Moparts

440 6 pack iron intake manifold, dates & details please

Posted By: NANKET

440 6 pack iron intake manifold, dates & details please - 11/10/14 05:17 AM

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
Posted By: EWJ

Re: 440 6 pack iron intake manifold, dates & details please - 11/10/14 05:31 AM

I have a 276-will check and post back on the date code by next w/e.
Posted By: DAYCLONA

Re: 440 6 pack iron intake manifold, dates & details please - 11/10/14 05:40 AM

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for 2 different casting#'s is that the first iron casting run suffered from porosity issues, the later 276 signified a superseded casting replacement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
Posted By: Morty426

Re: 440 6 pack iron intake manifold, dates & details please - 11/12/14 01:16 AM

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
Posted By: Fanning

Re: 440 6 pack iron intake manifold, dates & details please - 11/12/14 03:03 AM

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
Posted By: jt4406

Re: 440 6 pack iron intake manifold, dates & details please - 11/12/14 03:20 AM

I have 2 "276ers" one is 9-25-69, one 12-11-69.
jess
Posted By: NANKET

Re: 440 6 pack iron intake manifold, dates & details please - 11/12/14 11:56 PM

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.
Posted By: shakerjoe

Re: 440 6 pack iron intake manifold, dates & details please - 11/13/14 04:35 AM

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.
Posted By: 6bblgt

Re: 440 6 pack iron intake manifold, dates & details please - 11/13/14 05:02 AM

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?

Attached picture 8329559-2948276-1971-440-3x2bbl-intake.jpg
Posted By: 6bblgt

Re: 440 6 pack iron intake manifold, dates & details please - 11/13/14 05:06 AM

are there 3 iron 440+6 intakes 2946275, 2946276, & 2948276?

is this 2946275 or 2946276?

Attached picture 8329568-2946275-1970-440-3x2bbl-intake.jpg
Posted By: Fanning

Re: 440 6 pack iron intake manifold, dates & details please - 11/13/14 05:09 AM

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.
Posted By: shakerjoe

Re: 440 6 pack iron intake manifold, dates & details please - 11/13/14 11:15 PM

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?

Attached picture 8330144-joeintake1.jpg
Posted By: shakerjoe

Re: 440 6 pack iron intake manifold, dates & details please - 11/13/14 11:15 PM

2)

Attached picture 8330145-joeintake2.jpg
Posted By: shakerjoe

Re: 440 6 pack iron intake manifold, dates & details please - 11/13/14 11:16 PM

3)

Attached picture 8330146-joeintake3.jpg
Posted By: shakerjoe

Re: 440 6 pack iron intake manifold, dates & details please - 11/13/14 11:17 PM

4)

Attached picture 8330148-joeintake4.jpg
Posted By: tx9cuda

Re: 440 6 pack iron intake manifold, dates & details please - 11/14/14 03:47 AM

Mine is a 275 with a date of 7-21-69.
Posted By: 70runner

Re: 440 6 pack iron intake manifold, dates & details please - 11/14/14 10:44 PM

275: 7-18-69
Posted By: larry4406

Re: 440 6 pack iron intake manifold, dates & details please - 11/15/14 02:47 AM

276: 10/21/69
Posted By: Kudaconv_71

Re: 440 6 pack iron intake manifold, dates & details please - 11/15/14 02:53 PM

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?
Posted By: Morty426

Re: 440 6 pack iron intake manifold, dates & details please - 11/16/14 03:02 AM

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
Posted By: The Black Car

Re: 440 6 pack iron intake manifold, dates & details please - 11/16/14 06:13 AM

Quote:

are there 3 iron 440+6 intakes 2946275, 2946276, & 2948276?

is this 2946275 or 2946276?




My cars engine assembly date is 9-11-69, what would be an appropriate casting date for that assembly date? Apparently, either casting number would be correct, either 275 or 276, yes??

I was thinking a range with in 2 months prior casting date to engine assembly date would be correct, what do the experts here think???

