400 B block

Moper wrote: "Dakota Ultrasonics PR-8. It isn't cheap."

You can say that again. At a little over a grand for this item, I can pay for a lot of sonic testing by a third party...

Thanks a lot for the advice, though. If I were in the business, I guess that price, and the accuracy it implies, would be my choice, too.

Then again, I've got that much in my TTI exhaust system on this ol' tub....

But, there's just so much money for "projects" when you're retired and on a "fixed income" that isn't "fixed" all that well... LOL!:angry7:

I do appreciate the information, moper! Guess I'll stay with this standard-bore block for awhile...

Bill, in Conway, Arkansas