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How to determine a real Six-Pack block?
#72691
06/12/08 11:58 PM
06/12/08 11:58 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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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!
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Re: How to determine a real Six-Pack block?
#72692
06/13/08 12:08 AM
06/13/08 12:08 AM
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Joined: Apr 2006
Posts: 209
Carlisle, AR.
mdwyer
enthusiast
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enthusiast
Joined: Apr 2006
Posts: 209
Carlisle, AR.
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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
1997 Dodge 1500 hunting rig
2014 Ram 2500 Mega Cab
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Re: How to determine a real Six-Pack block?
[Re: mdwyer]
#72693
06/13/08 01:08 AM
06/13/08 01:08 AM
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Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms
Mr Wizzard
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Mr Wizzard
Joined: Jan 2003
Posts: 42,714
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..
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Re: How to determine a real Six-Pack block?
[Re: gastongremlin]
#72697
06/13/08 02:01 AM
06/13/08 02:01 AM
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Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
RobX4406
I Live Here
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I Live Here
Joined: Apr 2005
Posts: 12,271
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.
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Re: How to determine a real Six-Pack block?
[Re: RobX4406]
#72698
06/13/08 02:26 AM
06/13/08 02:26 AM
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Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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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.
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Re: How to determine a real Six-Pack block?
[Re: 1_WILD_RT]
#72699
06/13/08 05:53 AM
06/13/08 05:53 AM
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Joined: Aug 2003
Posts: 12,291
Kent, Wa
340SHORTY
Truck Nut
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Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
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it will have "  " logos all over it..
I am truckless..
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Re: How to determine a real Six-Pack block?
[Re: 340SHORTY]
#72700
06/13/08 07:23 AM
06/13/08 07:23 AM
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Joined: Jan 2003
Posts: 1,374
Houston,Tx.
Lee446
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,374
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.
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Re: How to determine a real Six-Pack block?
[Re: 1_WILD_RT]
#72701
06/13/08 07:31 AM
06/13/08 07:31 AM
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Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
moparmarks
I Live Here
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I Live Here
Joined: Nov 2003
Posts: 12,494
Western Colorado High Desert
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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.
72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, . Moparmarks Parts & Restorations Desert Mopar Metal Grand Jct. CO 970-261-7039 http://moparmark.com/motormangj@gmail.com
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Re: How to determine a real Six-Pack block?
[Re: ryangtogtx]
#72705
06/13/08 09:21 AM
06/13/08 09:21 AM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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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!
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Re: How to determine a real Six-Pack block?
[Re: ScottSmith_Harms]
#72707
06/13/08 10:07 AM
06/13/08 10:07 AM
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Joined: Jul 2007
Posts: 11,836
Florida
mopar346
Let me tell ya about fat chicks!
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Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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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????
Careful, your character's showing!
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Re: How to determine a real Six-Pack block?
[Re: ScottSmith_Harms]
#72708
06/13/08 11:32 AM
06/13/08 11:32 AM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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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 
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Re: How to determine a real Six-Pack block?
[Re: gastongremlin]
#72709
06/13/08 11:53 AM
06/13/08 11:53 AM
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Joined: Jan 2003
Posts: 74,937
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,937
U.S.S.A.
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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 ???
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Re: How to determine a real Six-Pack block?
#72710
06/13/08 11:53 AM
06/13/08 11:53 AM
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Joined: Jan 2003
Posts: 74,937
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,937
U.S.S.A.
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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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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. 
