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#1
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1967 GTO rear coil spring install questions
Pretty sure 1967 didn't use attaching plates at the bottom like '66...correct? Wish they did. Seems like they should be anchored down at some point rather than free floating, but this is for a concours restoration and want it done just like factory originals.
Second question: Does the orientation of the coils matter? Been experimenting with different positioning of the spring ends since there isn't an indentation in the perches like the front springs have. Seems to fit best on the right side with the end of the last coil (at bottom where it meets the differential perch) directly pointing toward the rear of the car. Just the opposite on the left side with the end of the coil directly pointing toward the front. Does this sound right? If possible, can someone check their original spring location for me? Appreciate all opinions and comments. |
#2
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Also , oil amount is critical. Dont over fill oil in this system .Remember the little tube for the POA is an oil bypass tube because the POA shuts down the flow before icing, but the oil was allowed to bypass to keep the compressor lubed.
Probably5-7 ounces TOTAL in the system will be fine. Another guy I know had the same "Tube" conversion and I think he had too much oil in it. It hydrolocked the compressor . Game over. Not trying to scare you, just wanted to make you aware to measure the oil amount in the compressor and the rest of the system when you seal it up. |
#3
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The '67 and up sit on the pedestal that keeps the spring in place. It will not come off because the shock will not fully extend enough for that to happen. If it did, you would not be able to jack up the car to change a tire. So if that were to happen by chance, then you have the wrong shocks. I am also assuming you have the rubber insulators at the top of the springs. |
#4
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__________________
1966 Pontiac GTO (restoration thread) 1998 BMW 328is (track rat) 2023 Subaru Crosstrek Limited (daily) View my photos: Caught in the Wild |
#5
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So the next question is, are rubber insulators used like the 1968 and up springs? I see them listed for 1967 use. Picture is of my '68 rear frame and you can see the top spring perch looks more like a doughnut, no orientation pocket. |
#6
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Quote:
__________________
1966 Pontiac GTO (restoration thread) 1998 BMW 328is (track rat) 2023 Subaru Crosstrek Limited (daily) View my photos: Caught in the Wild |
#7
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Here is a PDF for the '67 rear suspension and coil removal and it mentions the fitting of the spring in the pocket and rubber insulator - http://thefirstgensite.com/library/67service/PO67S4.pdf |
#8
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My 65 used the same rubber/plastic on the top.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#9
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Mine does not have those orientation pockets in the perches. Fairly early built '67 model (November, 1966)...frame built by Parrish. Wonder if it depends on the frame manufacturer?
P.S. The rubber insulators I bought don't look like the ones that follow the coil curve. Here is a photo of the kind I have: https://www.ebay.com/itm/66-67-68-69...S/392306080545 |
#10
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The frame for my '66 was made in June of '66 Not sure who made it, though. The body came from the Pontiac, MI plant, and the frame also says "PON". The question of variations in frame configuration based on assembly location is a good one, though. I've seen other differences in this regard.
__________________
1966 Pontiac GTO (restoration thread) 1998 BMW 328is (track rat) 2023 Subaru Crosstrek Limited (daily) View my photos: Caught in the Wild |
#11
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