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Apex Paul · 07-25-2010, 10:09 AM

It is not really about engine displacement, it is more accurately a distinction made by bore separation. For example, a Z06 Corvette with a 7 liter 427 CID engine is a small block, while a Chevelle SS with a 396 CID is a big block. As you can see, that wouldn't make any sense if CID were the determining factor for calling it big/small.

07-25-2010, 10:09 AM	#2
Apex Paul Drives: Wagon Queen Family Truckster Join Date: Oct 2009 Location: Louisville, Ky Posts: 1,476	It is not really about engine displacement, it is more accurately a distinction made by bore separation. For example, a Z06 Corvette with a 7 liter 427 CID engine is a small block, while a Chevelle SS with a 396 CID is a big block. As you can see, that wouldn't make any sense if CID were the determining factor for calling it big/small. Last edited by Apex Paul; 07-25-2010 at 10:20 AM.