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Old 01-18-2008, 10:43 AM
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350 Rocket Block Number

I am considering buying a rebuilt 350 Rocket The block casting number I have been given is 161140056. I have been searching this site and many other web sites looking for block casting numbers to identify the motor with no real success. If you have a reference manual that identifies the block, Id sure be most appreciative to learn what the motor is. i have a suspicion the number may not be the right one. It has one digit too many. Thanks for any help you can offer.

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Old 01-18-2008, 12:52 PM
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I found nothing on the casting numbers, but I did see where someone on the olds forums said "if your looking for differences in the 350 rocket and 350 standard blocks there are none"
Even so your many miles away from here, I hear guys always talking about a "350 rocket", and they wouldn't know the difference if they tripped over one, if I guy drives a olds its got a "350 rocket" when the truth is he don't likely know what its got, he just likes to say that magic word "rocket"
the know nothing crowd will always call it that, and a guy trying to get more money out of the sale will call it that.
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Old 01-18-2008, 02:04 PM
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There is a Rocket block manufacturered by GM Performance Parts and it has spread pan rails, raised cam tunnel as well as cnc machnined. Many other featuers are also incorporated into the block. Although the number you posted is not the current part number in the GM Performance book.
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Old 01-18-2008, 06:51 PM
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Not to rain on anyones parade, but Rocket was a typical Olds name...the Rocket Olds. It doesn't mean it is anything special. Much like Buick used the Wildcat name and Ford used the Thunderbird on many engines. It was just a label to intimate that it was something special.
There were "Olds Rocket" engines from the beginning of their V8 production in the 50s, just an advertising slogan. The Performance engines received other names... Like W-30. I'll look and see what your number comes up with in my books, but it probably won't indicate anything other than a 350 Olds.
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Old 01-19-2008, 01:01 PM
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Originally Posted by woodz428
Not to rain on anyones parade, but Rocket was a typical Olds name...the Rocket Olds.
Actually, that does NOT apply here. The "Rocket Block" is a 350 CHEVY block that was offered by Olds for use in racing classes that allowed "corporate" engine swaps. It's called a "rocket block" because there is a large Olds rocket logo cast into the side of the block. Note the rocket logo in the bottom RH picture on this page:

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