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Old 09-20-2006, 01:15 PM
2000CAYukon 2000CAYukon is offline
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Re: Preparing for the worst...

Your 97 block is a Gen 1 block with a one piece rear main oil seal so any Gen 1 350 block with a one piece rear main will work.

I am not sure if the Vortec used a Roller Cam or not; however, the one piece Rear main blocks can be machined (drill and tap some bolt holes) to support a roller cam.

//2000CAYukon
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