[The Boss]

Originally Posted by 2manyT/A'S

Were you the original owner?

Back in the day,it was a pretty common deal to get "exchange" heads off the shelf as opposed to rebuilding existing ones. (less down time)

No

And for the record, for however good Pete's book is, it is littered with errors - mine has notes on almost every page in the Identifying Pontiac Pieces section.

[2manyT/A'S]

Originally Posted by The Boss

No

And for the record, for however good Pete's book is, it is littered with errors - mine has notes on almost every page in the Identifying Pontiac Pieces section.

I agree,there are some errors & gray areas in Pete's book,but in my mind,it's STILL the MOST comprehensive listing of Pontiac part #'s,casting #'s, etc. available & my hat is off to him for putting it together. (over 20 years ago).

My original (autographed) copy from 1990? is falling apart but i'm into almost on a daily basis. It's the first book I reach for to confirm #'s.

[RAFormulas]

All 70 RAIII cars received the 12 heads, also manual cars with WT engines got the 12 heads.

All three of my 70 Formulas have the 12's

13's were for non-RA auto cars.

[The Boss]

Originally Posted by 2manyT/A'S

I agree,there are some errors & gray areas in Pete's book,but in my mind,it's STILL the MOST comprehensive listing of Pontiac part #'s,casting #'s, etc. available & my hat is off to him for putting it together. (over 20 years ago).

My original (autographed) copy from 1990? is falling apart but i'm into almost on a daily basis. It's the first book I reach for to confirm #'s.

I would absolutely agree!

I'm on my second copy - the first one was falling apart.

[70FormulaCA]

Originally Posted by The Boss

I would absolutely agree!

I'm on my second copy - the first one was falling apart.

What's the name of Pete's book and where can I purchase it? I purchased "How to Build Max-Performance Pontiac V-8s" by Jim Hand. Anyone use this book? Is it useful?

[The Boss]

Originally Posted by 70FormulaCA

What's the name of Pete's book and where can I purchase it? I purchased "How to Build Max-Performance Pontiac V-8s" by Jim Hand. Anyone use this book? Is it useful?

Here you go...

http://www.petemccarthy.com/

[shakerz]

Any input as to the statement that 13's are not RAIII heads though they are passed off as such sometimes and could be found stock on Catalinas and other non RA cars?


thanx guys.

[Formulabruce]

Originally Posted by shakerz

Any input as to the statement that 13's are not RAIII heads though they are passed off as such sometimes and could be found stock on Catalinas and other non RA cars?


thanx guys.

13's showed up on the high horsepower GP's, auto, and other 400 auto cars.
I know GM replaced 12's with 13's under warranty, They are so close in specs.
The 13's were in good supply. A friend ordered a pair of #12'S in 75, and got 13's
The reason they are often called RA heads is because they are, for the most part, identical to the #12 head.
I have only seen 13 heads on 4 BBL engines
my 2 cents