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440 6 pack iron intake manifold, dates & details please #1696762
11/10/14 01:17 AM
11/10/14 01:17 AM
Joined: Dec 2003
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northwest USA
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NANKET Offline OP
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northwest USA
Lets talk cast iron 440 6 pack intakes. There are two part numbers 2946275 and 2946276. What is the difference if any between the two part numbers? I can't tell a difference on the car. What dates do you have of each one? Trying to find the earliest and latest casting dates, and what date they changed the part number on these. Thanks Moparts!

I'll start:
I have two 2946275 intakes with dates 6-17-69 and 7-11-69.
I have one 2946276 dated 8-20-69

Re: 440 6 pack iron intake manifold, dates & details please [Re: NANKET] #1696763
11/10/14 01:31 AM
11/10/14 01:31 AM
Joined: Jul 2003
Posts: 3,464
Back in NJ....
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EWJ Offline
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Back in NJ....
I have a 276-will check and post back on the date code by next w/e.


Ed
EastCoast Land Yacht Assoc.
1967 Newport Conv: 440/4 speed
1969 GTX: 440/4 speed, TX9/TX9, A34, N96
1970 Super Bee: 383/4 speed, B5/B7
1970 Coronet RT: 440/4 speed, A34, N96
1970 Coronet RT: 440/auto, A36, N96
1970 Road Runner convertible: 383/4 speed TX9/D6XW
1970 GTX: 440+6/727, A32, N96
2001 Dodge 2500 HO CTD, 6 speed, 4x4 quad cab long bed
"The early bird may get the worm, but the 2nd mouse gets the cheese".
Re: 440 6 pack iron intake manifold, dates & details please [Re: NANKET] #1696764
11/10/14 01:40 AM
11/10/14 01:40 AM
Joined: Dec 2007
Posts: 18,157
Mass
DAYCLONA Offline
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Mass
The reason for 2 different casting#'s is that the first iron casting run suffered from porosity issues, the later 276 signified a superseded casting replacement


I have 1 Iron 276 manifold with a 12 11 69 casting date

Re: 440 6 pack iron intake manifold, dates & details please [Re: DAYCLONA] #1696765
11/11/14 09:16 PM
11/11/14 09:16 PM
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Sacramento CA
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Morty426 Offline
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Sacramento CA
Here are the 4 Iron Intakes that I own:

276 - 7/15/69
276 - 10/26/69
276 - 11/3/69
276 - 11/11/69

Cheers

Re: 440 6 pack iron intake manifold, dates & details please [Re: Morty426] #1696766
11/11/14 11:03 PM
11/11/14 11:03 PM
Joined: Aug 2003
Posts: 279
Northeastern PA
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Fanning Offline
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Northeastern PA
The following are dates listed here along with dates I wrote down from ebay auctions:

275 5/15/69
275 6/17/69
275 7/11/69
275 7/22/69
275 7/29/69
275 9/24/69

276 7/15/69
276 8/20/69
276 9/25/69
276 10/26/69
276 11/3/69
276 11/11/69
276 12/9/69
276 12/11/69
276 12/22/69

Re: 440 6 pack iron intake manifold, dates & details please [Re: Fanning] #1696767
11/11/14 11:20 PM
11/11/14 11:20 PM
Joined: Jan 2003
Posts: 1,567
Ky
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jt4406 Offline
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Ky
I have 2 "276ers" one is 9-25-69, one 12-11-69.
jess


Yeah, it's hopped up to over 160...
Re: 440 6 pack iron intake manifold, dates & details please [Re: Fanning] #1696768
11/12/14 07:56 PM
11/12/14 07:56 PM
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northwest USA
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Fanning, that is a nice long list, how many years were you collecting the data? Do you think any other casting dates exist?

Looks like they were making both part numbers for about 2 months, that seems odd, if there really was a problem with the 275 casting.

Re: 440 6 pack iron intake manifold, dates & details please [Re: NANKET] #1696769
11/13/14 12:35 AM
11/13/14 12:35 AM
Joined: Jan 2003
Posts: 3,000
Long Island, NY
shakerjoe Offline
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Long Island, NY
I have a 276 with no date - just the pentastar cast on manifold behind the front carb. There is a capital A in a triangle next to the 2946276 - that's it.

Re: 440 6 pack iron intake manifold, dates & details please [Re: shakerjoe] #1696770
11/13/14 01:02 AM
11/13/14 01:02 AM
Joined: Jan 2003
Posts: 17,516
Las Vegas, NV
6bblgt Offline
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Las Vegas, NV
Quote:

I have a 276 with no date - just the pentastar cast on manifold behind the front carb. There is a capital A in a triangle next to the 2946276 - that's it.




is there a date on the bottom? are you sure it isn't #2948276?

Re: 440 6 pack iron intake manifold, dates & details please [Re: 6bblgt] #1696771
11/13/14 01:06 AM
11/13/14 01:06 AM
Joined: Jan 2003
Posts: 17,516
Las Vegas, NV
6bblgt Offline
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Las Vegas, NV
are there 3 iron 440+6 intakes 2946275, 2946276, & 2948276?

is this 2946275 or 2946276?

