03-01-2007, 01:51 PM
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CC Member
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Join Date: Sep 2002
Location: Hickory,
NC
Cobra Make, Engine: ERA 427SC w/427so, ERA GT #2002
Posts: 1,106
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Not Ranked
I hesitate to use my block as the standard because it was a veteran of the high banks. But I'll find out what the deal is. As an example, look at the photo I posted of the bottom end going together and look at the center main cap. The reinforcing strap was a modification made by a NASCAR engine builder. Similarly, the hole at the front of the block may have been for plumbing an external oil pump. I don't know that for sure, but I'll find out. 
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Tom
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough HORSEPOWER." Mark Donohue
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