[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!