Old 11-15-2019, 12:59 PM
dataway's Avatar
dataway dataway is offline
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Default 68-72 Core Support

People selling the reproduction 68-72 GTO core support should make buyers aware that besides the modifications necessary for a 68, that the support has to be totally reworked to fit.

The top plate and the bottom rail on the reproduction are parallel, on the OEM piece the support tilts 9-10 degrees forward with the bottom rail being horizontal and the top plate 9-10 degrees off horizontal. To fix this requires drilling the welds and removing the bottom rail and rewelding it to achieve the proper tilt of the core support. Rewelding requires additional metal to be added to fill the gap left at the bottom after positioning it correctly.

Image below is from the 69 assembly manual that shows the proper lean angle.

On the reproduction the bottom rail (point BD) and the top plate (point BC) are both exactly horizontal.

This is a major flaw and this item should not be sold without the buyer knowing it will require extensive work to fit properly.

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Old 11-21-2019, 04:59 PM
Two_70_Converts Two_70_Converts is offline
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That's good information. How is the fit otherwise?

Old 09-10-2020, 07:10 PM
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pontiacmark pontiacmark is offline
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Location: Spring Hill, TN
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So I am guessing the same would apply to a 70? Wondering if it might be better just to replace the typical rust under the battery tray.

1970 GTO 400 Atoll Blue, PS, PDB, A/C
Was M20 4 speed, now has Keisler RS600 5 speed.

Last edited by pontiacmark; 09-10-2020 at 07:10 PM. Reason: Spelling
Old 09-10-2020, 08:35 PM
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Half-Inch Stud Half-Inch Stud is offline
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Typical rust is at the 2 lower mounts.

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Old 09-11-2020, 12:22 AM
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OG68 OG68 is offline
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There are patch panels available for the lower mounts. Bought mine from Inline Tube.
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1968 GTO (Thanks Mom)
2006 Silverado
2007 SRX

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