Compression Ratio of M pistons and heads

Posted by Tex Farmall on July 20, 2007 at 22:08:43 from (172.136.129.2):

I recently bought an M with a suffix code of X1B, which decodes to be a 5000ft high altitude motor. I know the pistons are going to be different than a regular M, but does anyone know for sure if the head is also different (i.e. smaller chamber)? Also what would be the actual compression ratio with 5000ft pistons?
Would the high altitude head from an M be better than a regular head from a Super M for making power?

Replies:

• Re: Compression Ratio of M pistons and heads Janicholson 09:43:59 07/21/07 (1)
  • Re: Compression Ratio of M pistons and heads ChadS 08:54:27 07/22/07 (0)

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