsome. Remember they sell one set for the 2V and one for the 4V. I know I almost didnt realize that they had 2 differnt sets available....just making sure you bought the correct gaskets so you can call them in time if its wrong

 

[forum155pl]

percy is a good choice.. ive seen OEM's go past 20psi on a turbo.. but since your doin it DO IT!!(that saying gets my wallet empty alot)

 

[mity2]

I think stock one is the best one IMO.

Only thing is that stock gasket has this sort of dimple between primary. Which sometimes does not work with some headers (it didn't work with my BBK), because header frange is flat, where as OEM anchor has indentation on frange to accept this