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How to determine a real Six-Pack block? #72691
06/12/08 10:58 PM
06/12/08 10:58 PM

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Hi guys,

Was wondering what stampings one could look for to determine if a 1970-era (cast in '69) was actually a 440 six-pack block?

Thanks!

Re: How to determine a real Six-Pack block? #72692
06/12/08 11:08 PM
06/12/08 11:08 PM
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Carlisle, AR.
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mdwyer Offline
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I think the only way would be the vin number.


mike


1970 Challenger T/A
1970 Roadrunner RM21 Vcode
1971 Gtx
1971 Satellite
1971 Charger 500 GB5 383 A54 car
1972 Satellite
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Re: How to determine a real Six-Pack block? [Re: mdwyer] #72693
06/13/08 12:08 AM
06/13/08 12:08 AM
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Spokane Washington
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Quote:

I think the only way would be the vin number.





If we are talking about a bare block that is the only correct answer lies within the VIN#, or more specifically, the blocks VIN sequence number matching the VIN# of an original Six Pack car..

Re: How to determine a real Six-Pack block? #72694
06/13/08 12:48 AM
06/13/08 12:48 AM
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south carolina
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gastongremlin Offline
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i don't know if this is 100% true all of the the time but the few i've seen were marked 440-6 on the flat area in front of the drivers side head area.

Re: How to determine a real Six-Pack block? #72695
06/13/08 12:55 AM
06/13/08 12:55 AM
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lewiston, ID
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I don't think you can....why would the factory need to make a distinction between a 440 six pack and a 440 4 barrell block??? it's the SAME block...and other than an "HP" stamp, the lo-po 350 horse 440 used the same block.

Re: How to determine a real Six-Pack block? [Re: cornucopia] #72696
06/13/08 12:58 AM
06/13/08 12:58 AM
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south carolina
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the true 6 pack blocks have a high nickle content in the iron.

Re: How to determine a real Six-Pack block? [Re: gastongremlin] #72697
06/13/08 01:01 AM
06/13/08 01:01 AM
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Overpriced Housing Central
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Quote:

the true 6 pack blocks have a high nickle content in the iron.




That's not true compared to the lo-po or even 4v blocks. They are the same blocks, same cores, same foundries.

Only way to know is how Scott mentioned above, have to tie the partial VIN to a complete V code VIN.

Re: How to determine a real Six-Pack block? [Re: RobX4406] #72698
06/13/08 01:26 AM
06/13/08 01:26 AM
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Quote:

Quote:

the true 6 pack blocks have a high nickle content in the iron.




That's not true compared to the lo-po or even 4v blocks. They are the same blocks, same cores, same foundries.

Only way to know is how Scott mentioned above, have to tie the partial VIN to a complete V code VIN.





Re: How to determine a real Six-Pack block? [Re: 1_WILD_RT] #72699
06/13/08 04:53 AM
06/13/08 04:53 AM
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Kent, Wa
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it will have " " logos all over it..


I am truckless..
Re: How to determine a real Six-Pack block? [Re: 340SHORTY] #72700
06/13/08 06:23 AM
06/13/08 06:23 AM
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Houston,Tx.
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As pointed out earlier, there is no differance between a HP block and a six pack block. People always said HP2 denoted a six pack block, but that just meant it was assembled on the second shift. I read an article many years ago where they interviewed a Chrysler engineer who was part of the perfomance program. He stated that the HP blocks were visually inspected for minimal core shift. He said they would look at how many HP engines they needed for production requirements that week, look through their available blocks, visually inspect them, stamp them HP and segregate them. The block in a lo po Imperial may have met the standards for an HP, but if it was not inspected because they had already picked their quota, it was not marked. Based on the production standards at the time, I believe this to be true.

Re: How to determine a real Six-Pack block? [Re: 1_WILD_RT] #72701
06/13/08 06:31 AM
06/13/08 06:31 AM
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Quote:

Quote:

Quote:

the true 6 pack blocks have a high nickle content in the iron.




That's not true compared to the lo-po or even 4v blocks. They are the same blocks, same cores, same foundries.

Only way to know is how Scott mentioned above, have to tie the partial VIN to a complete V code VIN.












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Re: How to determine a real Six-Pack block? [Re: moparmarks] #72702
06/13/08 06:55 AM
06/13/08 06:55 AM
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Joplin, MO USA
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Re: How to determine a real Six-Pack block? [Re: Robbins] #72703
06/13/08 07:15 AM
06/13/08 07:15 AM
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I have also heard someone ellode to there being an A or maybe AA stamped somewhere on the bottom around the pan rail oil pump area. I don't know if it was an inside joke or not , bu they treated it like a decoder ring or secret handshake. SHHH others are listening! I have also heard that many but not all are HP2 blocks, but to my knowledge, matching the VIN to a known VIN is the only factual way to know.


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Re: How to determine a real Six-Pack block? [Re: mopar346] #72704
06/13/08 07:25 AM
06/13/08 07:25 AM
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When will this HP2 business die? As mentioned earlier, HP2 denotes second shift, not six-pack. This is a fact, not fiction. The only way to know for sure is to match the vin sequence with an existing documented car.

Re: How to determine a real Six-Pack block? [Re: ryangtogtx] #72705
06/13/08 08:21 AM
06/13/08 08:21 AM

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On the "HP" or "HP2" stamp ... where exactly should this be located? Should this be near the Casting Date on the Passenger Side or somewhere else?

Thanks!

Re: How to determine a real Six-Pack block? #72706
06/13/08 08:31 AM
06/13/08 08:31 AM
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Spokane Washington
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Here's a 70 440 block stamped with HP2, guess which car it came in (Six Pack or 4 barrel) and then explain how you came to either conclusion

4485811-440HP2.jpg (112 downloads)
Re: How to determine a real Six-Pack block? [Re: ScottSmith_Harms] #72707
06/13/08 09:07 AM
06/13/08 09:07 AM
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HP2 IS simply the designation for the second and most informed know that, many engines HP and otherwise were built on that shift. I have commonly heard that a great percentage of the A12 motors were assemblied on the second shift, BUT NOT ALL, true or not I am just restating what I haved heard, but qualifying it as such. Sometimes when statements like that are aired out, someone with some facts will come forward to discredit it, that is one of the good things about this forum, there are many people in the know on here. HP2 confirms or denies anything, it is just what I have heard as a common theory. Fill me in though, I have no problem being corrected, just ask my wife.

Has anyone else heard of the A or AA stamping????


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Re: How to determine a real Six-Pack block? [Re: ScottSmith_Harms] #72708
06/13/08 10:32 AM
06/13/08 10:32 AM

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Quote:

Here's a 70 440 block stamped with HP2, guess which car it came in (Six Pack or 4 barrel) and then explain how you came to either conclusion




Six pack car. How I came to my conclusion...





Either a coin toss, or the fact that you posted the pic, giving a slight edge to the fact that you took the picture BECAUSE it was a six pack

Re: How to determine a real Six-Pack block? [Re: gastongremlin] #72709
06/13/08 10:53 AM
06/13/08 10:53 AM
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Quote:

the true 6 pack blocks have a high nickle content in the iron.




and where did you hear this little tidbit of info ???


Re: How to determine a real Six-Pack block? #72710
06/13/08 10:53 AM
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JohnRR Offline
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Quote:

Hi guys,

Was wondering what stampings one could look for to determine if a 1970-era (cast in '69) was actually a 440 six-pack block?

Thanks!




by the FULL CHRYSLER ASSIGNED VIN of the car it came out of ...

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