How to ID ‘69 Ram Air III Heads - Pontiac GTO Forum
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post #1 of 3 (permalink) Old 03-26-2018, 02:03 PM Thread Starter
 
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How to ID ‘69 Ram Air III Heads

Good afternoon, my ‘65 GTO has ‘69 Ram Air III heads... I’m told by the previous owner. I’m going to install new header exhaust gaskets and wanted to be sure I get the right size and shape for the exhaust ports. I believe these heads should have a 48 cast on the center exhaust ports but... the numbers are not very legible. How can I tell for sure, is there another number to go by? Also, what type gaskets are recommended for iron heads and Hooker Headers? Thanks!
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post #2 of 3 (permalink) Old 03-26-2018, 07:42 PM
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Step 1) Look for the date code. This is 4-characters, 1 letter followed by 3 digits. It may be 'inside' under the valve covers. The letter indicates which month they were cast with A being January, etc., followed by a 2 digit day, and a 1 digit year. The engine foundry 'switched over' and started making parts for the next model year about mid-year previous, so for model year 1969 your date code should either begin with an A-G and the last digit should be a 9, or it should be higher than 'G' and end with an 8.

You have to nail the model year first because they 'reused' the other casting numbers on the exhaust ports to mean different things in different years.

Step 2) For RA III 1969, the head casting should be either 48 (manual transmission car) or 62.

As for header gaskets, I've been using Remflex with very good results.


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post #3 of 3 (permalink) Old 03-30-2018, 05:33 PM Thread Starter
 
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Bear, Thanks!
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, LeMans & GTO Engine Tuning and High Performance

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