Re: Vortec heads on 3892657 small block 327?
The mechanic is wrong. They have the same bolt pattern. The only difference is how the intake bolts mount which might be what he was talking about with angles of bolts. There is no change in how the heads bolt on your 67 327 than a 350 a few years later. In fact the 350 and 327 used the same casting numbers for a while. This swap has been done thousands of times.
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