Re: 440 6 pack iron intake manifold, dates & details please [Re: NANKET] #1696772
11/13/14 01:09 AM
11/13/14 01:09 AM
Joined: Aug 2003
Posts: 279
Northeastern PA
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Fanning Offline
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Northeastern PA
Quote:

Fanning, that is a nice long list, how many years were you collecting the data? Do you think any other casting dates exist?

Looks like they were making both part numbers for about 2 months, that seems odd, if there really was a problem with the 275 casting.




Actually it was just a quick check through the active and completed auctions on ebay combined with the above listed dates. Hopefully others will chime in on this thread and add more part number/dates. With the number of hardcore numbers people on moparts we should be able to come up with a fairly complete list.

Re: 440 6 pack iron intake manifold, dates & details please [Re: 6bblgt] #1696773
11/13/14 07:15 PM
11/13/14 07:15 PM
Joined: Jan 2003
Posts: 3,000
Long Island, NY
shakerjoe Offline
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Quote:

Quote:

I have a 276 with no date - just the pentastar cast on manifold behind the front carb. There is a capital A in a triangle next to the 2946276 - that's it.




is there a date on the bottom? are you sure it isn't #2948276?


just checked the bottom - no date, but there is a tab that looks like say's NG? Also the part # looks like it "was" 2946276 to me - but I guess when it was removed from the mold some slag pulled out the 6?

8330144-joeintake1.jpg (163 downloads)
Re: 440 6 pack iron intake manifold, dates & details please [Re: shakerjoe] #1696774
11/13/14 07:15 PM
11/13/14 07:15 PM
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Long Island, NY
shakerjoe Offline
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2)

8330145-joeintake2.jpg (223 downloads)
Re: 440 6 pack iron intake manifold, dates & details please [Re: shakerjoe] #1696775
11/13/14 07:16 PM
11/13/14 07:16 PM
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Long Island, NY
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8330146-joeintake3.jpg (147 downloads)
Re: 440 6 pack iron intake manifold, dates & details please [Re: shakerjoe] #1696776
11/13/14 07:17 PM
11/13/14 07:17 PM
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Long Island, NY
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8330148-joeintake4.jpg (185 downloads)
Re: 440 6 pack iron intake manifold, dates & details please [Re: shakerjoe] #1696777
11/13/14 11:47 PM
11/13/14 11:47 PM
Joined: Nov 2007
Posts: 511
South Georgia
tx9cuda Offline
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South Georgia
Mine is a 275 with a date of 7-21-69.



1971 BS23H1B
Re: 440 6 pack iron intake manifold, dates & details please [Re: tx9cuda] #1696778
11/14/14 06:44 PM
11/14/14 06:44 PM
Joined: Jan 2003
Posts: 1,177
People's Republic of Kali
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People's Republic of Kali
275: 7-18-69

Re: 440 6 pack iron intake manifold, dates & details please [Re: 70runner] #1696779
11/14/14 10:47 PM
11/14/14 10:47 PM
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Posts: 519
Virginia
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larry4406 Offline
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Virginia
276: 10/21/69

Re: 440 6 pack iron intake manifold, dates & details please [Re: NANKET] #1696780
11/15/14 10:53 AM
11/15/14 10:53 AM
Joined: Mar 2007
Posts: 689
Greater Boston Area
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Greater Boston Area
I have a 71 440+6 Cuda, built September of 70 that was OE judged at the Mopar Nationals in 2013. The car is all numbers matching, however the 440+6 intake is dated 10/69. Paul Jacobs deducted points for the intake being earlier than the rest of the engine casting dates. I have been searching for a 440+6 intake cast in early to mid 1970 for the last year. I have checked all my sources including Ted Stevens and many other suppliers without success. I also ran a wanted ad on Moparts for several months without success. I am looking forward to the conclusion of this thread. The latest casting date I have found is 12/69

Were any intakes cast in 1970 or 1971?

Re: 440 6 pack iron intake manifold, dates & details please [Re: Kudaconv_71] #1696781
11/15/14 11:02 PM
11/15/14 11:02 PM
Joined: Mar 2008
Posts: 9,550
Sacramento CA
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Morty426 Offline
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Quote:

I have a 71 440+6 Cuda, built September of 70 that was OE judged at the Mopar Nationals in 2013. The car is all numbers matching, however the 440+6 intake is dated 10/69. Paul Jacobs deducted points for the intake being earlier than the rest of the engine casting dates. I have been searching for a 440+6 intake cast in early to mid 1970 for the last year. I have checked all my sources including Ted Stevens and many other suppliers without success. I also ran a wanted ad on Moparts for several months without success. I am looking forward to the conclusion of this thread. The latest casting date I have found is 12/69

Were any intakes cast in 1970 or 1971?




I have a 71 SIXPACK Challenger with an SPD of 3/30/71

I've searched for over 20 years and have never found a manifold past 12/69

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