68 -70 340 exhaust manifolds
#2726930
12/25/19 10:29 PM
12/25/19 10:29 PM
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Joined: May 2010
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Sixt8Chrgr
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I am looking to purchase the above and have come to realize that some manifolds have the casting number with the pentastar logo and some manifolds have no pentastar. Also the date codes on some manifolds are very clear on the manifold and some manifolds don’t have any? Are the manifolds without the PENTASTAR service replacements?
Thanks!
Last edited by Sixt8Chrgr; 12/25/19 10:30 PM.
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Re: 68 -70 340 exhaust manifolds
[Re: Alaskan_TA]
#2726934
12/25/19 10:47 PM
12/25/19 10:47 PM
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Joined: Jan 2003
Posts: 43,507
Round Lake Beach, Illinoisy
Rhinodart
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Rhinotruck
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Round Lake Beach, Illinoisy
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There should be numbers in the back near the bend in the 1970 style drivers side manifold. Pretty much all 68-69 manifolds have the numbers on the front surface.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: 68 -70 340 exhaust manifolds
[Re: Rhinodart]
#2726944
12/26/19 12:02 AM
12/26/19 12:02 AM
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Joined: Jan 2014
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FL
moparwizard
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I have a original 340 assembled in April of 1970, that does not have any casting numbers or dates on either manifold.
Last edited by moparwizard; 12/26/19 10:37 AM.
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Re: 68 -70 340 exhaust manifolds
[Re: moparwizard]
#2726953
12/26/19 01:01 AM
12/26/19 01:01 AM
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Joined: Mar 2011
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Cut and Shoot, TX
kentj340
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Cut and Shoot, TX
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1969 Barracuda 340, scheduled build date 11/8/68, actually built late November 1968, engine assembled 11/1/68. No Pentastar on one manifold that was cast 10/15/68.
If you don't see two dolphins, you need a vacation.
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Re: 68 -70 340 exhaust manifolds
[Re: moparwizard]
#2726994
12/26/19 09:46 AM
12/26/19 09:46 AM
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Joined: May 2010
Posts: 177
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Sixt8Chrgr
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I have a original 340 assembled in April of 1970, that does have any casting numbers or dates on either manifold. Will you confirm? Does or does not have the date codes? My car is a March 11 built AAR Thanks
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Re: 68 -70 340 exhaust manifolds
[Re: Sixt8Chrgr]
#2726997
12/26/19 10:01 AM
12/26/19 10:01 AM
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Joined: Jan 2003
Posts: 43,507
Round Lake Beach, Illinoisy
Rhinodart
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Rhinotruck
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Here is a pic of the date code on my 70 340 manifold
Last edited by Rhinodart; 12/26/19 10:01 AM.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: 68 -70 340 exhaust manifolds
[Re: moparwizard]
#2727155
12/26/19 06:24 PM
12/26/19 06:24 PM
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Joined: Jan 2003
Posts: 43,507
Round Lake Beach, Illinoisy
Rhinodart
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Rhinotruck
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They could be the reproduction manifolds, though the passenger side does not come with the flapper it could have been added.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: 68 -70 340 exhaust manifolds
[Re: Rhinodart]
#2727193
12/26/19 08:07 PM
12/26/19 08:07 PM
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Joined: Jan 2014
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FL
moparwizard
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They could be the reproduction manifolds, though the passenger side does not come with the flapper it could have been added. Not repos, here's a pic from a few years ago in the car with the worn out riser wired open.
Last edited by moparwizard; 12/26/19 08:09 PM.
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Re: 68 -70 340 exhaust manifolds
[Re: moparwizard]
#2727255
12/27/19 01:34 AM
12/27/19 01:34 AM
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Joined: Jan 2003
Posts: 43,507
Round Lake Beach, Illinoisy
Rhinodart
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Rhinotruck
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They could be the reproduction manifolds, though the passenger side does not come with the flapper it could have been added. Not repos, here's a pic from a few years ago in the car with the worn out riser wired open. Pictures always help, where were those earlier? I have never seen a set without casting numbers and date codes, that is why I said that and I have probably seen over 1000 sets. Anything is possible when you talk about Chrysler... 
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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Re: 68 -70 340 exhaust manifolds
[Re: Alaskan_TA]
#2727257
12/27/19 01:39 AM
12/27/19 01:39 AM
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Joined: Jan 2003
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Round Lake Beach, Illinoisy
Rhinodart
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Rhinotruck
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Round Lake Beach, Illinoisy
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Only if the reproductions come with rust pits? Have you done a metallurgical test to see if they are cast with the same process as the originals? I didn't think so... 
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
JB Rhinehart, Realist
A-Body's RULE!
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