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4.0 head swap


70roadrunner

New Member
Joined
Feb 27, 2012
Messages
288
Reaction score
8
Points
0
Location
sedro-woolley, Wa
Vehicle Year
1984
1970
194
Make / Model
ford
plymouth
Engine Size
2.8
Transmission
Manual
pulled the heads on my 4.0 that im putting in my BII and one is cracked. i read through the tech articles, and the "how to rebuild" article talks about the 95-97 fast burn heads. my engine, wiring, and computer are 91, but id like to raise the compression and the hears seem to have a smaller combustion chamber. in the article it says you cant do this on an aerostar van, but doesnt mention the ranger/BII/explorer. does anyone know if this can be done without a meltdown like the article says will happen in the aerostar?
 



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