Are all 440 six packs created equal?

[focal 7]

I have a 1970 six pack long block and have located a 6 pack intake system for it complete with air cleaner and linkage. My question is, are there date codes for the 6 pack systems themselves? How do I know that it will match? Are there numbers on the carbs or manifolds? I need help. Thanks in advance!

[Alaskan_TA]

The carbs are date coded, I believe the iron sixpak intakes have date codes, but the aluminum ones do not. 

I know the small block ones do not have date codes for sure.

[Cuda Cody]

All 3 carbs will have the 4 digit date codes on them.  They will be all very close in the dates.

4 digit codes are like this.... 2359 (235th day of 1969)

[Green Drop Top]

Yes, iron intakes are date coded. Yes, the carbs are as well, and the center carbs are quite specific to each year and transmission application, in addition there's a special group of carb numbers that were California only (emmissions). As far as performance I'm pretty sure all of them were basically the same carb with minor jetting differences.

[Plum6Pak]

Hey Focal, that will be sweet once you get it set up, just curious, how can you tell it's a 6pak long block? I've always wondered how you can tell it's a 6pak engine other than the forged steel crank that's internally and externally balanced and has the weighted harmonic balancer. When they'd build a 6pak engine, they'd just grab an HP block and build it up as the 6pak but I don't believe there is a way to tell by the numbers. Is the manifold you located aluminum or cast iron? I believe the first generation (69-1/2) 6pak setups were aluminum, after that I believe they were all cast iron but will still have the date codes.

[focal 7]

Plum6pak,
   Now you got me there on the numbers thing, I'm not sure either. But as for this motor, it came out of a wrecked 70 superbee in 1979 and it was a 6 pack car, so that's how I know. It does indeed have the proper crank, rods, damper, heads, etc. The manifold that I am looking at is cast iron. I wish I could find out the exact numbers I need for the intake and carbs......anybody got em!   Thanks

[Chryco Psycho]

the iron intakes were used in 70/71 , alum was used in 69
 the carbs will have a 4 digit date # on them ex 2859 ,which is 285th day of 69 79 89 99
 

[Green Drop Top]

I need some original 70 carbs for my 70 440 +6 Cuda, mine was a California car so I need the funky emissions CA only center carb (#4144) and the two ends carbs #4383 (rear) and #4382 (front).

If you happen to have those I'll replace them with all brand new ones as trade!

 

*BTW, some early build date 1970 cars recieved leftover aluminum intakes.

[Chryco Psycho]

I thought about buying a new set in late 99 with the correct date code !!

[trouble]

This is a center carb with date and number.I'm not sure what the number on the bottom of the carb is.

[Green Drop Top]

Yep, that's a 1970 440+6 manual transmission center carb manufactured the 283rd day of 1969 (September/October or so).

Here's where to look for the numbers which are stamped into the top rear sides of the upper air horn areas.

[trouble]

Thanks for telling me what the numbers 2839 are.My 6 pack manifold has a date stamped on it, but no manifold number.Should it have a manifold number on it?thanks Al.

[focal 7]

VERY,  VERY helpful.....thanks to all   !!!

[Chryco Psycho]

Thanks for telling me what the numbers 2839 are.My 6 pack manifold has a date stamped on it, but no manifold number.Should it have a manifold number on it?thanks Al.

usually there is a casting #

[Green Drop Top]

Trouble, what's teh casting date on your intake?