Quote:
Originally Posted by olddog
My memory (that I do not trust) is that the larger valves for the 427 will hit the cylinder wall on the smaller bore 428. It seems that the cylinder can be machined for the valve to clear, but it is argued that the shrouding of the valve makes it not worth the effort. I'm not sure if the 2.19" works OK with a 428 or not. Hopefully someone will let you know if I remember this correctly or if I'm full of crap.
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I think you are correct. I am not sure regarding the Edelbrock heads, but stock 427 heads won't work without notching. I think a good argument could be made for the plus and minuses of doing that. The weakening of the cylinders for a flow advantage that is unlikely needed or to be used doesn't make sense on many levels. I'd use a set of the 2.09/1.66 heads( or their equivalent, those are factory CJ sizes)