243 heads
#7
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I just put stock 243 heads in this past weekend. You can tell a difference about 4k, but there is next to no difference down low, even though it bumps up compression. Match a good cam with it and you can make good power.
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#10
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ported 243 are great heads but if u dont have the money and are doing the labor yourself stock 243 with the right cam are still good deal i went from 400 400 to 430h and 420t with just changing heads