LS6 POP and Arlington info [Archive]

chevel

Mar 18th, 10, 2:51 PM

DaleM

Mar 18th, 10, 3:44 PM

Hey guys,

I'm looking at an LS6. It has a POP but I want to make sure it is a real one as I know lots of them are being punched out all over. Are there any dead giveaways for a fake that anybody knows of? I'm assuming in 1970 the name etc of the original buyer was actually stamped into it as opposed to those little label maker stickers. Also, I noticed that the zip code is on this one...I know that a 69 POP didn't have the zip code. Looks old but some guys are magicians.

The original buyer's name, address (of some kind) and date were indeed on a stick-on label and not stamped into the POP itself. If the POP is still attached to the warranty book and the warranty book still has the dealer name on it, it's probably good - although bad guys are getting better at it all the time. The assembly plant created the POP, the dealer added the buyer's name and other info so it may very well have a zip code. I have photos of quite a few POPs, here are some from the 70 model year.
http://chevellestuff.com/1970/chevelle/tags/pop.htm

Also, it's an Arlington built car. I have some concerns about the length of time between the block casting date, the block stamp, and the head casting dates. The block cast date is 4 months off the block stamp. The stamp is in line with the body date. The heads are worse as they are cast 5 months in advance of the block cast and 9 months off the motor stamp. Another aspect that perked my curiousity is the rear end is cast date and stamp is right in line with the block cast date....seems like they go together but the block stamp is off. I've heard that there are other examples of Arlington LS6's with numbers that seem a bit off, but looking for other opinions or info that some of you might have.

Any help is much appreciated.
Haven't had enough experience with Arlington cars to say one way or the other but there are some very good 70 gurus here that'll be happy to help. I'd suggest you give a bit more info about the car as far as casting dates on various parts go and maybe a photo of the engine pad showing the engine build date and the body trim tag date.

I would extend an invitation to register the car with the LS6 Registry, http://ls6registry.com, to help preserve data on LS6 Chevelles.

bcmiller

Mar 18th, 10, 5:23 PM

I am not a 70 guru, but casting dates of components are "typically" within 3 months of th the build date and within 2 months or less of each other. Engine assembly date typically within a month of cast date. But there are always a few exceptions.

Give us specific dates and that will help more. Also if you have pics of the block stamp, post it and you will get some expert advice on if it looks legitimate or not.

Zip code may or may not be on there. It depends how each particular dealership handled it.

danvil1

Mar 18th, 10, 9:39 PM

were all protect o plates stamped backwards or proper side up.
i see variations of both?

DaleM

Mar 18th, 10, 10:50 PM

were all protect o plates stamped backwards or proper side up.
i see variations of both?
They were all reverse stamped as far as I know. Ones you see displayed, like those on my site, are mirrored so they're easily read.

danvil1

Mar 18th, 10, 11:31 PM

They were all reverse stamped as far as I know. Ones you see displayed, like those on my site, are mirrored so they're easily read.
thanks Dale,no wonder all your photos are easy to read,makes sense.:yes:

Diamond Judge1

Mar 19th, 10, 2:55 PM

Hey guys,

Also, it's an Arlington built car. I have some concerns about the length of time between the block casting date, the block stamp, and the head casting dates. The block cast date is 4 months off the block stamp. The stamp is in line with the body date. The heads are worse as they are cast 5 months in advance of the block cast and 9 months off the motor stamp. Another aspect that perked my curiousity is the rear end is cast date and stamp is right in line with the block cast date....seems like they go together but the block stamp is off. I've heard that there are other examples of Arlington LS6's with numbers that seem a bit off, but looking for other opinions or info that some of you might have.

Any help is much appreciated.

The spread of casting dates of castings vs. production date of engines has nothing to do with Arlington assembly. All engines were assembled in Tonawanda, and the date spread has nothing to do with the car assembly plant, and has everything to do with the engine assembly plant. I am telling you, this is more common than many people want to believe. We have seen many low mileage, original examples, with the dates spread all over the map, blocks and heads included. As long as they are before the production date of the component they went on, that is OK. LS-6 cars are known for this, and the components put on later, such as the alt carb, are the same way. Check out the thread in Tag team about a recent removal of an August 69 #837 Alt from an April car!!!! My own car has the same date range. It just did not matter to the production facility, the stuff did not get sour, or get stale. My personal opinion was that they overproduced many components in late 1969, and used them up through the end of 1970. It was not a perfect world back then.

Now, some of the other stuff you mentioned does sound suspicious, and you are right to be careful. Just don't use the casting dates as being early to rule out the deal.

Jeff Dotterer
Dated Components
Diamond Restored Judge

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