1969 GTO brackets - Pontiac GTO Forum
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post #1 of 8 (permalink) Old 04-03-2012, 09:32 PM Thread Starter
 
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1969 GTO brackets

I have a 1971 455 with 1971 400 “96” heads. The previous engine in the car was a 1973 400 engine. To use the alternator and power steering pump, which I’m assuming are from a 1973 including water pump. Do I need 71 or 73 mounting brackets? I have 69 brackets on hand.

Thanks,

Joe
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post #2 of 8 (permalink) Old 04-04-2012, 01:45 PM
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Assuming the heads have all the bolt holes on their fronts for mounting accessory brackets...

You should be able to use whatever you like: 71, 73, or 69. What matters is not trying to mix and match components from different years. For example, if you use 69, then use 69 "everything" --- brackets, all the pulleys, acessories, etc.

Bear

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post #3 of 8 (permalink) Old 04-04-2012, 05:01 PM
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Keep in mind the brackets may have changed mid year 69, so the mid year 69 thru 73 and maybe newer should use the same brackets.

In early 69 pontiac used a 4" water pump and changed to 4.5" mid year.

Randy


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post #4 of 8 (permalink) Old 04-04-2012, 05:12 PM
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Quote:

In early 69 pontiac used a 4" water pump and changed to 4.5" mid year.
Yep they sure did, but the brackets didn't change when they did that. What did change was they went to a "deeper " water pump pulley to maintain all the alignments.

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post #5 of 8 (permalink) Old 04-04-2012, 05:34 PM
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Originally Posted by BearGFR View Post
What did change was they went to a "deeper " water pump pulley to maintain all the alignments.

Bear
Do you have a part number for that deeper water pump pulley?

Randy


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post #6 of 8 (permalink) Old 04-04-2012, 09:55 PM
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Yep, that would be 9799127 without a/c, 9799130 with a/c.

Why do I know? because I went though -all- of this with my 69. It was originally an early production short pump snout car, I replaced it with a long snout aftermarket high flow pump, and as if that wasn't enough grief - I also went to an SFI-rated balancer that wouldn't allow the original a/c compressor drive crank pulley to fit. Oh... I had -lots- of fun

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post #7 of 8 (permalink) Old 04-05-2012, 09:06 PM
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Thanks, I have an early 69 (9790071) block in my 67, After going thru several sets of pulleys I finally found the 4" WP from Ames.

Randy


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post #8 of 8 (permalink) Old 04-24-2012, 02:07 AM
 
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your 73 brackets should all work on the 71.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

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