Author Topic: small block head question  (Read 120 times)

Offline darkside

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small block head question
« on: August 18, 2018 - 03:23:27 pm »
I  was wondering if o heads are any good? i know j and x heads are good.i have a set on my numbers 71 318 engine.




Offline jimynick

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Re: small block head question
« Reply #1 on: August 19, 2018 - 10:03:47 pm »
Can't speak to the "O" head, but the casting ending in 308 has been discussed extensively and it seems that they flow at least as good as the X and perhaps better. Just my  :2cents: