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Old 09-09-2019, 08:25 PM
MUSLCAH MUSLCAH is offline
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Default 64 GTO ..PHS Question...

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Could someone tell me what is the difference between the last 2 lines on this PHS .... J and T . Thanks

  #2  
Old 09-09-2019, 09:50 PM
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64-3Deuces 64-3Deuces is offline
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Well, unless I'm missing something, "J" is the auto trans used on a non air conditioned GTO and the "T" is used on an air conditioned (AC) GTO.

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Old 09-09-2019, 10:46 PM
MUSLCAH MUSLCAH is offline
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Quote:
Originally Posted by 64-3Deuces View Post
Well, unless I'm missing something, "J" is the auto trans used on a non air conditioned GTO and the "T" is used on an air conditioned (AC) GTO.
No AC in the car or on the PHS ........

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Old 09-10-2019, 06:57 AM
8LUG 8LUG is offline
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Maybe they highlighted the wrong line when doing your PHS

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Old 09-10-2019, 08:34 AM
MUSLCAH MUSLCAH is offline
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Originally Posted by 8LUG View Post
Maybe they highlighted the wrong line when doing your PHS
That’s what Iam thinking....going to give them a call....thanks

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Old 09-10-2019, 09:31 AM
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64-3Deuces 64-3Deuces is offline
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Well I guess I was missing something, no AC on the car. Agree that it sounds like the wrong line highlighted.

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Old 10-16-2019, 05:17 PM
John V. John V. is offline
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The PHS trans codes list is not a factory list. AFAIK it was something generated by PHS. I see they continue to erroneously identify the Code 9 as a close ratio M21. The ONLY '64 close ratio 4 spd was the Code 8, it could ONLY be ordered with the Tripower, 3,90, metallic brakes, etc. It did NOT become available until at least April and in years of searching, I have only identified ONE '64 GTO that was equipped with the Code 8 close ratio. The 3.90 axle was available with or without Tripower and could be ordered from the start of '64 production. When you ordered the 3.90 with the 4 spd, you automatically got the Code 9. It was a wide ratio Muncie, the only thing that changed was the internal speedo drive gear. With 3.90, the trans used a 6 tooth speedo drive gear. All other factory available gear ratios used the 8 tooth speedo drive gear in the 4 spd. Many GTO guys and researchers surmised that the wide ratio was substituted when they ran short of the close ratio. That was a myth. When released late year, the close ratio was given p/n 9777000, which would be on the p/n tag attached to the side cover. This p/n was not yet issued when the '64 model year commenced. The use of the Code 9 wide ratio with 3.90 axle was by design. It would be used in a Tempest when equipped with 3.90 and 4 spd (that WAS possible in certain applications), not just the GTO.

I mentioned the T code in my long ago Kansas City and Baltimore decode article published in Smoke Signals.

I identified it as the code for a 389 auto trans with A/C. I speculated that it may have been a mid year change since there was no mention of an A/C specific auto trans for the 326 or 389 in the Dec 19, 1963 printing of the Tempest Inspector's Guide, however there are specific trans p/ns listed for each of these applications (389 and 326) when equipped with A/C in the '66 Master Parts Catalogs.

The J code is the Primary Trans code made part of the GTO Engine Codes, ie, 77J and 79J.

In my research, I did not have very many records for A/C A bodies (or auto trans records for that matter) so the application for the T code was not very definitive.

Depending on where your car was built, I would be curious to know more about your build. Any chance you can post the PHS record?

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Old 10-17-2019, 05:06 PM
JAKE 64 JAKE 64 is offline
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Quote:
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Attachment 519819...

Could someone tell me what is the difference between the last 2 lines on this PHS .... J and T . Thanks
For 1964

What is the assembly date and any chance this car came equipped with the tri-power option?

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Old 10-17-2019, 07:06 PM
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Quote:
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For 1964

What is the assembly date and any chance this car came equipped with the tri-power option?
Tri Power ...Yes

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Old 10-20-2019, 10:26 PM
JAKE 64 JAKE 64 is offline
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Muslcah

I haven't had time to look for my notes, and will be travelling again this week. However, I have seen instances where the tri-power equipped automatic transmission cars have been identified with the T code, rather than the J code. Without my notes, I do not know if this was started sometime during the year or was utilized throughout. And even if I find these notes, I am not sure whether I have enough examples to establish a dateline.

What is the assembly date for this vehicle?

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