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Forum: 66-67 GTO Tempest & LeMans TECH 10-27-2020, 07:24 AM
Replies: 8
Views: 3,054
Posted By Mike O'Neill
Thanks for the replies. I decided to keep the...

Thanks for the replies. I decided to keep the pump with 5/16" inlet, and get a reducing hose coupling 3/8 > 5/16. Could not find such a coupling locally, so had to order one from Amazon.
Forum: 66-67 GTO Tempest & LeMans TECH 10-26-2020, 06:29 AM
Replies: 8
Views: 3,054
Posted By Mike O'Neill
Main fuel line diameter - 1967 GTO w/AC

The car is a non-HO, 1967 GTO with factory air, made in Baltimore. It has 3/8" main fuel line and 1/4" return line. Probably not original lines; the car was frame-off restored.

I got a new fuel...
Forum: 66-67 GTO Tempest & LeMans TECH 04-23-2020, 10:44 PM
Replies: 17
Views: 1,686
Posted By Mike O'Neill
My 67 GTO with A/C needed a 6 hole grommet. The...

My 67 GTO with A/C needed a 6 hole grommet. The PO had installed mechanical oil pressure and temp gauges, and ran the tubes through the same hole. Made a grommet using TPU filament on a 3D printer....
Forum: Pontiac - Street 10-29-2019, 06:44 AM
Replies: 20
Views: 3,056
Posted By Mike O'Neill
Made this PLA plastic bushing with my 3D...

Made this PLA plastic bushing with my 3D printer. It is very light because the interior is a honeycomb structure with mostly air between. It is pressed onto the stem of the switch. The solenoid...
Forum: Pontiac - Street 10-28-2019, 08:13 PM
Replies: 20
Views: 3,056
Posted By Mike O'Neill
Thanks for the quick reply. I blocked the...

Thanks for the quick reply.
I blocked the accelerator pedal down, and all 4 barrels of the Q-Jet were wide open.
The Ames catalog lists the same switch for 1967 - 1977 and it looks just like...
Forum: Pontiac - Street 10-28-2019, 02:24 PM
Replies: 20
Views: 3,056
Posted By Mike O'Neill
Thought I would resurrect this old thread rather...

Thought I would resurrect this old thread rather than start a new one. Car is a 67 GTO, 400 and TH400. Engine is original, not sure about the trans.
Trying to figure out why I had no downshift, I...
Forum: Pontiac - Street 07-16-2019, 12:12 PM
Replies: 1
Views: 559
Posted By Mike O'Neill
The TH400 in my '67 GTO has a steel drive gear...

The TH400 in my '67 GTO has a steel drive gear with 18 teeth. I know the PO had the transmission rebuilt but don't know if it is the original.
Forum: 66-67 GTO Tempest & LeMans TECH 05-31-2019, 07:31 PM
Replies: 3
Views: 634
Posted By Mike O'Neill
Gear tooth count for 3.36 ratio

I just purchased Yukon Gear part number YG GMBOP-336 gear set from Summit for my 67 GTO. It is supposed to be 3.36 ratio. However, the ring and pinion have 44 and 13 teeth respectively, giving a...
Forum: 61-66 Big Pontiac TECH 05-25-2019, 03:34 PM
Replies: 24
Views: 2,905
Posted By Mike O'Neill
The "not limited slip carrier" part numbers are...

The "not limited slip carrier" part numbers are mostly different in the attachment to post number 4, compared to post number 3. They are all 9784645.
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