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Cylinder heads
Sun Jul 12, 2015 22:30

If you mean 471 heads, on the negative they are lower compression, on the plus side they are posted so you can machine more off them. If you are doing a rebuild and putting new pistons in you could use pop ups to raise compression. Here is a link to the Mummert site

I would ask the question re breathing on the Y-blocksforever site.

  • Y block headsJR, Sun Jul 12 10:09
    292 y block with blown head gasket and cracked head. Ecz g The heads need about 700 in machine work. I have a set of 5750 147 heads am is gaining or losing if I swap. Thanks
    • Cylinder heads — alkemy, Sun Jul 12 22:30
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