Head gaskets and boost

[marauder4.6DOHC]

Hi my name is Jason. I have an 2003 Mercury Marauder that I have been doing a engine rebuild and Eaton swap on. I have a question about what kind of head gaskets I should use with having an Eaton blower on my new motor. Motor has upgraded rods and pistons. I will be using ARP head studs on the new motor. Is the OEM head gaskets good enough for a built motor with Boost? If they are not good enough what other head gaskets brands have people used and why?

[J-MAN]

Plenty of Eaton swaps and Trilogy on a stock motor.

[Henry]

OEM/felpro gaskets are more than enough to hold up to 20+ psi of boost

[Zack]

FelPro 1141L and 1141R

[marauder4.6DOHC]

So Zach those are the best head gaskets to use

[justbob]

So Zach those are the best head gaskets to use


26 PSI here with no issues.


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[marauder4.6DOHC]

Thanks bobs. Good to hear

[Serge]

Ford Racing gaskets are capable of handling quite a bit of boost.

[Zack]

Felpro makes the Ford Gaskets, so there is no need to debate who's better

[FordNut]

26 PSI here with no issues.


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Wow. I've been thinking about a bigger crank pulley. I'm running an underdrive and only make 16-18 psi. Just want to keep it streetable on pump gas.

[justbob]

My crank pulley overlaps my water pump pulley. [emoji6]


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[FordNut]

My crank pulley overlaps my water pump pulley. [emoji6]


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Sounds like just a little bit overdrive...

[marauder4.6DOHC]

Order them from rock auto. 70 bucks for both shipped. Now time to look in to some Arp botten end bolts. Any good advice on where to get them?