427 FE R.P.M. Range

[neighbourdave]

Hello all, newbie here. I just read this current post and had some questions about the 427's.
I have 2 427 blocks I need some help to identify.
One is a none side oiler with screw in core plugs, 66 427 cast into the bell housing area, a casting # on the pass. side of C6AE-B (the B is questionable),
a casting date of ?K21 and main caps with C3AE. The lifter galleries are not drilled.
The second is a side oiler with screw in core plugs, 66 427 in the bell housing area, no casting # on the pass. side (ribs in the casting, 5 to the front, 6 to the back), casting date of ?M11 and the lifter galleries are drilled.
I have 2 sets of heads that are C8AE-H castings.
2 C4AE
2 C7AE
I collected this stuff in order to build a BB Cobra. I have now decided to go the FI SB route so I want to sell this stuff off.
If I am in the wrong area, please direct me to the correct forum.
I also have a set of DOVE-A 429 heads if anyone is interested.
I am in Southern Ontario.
While I am here, I wanted to go Factory Five with my kit, pros and cons anyone?
Any help is greatly appreciated.
Thanks in advance.
Dave