Many thanks!!!!
Posted By: jt4406

Re: 440 6 pack iron intake manifold, dates & details please - 11/16/14 03:25 PM

I'm very far from an expert, but I have read on this board that the hemi engines were cast in batches and that the dates on them may be well in advance of the car's actual build date. I would think that the same would apply to something as special as the six pack intakes. As I said, don't really know, just thinking out loud.
Jess
Posted By: 69_SIX_PACK

Re: 440 6 pack iron intake manifold, dates & details please - 12/09/14 02:20 AM

275 - 07/14/69
Scheduled Build Date 9/08/1969.
Lynch Rd Road Runner.
Posted By: NANKET

Re: 440 6 pack iron intake manifold, dates & details please - 12/21/14 05:00 AM

Has anyone ever seen an intake cast earlier than 7/15/69? Anyone ever seen a 1968 casting date?
Posted By: Golden-Arm

Re: 440 6 pack iron intake manifold, dates & details please - 12/21/14 05:24 AM

don't know if this is legit, but here's a manifold for sale on ebay, with a cast date of 10/9/68

http://www.ebay.com/itm/291329443334

Attached picture 8368790-$_57,.JPG
Posted By: flypaper

Re: 440 6 pack iron intake manifold, dates & details please - 12/21/14 06:19 AM

276 11/4/69
Posted By: The Black Car

Re: 440 6 pack iron intake manifold, dates & details please - 12/21/14 08:30 AM

I just got one from Scott for The Black Car, 6bbl Sport Fury GT.

Casting date 8/20/69 -- PN# 276

Engine Assembly date 9/11/69

SPD 10/09/69
Posted By: 69_SIX_PACK

Re: 440 6 pack iron intake manifold, dates & details please - 12/21/14 08:39 PM

Quote:

Has anyone ever seen an intake cast earlier than 7/15/69?




Yeah the one I posted just above

Attached picture 8369368-Intake.JPG
Posted By: RealWing

Re: 440 6 pack iron intake manifold, dates & details please - 12/23/14 04:39 AM

From my 440-6 bbl Superbird
CI Intake manifold Casting p/n 2946276 Dated Oct 23, 1969
Engine block cast May 14, 1969
Engine assembled Nov 5, 1969
Cylinder heads cast Oct 31, 1969
Posted By: QuickBpBp

Re: 440 6 pack iron intake manifold, dates & details please - 12/23/14 05:24 AM

I Have 2 cast iron ones I can check numbers and dates on over the holidays...
Posted By: GTS440

Re: 440 6 pack iron intake manifold, dates & details please - 12/28/14 04:59 PM

What is the spd on the Superbird?
Posted By: RealWing

Re: 440 6 pack iron intake manifold, dates & details please - 12/29/14 03:46 AM

Quote:

What is the spd on the Superbird?




All Superbirds had a SPD of B30 (Nov 30th)
My bird was delivered to Clairpointe on Nov 12th according to the NASCAR listing, so it was probably built on Nov 11th or 12th.
Posted By: GTS440

Re: 440 6 pack iron intake manifold, dates & details please - 12/29/14 04:22 PM

Thanks! I recently aquired a 70 V code RR project build date of oct 8 69 missing the original drivetrain & replaced with a later 70 HP 440 so I am trying to figure out what date codes I need to look for to be as correct as possible. I also came up with a 70 V code Cuda project build date of nov 5 69 that came with what I was told was the original block. The partial vin is on the block & it was assembled on 11 4 but I was concerned it might not be correct as it was cast in may 69, until I saw your casting date. So maybe it is correct?
Posted By: RealWing

Re: 440 6 pack iron intake manifold, dates & details please - 01/03/15 10:19 PM

Quote:

Thanks! I recently aquired a 70 V code RR project build date of oct 8 69 missing the original drivetrain & replaced with a later 70 HP 440 so I am trying to figure out what date codes I need to look for to be as correct as possible. I also came up with a 70 V code Cuda project build date of nov 5 69 that came with what I was told was the original block. The partial vin is on the block & it was assembled on 11 4 but I was concerned it might not be correct as it was cast in may 69, until I saw your casting date. So maybe it is correct?



