hey guys, doing a head gasket on a hilux with a 4y, i have a 3y head sitting round spare and i was wondering if there was any gains in fitting a 3y head to a 4y block?
cheers, mick
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3y head onto 4y???
Moderators: toaddog, Elmo, DUDELUX
Re: 3y head onto 4y???
Pretty sure the heads are identical on the 3Y & 4Y.. Could be wrong but I'm 99% sure they are the same head!
2" Spring Lift, Custom Rear with Swing-Away Spare, Rear Lokka & Awesome Black Sunnies!!
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Re: 3y head onto 4y???
stick with the 4y head as they have bigger valves and better flow. if from memory you can do it but the head gaskets are different,.
i wouldn't do it cos you are going backwards with valve sizing and flow.
i wouldn't do it cos you are going backwards with valve sizing and flow.
Re: 3y head onto 4y???
Not wise to give a motor with almost no power, even less power 
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