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350 Rocket or 455?

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Old Feb 4, 2015 | 04:15 PM
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350 Rocket or 455?

People told me my engine was a 455 and I can never tell. Can anyone tell from pics? Thanks
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Old Feb 4, 2015 | 04:16 PM
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Another pic
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Old Feb 4, 2015 | 04:17 PM
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Rockers
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Old Feb 4, 2015 | 04:57 PM
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Valve cover-to-brake booster distance looks 350 to me.




What's the casting number?

- Eric
Old Feb 4, 2015 | 05:05 PM
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Yeah, take a pic of the number on the shelf behind/above the water pump.
Old Feb 4, 2015 | 05:16 PM
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395558 2
Old Feb 4, 2015 | 05:27 PM
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size?

Originally Posted by cutlasss1972
395558 2
350
Old Feb 4, 2015 | 05:35 PM
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What is the big numeral toward the left on each head (when looking directly at it from the side of the car)?

- Eric
Old Feb 4, 2015 | 07:02 PM
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Originally Posted by CutlassS1972
395558 2
+1...it's a 350


If it was a 455 it would be 396021

Last edited by oldsman72; Feb 4, 2015 at 07:04 PM.
Old Feb 4, 2015 | 07:35 PM
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Originally Posted by MDchanic
What is the big numeral toward the left on each head (when looking directly at it from the side of the car)?

- Eric
Never checked that...never knew there was a numeral there
Old Feb 4, 2015 | 07:35 PM
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Originally Posted by oldsman72
+1...it's a 350


If it was a 455 it would be 396021
Don't 455 water pumps fit on 350 small blocks or am I wrong?
Old Feb 5, 2015 | 08:56 AM
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Originally Posted by CutlassS1972
Don't 455 water pumps fit on 350 small blocks or am I wrong?
Yes, the water pumps are interchangeable between the BBO and SBO. Be aware that there are three different length snouts depending upon the application, and there are two different diameter outlets depending upon the year (70-earlier is 2" and 71-later is 1.75").
Old Feb 5, 2015 | 09:27 AM
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Originally Posted by CutlassS1972
Don't 455 water pumps fit on 350 small blocks or am I wrong?
The only substantive difference between the big block and small block Olds motors is the deck height. Water pumps, cams, front covers, timing chains, rockers, even heads can be swapped from one to the other. The swap isn't always a smart thing to do (SBO heads don't flow enough for a BBO, for example) but the parts physically bolt up.
Old Feb 5, 2015 | 09:37 AM
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"two different diameter outlets "

INlets... that radiator hose nipple is the pump's inlet.

72 Cutlass- looks like a sprayed-in-place engine paint job.

"Numeral" eh? That's pretty high-falutin' talk there.

and correct, as well!

http://mathforum.org/library/drmath/view/58756.html

"The difference is sort of like the difference between a person and his
name. You are a person, and there is just one of you. But different
people probably call you by different names. Your name isn't you, but
it represents you.

In the same way, a number is a thing that we talk about in math, such
as "three," which is hard to define exactly. I might say it's the
abstract property or "threeness" that is shared by any set of three
things. A numeral, on the other hand, is any name or symbol for that
number, such as "3" or "III" or "11 (binary)" or whatever animal face
is used to represent a three in Mayan carvings. You can't see a three,
but you can see things that can be described by the number 3, and you
can see the numeral "3" that is used to represent it.

We have to be careful sometimes not to confuse the numeral with the
number. For example, a numeral "12" may have two digits, but the number
12 could be represented by numerals with other numbers of digits, or by
numerals where the concept of digit is meaningless. We often get
questions like "are there any numbers after a trillion?" when people
really mean, "are there any names for numbers bigger than a trillion?"
Similarly, the fact that no one can ever write out the numeral for the
number we call "pi" completely doesn't mean the number doesn't exist!

On the other hand, we do often use the word "number" to mean "numeral"
when it isn't important to make that distinction. I don't get upset if
someone says he's writing a number, when it's really a numeral he
wrote.

- Doctor Peterson, The Math Forum"
Old Feb 5, 2015 | 09:59 AM
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Originally Posted by Octania
"Numeral" eh? That's pretty high-falutin' talk there.

and correct, as well!
Hey. This is an Oldsmobile site.
We try to keep it just a little bit classier than the rest of them.

- Eric
Old Feb 5, 2015 | 10:46 AM
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Intake manifold on a small block is 12" wide, big block intake is 14+" wide.
Old Feb 5, 2015 | 11:07 AM
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Originally Posted by MDchanic
Hey. This is an Oldsmobile site.
We try to keep it just a little bit classier than the rest of them.

- Eric

THEY SAID IT COULDN'T BE DONE
by
Benny Hill

They said that it could not be done,
He said, "Just let me try."
They said, "Other men have tried and failed,"
He answered, "But not I."
They said, "It is impossible,"
He said, "There's no such word."
He closed his mind, he closed his heart...
To everything he heard.

He said, "Within the heart of man,
There is a tiny seed.
It grows until it blossoms,
It's called the will to succeed.
Its roots are strength, its stem is hope,
Its petals inspiration,
Its thorns protect its strong green leaves,
With grim determination.

"Its stamens are its skills
Which help to shape each plan,
For there's nothing in the universe
Beyond the scope of man."
They thought that it could not be done,
Some even said they knew it,
But he faced up to what could not be done...
And he couldn't bloody do it!
Old Feb 5, 2015 | 04:49 PM
  #18  
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Originally Posted by Octania
"two different diameter outlets "

INlets... that radiator hose nipple is the pump's inlet.
Yeah, I started typing "two different diameter nipples" but I thought that would steer this thread right into the gutter...
Old Feb 5, 2015 | 05:07 PM
  #19  
MDchanic's Avatar
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One diameter or another, I've never felt it made much difference.

Now, caliber, on the other hand, is something I'm wary of...



- Eric
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