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Your getting the idea all right, not easy to identify a 427 side oiler. In some cases cannot be done FOR SURE without taking the motor apart!
I wasn't 100% for sure until I took the motor down to reduce compression and install a milder cam. Thats when I found out there are no numbers on mine, it is a late model service block. It is drilled for hydraulic lifters, something the very late model blocks had, and a good thing it is!
Behind the flywheel is cast in the block 66-427. Heck I was all excited, for SURE I have a 427 I thought. Then I found out a LOT of the blocks have 66-427 there, and it doesn't have anything to do with the year or the size!
It can be SO frustrating verifying. But NOW, I know what to look for, more than one "sign", some misleading, it takes an "expert" to be sure on SOME blocks. Those WITH numbers are "easy"!
Last edited by Excaliber; 11-01-2004 at 09:12 PM..
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