What's the deal with head gaskets?

[Serge]

From what I understand mod blocks all interchange so head gaskets should all be the same. Yet RockAuto lists a crap load of different gaskets for different cars. Marauders are shown to use same gaskets as Crown Vics and most other 2v and 4v engines. Yet if I look at Aviator and Mach 1 they are shown different gaskets. Terminators, yet another gasket. 97-97 Cobra yet another gasket.

[musclemerc]

I'm running Cometic head gaskets for a Terminator, several coats of copper head gasket spray on both sides and ARP head studs. 20psi no problem!

[offroadkarter]

Rockauto isn't always correct. They've sent me improper parts for my BMW's before.

The "head gasket kit" which is now NLA shows 01 cobra, 03/04 Mach 1 and 03-05 Aviator as well as Marauder

https://parts.autonationfordwhitebearl ake.com/oem-parts/ford-engine-cylinder-head-gasket-set-2c5z6079aa?c=Zz1lbmdpbmUmcz1nY XNrZXRzLWFuZC1zZWFsaW5nLXN5c3R lbXMmbD0yJm49QXNzZW1ibGllcyBQY WdlJmE9bWVyY3VyeSZvPW1hcmF1ZGV yJnk9MjAwMyZ0PWJhc2UmZT00LTZsL XY4LWdhcw%3D%3D

[03Merc]

Felpro makes our gaskets. Advance should have them.


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[justbob]

Felpro and copper sprayed holding up easily at 26#s and plain old FR head bolts. [emoji16]


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[Turbov6Bryan]

I'm running Cometic head gaskets for a Terminator, several coats of copper head gasket spray on both sides and ARP head studs. 20psi no problem!

A lot of guys used to use silver spray paint on cometics with outstanding results. Maybe cause it goes on thick, i use glue.

[Turbov6Bryan]

And the boost gauge settles between the 2 oo in boost at the bottom of a 30 psi gauge.. no joke.. on a buick.