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Old 05-28-2021, 02:37 PM
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Default 1966 Option #614

Things changed in 1966 in regard to the use of the K24/614 PCV.

If a ‘66 GTO was sold “New” in the state of California it would now have the A.I.R (Smog with air pump) on all models EXCEPT “Automatic with Tri-Power”.

1966 Engine codes with A.I.R. code #616 shown below.

WV - 4 Spd. / Tri-Power.
WW - 4 Spd. / 4BBL.
XE - Automatic / 4BBL.

The YR code Automatic / Tri-Power did Not require A.I.R. but instead was the last model to only have the #614 if sold New in California.

The ‘66 YR #614 utilized a molded rubber hose from the center carburetor over to a nipple on the chrome twist “sealed” oil fill cap.
The opposite RH valve cover was now solid (no holes or plugs).

The 1966 GTO with engine code YR had a build of 1759 total.
There is no record showing the total of the California YR with the #614 option, but it should be substantially less.

The ‘66 Car Billing History Card, as well as the Window Sticker shows #614 for this sold New in California YR GTO.

Chart showing Engine/Transmission with codes and total builds for 1966.
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Last edited by 60sStuff; 05-28-2021 at 08:41 PM.
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