[Greg Reid]

Originally Posted by johnta1

I'd check that date code again. The '7' is probably a '9'?
B019?

There were no 9790071 block castings in 1967.

That's what I was thinking, that last digit is probably something other than a 7.

[goat69SD]

Originally Posted by Greg Reid

That's what I was thinking, that last digit is probably something other than a 7.

Was there anything in 77? I have looked again I cant see anything but a 7 That part looks very clear. But it wouldn't be the first time I was wrong .

[goat69SD]

Would this be the engine listed here except with a 4bbl manifold now?
1969 400 YD 9790071 2 Bar Carb 290 Full-Size

[Greg Reid]

Maybe if it's a D (April) it may have been cast for the '68 models? 9790071 is a casting that shows up in '68. Some of the numbers guys will figure it out.

[Greg Reid]

Well, to settle whether he's reading it upside down or not, and someone can correct me here if I'm wrong, but I believe if you're looking at it from the top, the top of the script should be towards the intake and and bottom towards the firewall.

[Baron Von Zeppelin]

It could also have been placed/cast upside down at the foundry.
idunno

But you are describing the correct viewing angle.
To say, standing behind the engine and reading the date code.

[goat69SD]

Originally Posted by Greg Reid

Well, to settle whether he's reading it upside down or not, and someone can correct me here if I'm wrong, but I believe if you're looking at it from the top, the top of the script should be towards the intake and and bottom towards the firewall.

The engine is in the car and you are so right. I looked at it backwards it is L108.

[Baron Von Zeppelin]

2.11 and 1.77
Screw In Studs and Guide plates
Way better than what the 69 YD engine would come with.
They would have to have been shaved a ridiculous amount to make them closed chamber.
If so, that will be a problem with pump gas , amongst other possible problems.

Pontiac closed chamber heads stopped in 1967.
Just a pure solid fact from way back is all that is.
Possibly your perception is relating to them as closed chamber , compared to another brand.
That is why I pointed it out.
Been specializing in Pontiacs for almost 40 years now nonstop.

The intake is a late 68 all through 69 part number xxxx234
Congrats
Date code will tell what exactly

[goat69SD]

Originally Posted by Baron Von Zeppelin

2.11 and 1.77
Screw In Studs and Guide plates
Way better than what the 69 YD engine would come with.
They would have to have been shaved a ridiculous amount to make them closed chamber.
If so, that will be a problem with pump gas , amongst other possible problems.

Pontiac closed chamber heads stopped in 1967.
Just a pure solid fact from way back is all that is.
Possibly your perception is relating to them as closed chamber , compared to another brand.
That is why I pointed it out.
Been specializing in Pontiacs for almost 40 years now nonstop.

The intake is a late 68 all through 69 part number xxxx234
Congrats
Date code will tell what exactly

Trust me I don't doubt you. They were very small chambers the did not open to the full cylinder size. At any rate most dates seem to be accurate to 69. Was those numbers on the picture of the head the date code? G029?

[Greg Reid]

The intake date code is actually underneath that fuel line in your photo, right next to the water neck and it's in the exact same format as the date code by the distributor hole.

[b-man]

Closed chambers on the top typical of 1967 and earlier heads (1964 9770716 pictured) and open chambers on the bottom typical of 1968 and later heads (1970 #13 pictured).

[goat69SD]

Originally Posted by b-man

Closed chambers on the top typical of 1967 and earlier heads (1964 9770716 pictured) and open chambers on the bottom typical of 1968 and later heads (1970 #13 pictured).

Thanks these are very different than Ford or Mopar. I see my confusion.

[Baron Von Zeppelin]

Here is another shot of a closed chamber head.
Just enough of a pocket for the valves.

