Hi,

I need to change my heads because I've been driving too much on LPG here in Europe.

Do you know of npi or pi windsor heads that would withstand LPG (or CNG) ?
I don't know what you think about it but I think that proper seats and valves stems or guides would already help a lot.

 

I dont know how much difference it would make, if the heads are any different but I would look at heads off a bi fueled engine I think the code for that engine is z

 

Is bi fuel gas & CNG ?

I know that Ford has made a VIN M engine (see http://stores.homestead.com/powertra...OMP/Detail.bok)

 

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