Chrysler did strange things with parts in the old days - so yes, it is certainly possible that is correct!!
Posted By: 6bblgt

Re: 440 6 pack iron intake manifold, dates & details please - 01/03/15 11:05 PM

The date on the fender tag is NOT the build date - it is the SPD - "Scheduled Production Date".

Casting dates & assembly dates have to precede the actual build date, which is hard to determine without some good documentation/research. Got a b'cast sheet? What's the date on the 'Cuda's (original?) K-frame?
Posted By: GTS440

Re: 440 6 pack iron intake manifold, dates & details please - 01/04/15 04:01 AM

I have the broadcast sheet but don't see a date. Where would the date be? Is it the vehicle order number ( B05076461 )??
Posted By: bogusracer

Re: 440 6 pack iron intake manifold, dates & details please - 01/05/15 09:58 AM

Production tooling and casting molds were and are generally a few years ahead of the actual build dates of the cars they are intended for. This allows the manufacturer adequate time to evaluate and test the new parts for durability, driveability and performance and set up tooling for mass production. That casting date would not be out of line for the 1970 production model year, especially if it was in a batch cast for engineering tests and evaluation. Another thing is the 1970 model year cars went into production in July / August 1969. Prototypes and preproduction models were already being built in mid to late 1968 and used for engineering evaluation and testing.

We know that Chrysler contracted Edelbrock to produce the 1969 - A12 Intakes out of Aluminum. That doesn't mean Chrysler had not already cast their own version of the Six Pack Manfold in cast iron, planning ahead for increased production for 1970. (reference the comments about the casting dates on cast iron intake for sale on eBay - cast in late 1968) Epecially if they knew Edelbrock could not make their (Chrysler Corp's) projected sales volume increase for 1970 for 440 Six Pack equipped cars.

This is just "My Opinion" based on my experience in Auto Manufacturing. I DO NOT HAVE PROOF of this (referencing Chrysler Corp. circa 1969) . It is just my logical analysis of what happens in the Auto Mfg. world, based on my personal experiences. This process continues currently with most Auto Manufacturers. I can attest to the fact that 2015 models were being built and tested back in 2013. Commonly called "Engineering Mules"

I will have 39 years in an Auto Mfg. Plant in March 2015 and have seen and participated in a lot of the prototype / preproduction builds over the years, especially pertaining to Paint Validation for workability and Color Validation trials etc. and Paint Application in an assembly plant. (my area of expertise).

Also I own a 1970 Six Pack Challenger RT -SPD date on Data plate of B05 Nov. 5, 1969 and I believe it has a Cast Iron intake - cast in early 1969. (will have to confirm actual date)

Just wanting to shed some light on the processes involved in the Manufacture of Cars and how the build / testing phases progress.

Hope this helps with the question about the casting date on the manifold.

Also for guy who said he had points deducted from his Mopar Nats Judging - for his intake being date coded out of the accepted range for the cars build date. Apparently the Judge is just following the "Best Accepted Practice" for judging and it is NOT Based on the actual facts of Mass Automobile Production. The judges caveat is to put the burden of proof on the owner. I had a similiar situation when I had my Six Pack Challenger R/T judged at the Mopar Nats and finsihed 3rd exactly 1/2 point behind 2nd place and 1 point behind the 1st place finisher. I got dinged on my tailinght wiring harness being incorrect and it was the one that originally came in the car - Go figure ..... LOL

Have a Good One !


Bogusracer - Jeff
Posted By: 4406bbl

Re: 440 6 pack iron intake manifold, dates & details please - 02/04/15 07:08 AM

I purchased a 440-6 intake at mopar nats in 1993 with no date code and was told by show judges it was considered correct for 1971 cars, right or wrong I do not know.
Posted By: 750-h2

Re: 440 6 pack iron intake manifold, dates & details please - 02/05/15 02:32 AM

My 100% for sure original 1970 440 Six Pack Challenger with a SBD Dec/06/69 came with an aluminum intake.
Posted By: NANKET

Re: 440 6 pack iron intake manifold, dates & details please - 02/05/15 03:29 AM

Quote:

My 100% for sure original 1970 440 Six Pack Challenger with a SBD Dec/06/69 came with an aluminum intake.




Which plant was the car built in?
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