69 YD 400 2bbl Automatic Full size car application is your block code , yes.
Catalina and very basic models of full size.
Lowest 400 on the totem pole.
But all 9790071 blocks are identical regardless of their stamp code.
Exact same block as a 69 Ram3 4spd WS code rated at 366hp

The #13 heads are 1970 model only.
Yours are extremely early production in July 1969
We have seen this trend before with 1970 cast parts.
I had a complete 70 GPrix XH/13 engine and all of it had G dates
In other years a July casting would still be for that years production model.
Some things vary from one year to another.

Your intake part number was used during 2 years.
Part of 1968 & 1969
From around March 1968 ,,,, all the way through all of 1969 production.
You will just have to look at the casting date on it to determine.
With luck it might be an H date of 68 , and date correct for the car.

[Baron Von Zeppelin]

Your Block , Heads , Intake , Exhaust Manifolds put your engine as comparable equipment to a Ram3 engine.
As far as the actual cast iron pieces.
Just because your block code sucks - it doesn't limit its power .
You can put a sticker over it.

Ram3 had special carbs and distributors that you don't want to know the going prices.
But ordinary pieces can be tuned to work just as well.
Not much cam involved with Ram3 engines , anything aftermarket is usually an upgrade.
They had about .410 - .420 lift

[goat69SD]

Originally Posted by Baron Von Zeppelin

Your Block , Heads , Intake , Exhaust Manifolds put your engine as comparable equipment to a Ram3 engine.
As far as the actual cast iron pieces.
Just because your block code sucks - it doesn't limit its power .
You can put a sticker over it.

Ram3 had special carbs and distributors that you don't want to know the going prices.
But ordinary pieces can be tuned to work just as well.
Not much cam involved with Ram3 engines , anything aftermarket is usually an upgrade.
They had about .410 - .420 lift

Well I just want the car to be as close as I can make it. I would never try to make it what it is not and that is original. This has made me feel that the car can be as close as possible for myself. As far as the distributor I installed an electronic one to make it more user friendly. Carb wise I think the one I have is off a 455. I am just building a tribute Judge GTO. There only original once and this one is not and I am ok with that. I just want it to be saved and be a good tribute. I bought a complete RAIII kit for the hood and air cleaner. I personally was ok with the engine .I paid 400.00 for it. But found it very interesting to learn about what it was and where it came from. And I do thank everyone for their effort in helping me. Now if you will just help me find a 67 GTO LMAO!

[Greg Reid]

I'm enjoying the fact that you care enough about preserving the Pontiac engine that you are willing to learn about it. So many people now just toss an LS or SBC engine in there and call it done!

[Shiny]

Welcome!

For $400 you have an amazing engine that creates envy and repels shame.

Not to fight back, but IMO the term "suck" is not even close to accurate.

Congrats!

[johnta1]

What is Built B series cars?

B-Body's are the big cars like Bonneville, Catalina and possibly the Grandville.

GP is a G-body. (GTO's - A-body, Firbirds are F-body)

[goat69SD]

Originally Posted by Greg Reid

I'm enjoying the fact that you care enough about preserving the Pontiac engine that you are willing to learn about it. So many people now just toss an LS or SBC engine in there and call it done!

I respect what they were. That is why I have more than one brand. They all offered something in the muscle car wars. I was a teenager when all that was taking place. If you install a modern engine you loose what they were in the day.

[mgarblik]

Originally Posted by Greg Reid

I'm enjoying the fact that you care enough about preserving the Pontiac engine that you are willing to learn about it. So many people now just toss an LS or SBC engine in there and call it done!

X2 on that comment. So many people who are not die hard "Pontiac People", would take one look at the Pontiac engine, spend 15 minutes on the Summit Racing site looking at the prices of various LS and SBC parts compared to a traditional Pontiac and rip the Pontiac engine out and be done with it. As I said in my welcome post, there is allot of passion for the Pontiac V-8 engine and the hand full of us still running them are proud of the underdog, taking the road less traveled way to performance. You are to be applauded for caring enough about the brand to keep a Pontiac engine under the hood and preserve history. There is a wealth of knowledge here and some parts you may need as well. Good luck with the car.