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Old 08-18-2016, 12:37 AM   #1
red450ih
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1969 C-20 396 Intake Casting Number

I have searched online to no avail for the intake manifold casting number that would have been on a 1969 C-20 396. All I have found so far are casting numbers for cars of similar vintage. Can someone point me in the right direction? Thanks!
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Old 08-18-2016, 12:11 PM   #2
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Re: 1969 C-20 396 Intake Casting Number

Only one casting that year. #3933163 ... a 396 intake is a 396 intake.
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Old 08-18-2016, 04:37 PM   #3
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Re: 1969 C-20 396 Intake Casting Number

That casting is not a truck Q-jet cast iron manifold
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Old 08-18-2016, 08:39 PM   #4
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Re: 1969 C-20 396 Intake Casting Number

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That casting is not a truck Q-jet cast iron manifold
Correct
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Old 08-18-2016, 09:07 PM   #5
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Re: 1969 C-20 396 Intake Casting Number

My 1969 C30 Longhorn 396 motor has 3931067. I was told it's stock and original, but it translates to 325 L-35.

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Old 08-20-2016, 06:01 PM   #6
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Re: 1969 C-20 396 Intake Casting Number

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My 1969 C30 Longhorn 396 motor has 3931067. I was told it's stock and original, but it translates to 325 L-35.

My 69 custom camper 20 with the original 396 is 3931067.
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Old 08-18-2016, 05:01 PM   #7
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Re: 1969 C-20 396 Intake Casting Number

My best guess is 3866961 for 66-69 396 truck.

That's the -only- number I can find that says 396 truck without being raised deck (366,427).

https://www.rapidomarine.com/default..._castings.aspx
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Old 08-18-2016, 07:11 PM   #8
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Re: 1969 C-20 396 Intake Casting Number

My 69 C/20 with a 350 came with a 68 drivers side exhaust manifold. So it is possible that you could have a older big block intake.

Casting numbers. http://outintheshop.com/faq/casting/castings2.html

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Old 08-18-2016, 08:34 PM   #9
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Re: 1969 C-20 396 Intake Casting Number

3883948 if your truck block is a 68 block and not a later 69 block
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Old 08-18-2016, 09:32 PM   #10
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Re: 1969 C-20 396 Intake Casting Number

You have a picture of your carb springs on that set up?
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Old 08-18-2016, 10:07 PM   #11
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Re: 1969 C-20 396 Intake Casting Number

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You have a picture of your carb springs on that set up?

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Old 08-18-2016, 10:11 PM   #12
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Re: 1969 C-20 396 Intake Casting Number

According to my book ("Car & Parts Catalog of Chevy V-8 Engine Casting Numbers 1955-93"), 3931067 is a '69 396 car and light truck cast iron oval port with Q-jet. I have found 3883948 to be '68 car and light truck cast iron oval port with Q-jet. Both of these are high rise intakes.
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Old 08-18-2016, 10:23 PM   #13
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Re: 1969 C-20 396 Intake Casting Number

That sounds right Eagle
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Old 08-18-2016, 10:25 PM   #14
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Re: 1969 C-20 396 Intake Casting Number

Ghalperin, what spring is on the front of the carb. I believe mine to be incorrect. ...
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Old 08-20-2016, 12:57 PM   #15
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Re: 1969 C-20 396 Intake Casting Number

Thanks for the replies. I'll probably just get a 3931067 intake. For some reason I was thinking the truck intake was different for some reason.
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Old 08-20-2016, 01:09 PM   #16
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Re: 1969 C-20 396 Intake Casting Number

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Thanks for the replies. I'll probably just get a 3931067 intake. For some reason I was thinking the truck intake was different for some reason.
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It's different than the 325hp car intake, is it not? The 3866961 casting, so far as I know, is the extra-low-rise intake (like we need the hood clearance). I don't think it's the same as the car unit, but I'm no expert.

I can get you the number right off my factory 1970 unit, but that's newer than you want, I think.
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Old 08-20-2016, 01:29 PM   #17
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Re: 1969 C-20 396 Intake Casting Number

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Originally Posted by jr1000yarder View Post
Ghalperin, what spring is on the front of the carb. I believe mine to be incorrect. ...
I wish that I could help, but mine is MIA.


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