intake manifold # 123648 3 What's it from and why is it on MY car?

Today I had time to jot down my intake number 1236483 . I have been told I need a 1238323 for a 72 GS 455 from Cali. I've also heard recently that Cali cars had an EGR valve. Does a 1238323 have provisions for an EGR or is this a correct number with incorrect info? Signed, Clueless in Cleveland.( Kevin) o No:

 

Kevin,
I got this info from the Factory 72 Buick Engine book,

72 455 intake # 1239924 (A.I.R. less EGR)
72 455 intake # 1238397 (A.I.R. with EGR)

That is all the info I have.
Duane

 

the info I have lists a 1238323 as a 72 intake.
dont even have a listing for 1236483, but a 71 intake is 1236403 are you sure its an 8? if its a 0 you have a 71 intake.

 

You need a 1238397 to be correct for '72 455 Calif - if that's what's you need. On the other hand, check date codes and other evidence and perhaps the one you have is correct for the car.

 

Situation getting worse!!!!!

Now I'm up to 5 different casting numbers , being told each one is correct. I didn't buy an intake when the first person told me what was right because I wanted to confirm with another source, and it has led to more numbers, very few are the same. Should it have an EGR or not??? The numbers I've been told could have come from another 72 455 car , but I'm guessing not a GS. If someone has an original 72 455 GS Cali emissions , please help me settle this.

 

Actually, I concur with Duane. We both gave you accurate info. I'm going by what my '71 GM parts book says. I usually believe the book first. Hope to help.

 

Kevin,
The information that I supplied to you came from a Buick Factory booklet titled "1972 Buick Engines Factory #36". This is one of the small booklets that the Buick Quality Control Engineers carried in their pockets in 1972 to actually build both the 350 and 455 motors in the Flint Michigan engine plant. The date on the booklet is August 4, 1971, and I seriously doubt you will find any info that is more accurate then this.

As far as the EGR valve,
If your car was built for use IN California, then it had an EGR valve.
If it was built in calif, but intended for use in another state, like Arizona, then it did not have an EGR valve.

An easy way to tell the 70,71, & 72 455 intakes apart is by looking at the number of bolts used to fasten the choke assemblies.
70's use 1 bolt
71's use 2 bolts
72's use 3 bolts
and I have no idea on 73 and newer manifolds.

Now, I cannot swear that the intake casting numbers were not changed sometime during the production year, but what I gave you is accurate info.

If you don't want to believe me, well that's up to you.
Signed, Knowledgeable in PA.
Duane

 

i would believe duane,he know his stuff!!!

 

Kevin,
I am not trying to be forceful, just trying to help.
Duane

 

Help VERY appreciated!!!

Thanks, Duane! I'm not getting the vibe that you're being forceful at all , so no apology needed. I simply asked a question and received different answers , none of which were meant to be misleading in any way, I don't think. Members just told me what they had and what they thought was right. If I purchased the first manifold I was told was right for my car, I'd be stuck with it , as that number was different from the one you gave me. Same with the next 2 numbers. I have 2 members checking their cars , that are original and are going to get back with me on their numbers. Hopefully whatever I learn I can pass along in the future. I'll keep everyone updated. Thanks everyone who has helped. :TU:

 

Kevin,
Do let us know what you find. Like I said they may have changed the castings during the production year, and the book will not show that because it was printed at the beginning of the run.
Duane

 

It looks to me as if he needs to determine if the car originally came with California emissions. To know for sure can't this be done through the Sloan Museum? o No:

 

We have an all original unrestored '72 Stage 1 that was built in Fremont, CA, and sold new in CA. It does have the option for the emissions package and the intake does have an EGR valve. I will try to take a look and get the intake casting number as well as the date and post it here.

 

Yet More Numbers!!!!

Here's the latest batch. A board member gave me a website with casting numbers and they are 1239925,1243020,1245059 and 1245375 . All are said to be 1972 455-4 . Nothing about California emissions , EGR, Models , trans, A/C , Stage 1 or anything that would take these numbers out of the running. As far as the Sloan Museum , can they determine delivery from vin alone as I have removed both front and back seats and found no build sheets. I don't have a P.O.P. or anything other than vin & trim tag.Thanks Gary for looking at your intake when you get to it.

 

the numbers I gave you came from info I printed from the Atlanta buick websight. I just assuumed that they where correct but I have no validation and no Idea where the numbers printed came from. I would tend to Beleive Duanes information directly from the manufacturer.
I was just trying to be helpful and I hope i havent caused any Problems.
Do let us know what you find out is correct. :beer
Larry

 

My 72 Stage 1 was a late production car (06C - with the seat belt warning light on the dash), built in Flint and sold to a Texas dealer.

The intake that I have that I believe to be original (date coded F-15) has the casting # 1239925-1, AND has the EGR valve. Notice it is one digit off from Duane's info for a non-EGR application? Didn't something change mid year to mandate the seat belt warning, and could that have also included emission changes?

I hope that helps.

 

Thanks for your comments , James. Mine is also a seat belt warning light , Flint car , but I don't know the build date. A board member offered me his B-1239925-1 manifold off of a 72 Stage 1. I'm going to take it and if I find it to be wrong, let him have it back , same price when I find correct one, but I'm hoping that's it . I am also going to get in touch with the Sloan and see if I can find the dealer who delivered my car new.

 

Sloan Documented , Cali car.

I just received the Sloan Documents confirming that my car was Flint built, delivered with option E5 EXHAUST EMISSION SYSTEM ( REQ. IN CALIF. ONLY). So now I need to sell the 72 Stage 1 non-EGR manifold I bought :spank: and find the right one. I'm not in a big hurry , so I'm not going to post in parts wanted yet , but if someone sees this and has a correct one, I'd be interested, but as the summer is winding up, it can wait till next year.

 

Our car also has the E5 "Exhaust emissions system" option, but it was built at the Fremont, CA assembly plant (and sold in 1000 Oaks, CA). Wonder why Buick built yours in Flint if it was intended for CA? Does the sloan info show the dealer location? Is yours a convertible? (I think all stange 1 convertibles were built in Flint even if being sold in CA.)

Good luck with your search for an intake, I'm sure someone on here has a spare.

 

Yes Convertible,No Stage 1

Gary ,I was hoping you could give us the # from your intake. I got the picture you emailed me but I can't read any numbers. My car was Flint built , delivered to Zone 24/ Dealer Charged 340 if that helps. o No: