Nope

Posted by jdemaris on December 04, 2009 at 08:48:33 from (67.142.130.22):

In Reply to: Re: OT, 1984 chevy blazer engine swap posted by Tim[GA] on December 03, 2009 at 18:30:09:

Nothing was beefed up. The last 6.2 made shared the same block as the 6.5, so it was considered one of the best 6.2s. Used a new one-piece rear main seal and new crankshaft. The block did not get beefed up at all. Later bigger bore 6.5s had thinner cylinder walls, not thicker.

What did happen is finally with some of the last 6.5s made, the outside main bearing bolts were made smaller. Taken down from 12 mm to 10 mm to leave more metal in the clamping area of the main cap. That was a problem area that caused many blocks to crack and crankshafts to break.

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