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Old 04-19-2021, 09:12 PM
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Default Engine Bay Details

“RADIATOR CAP”
The OEM Big Ear AC radiator cap.

1964 and early 1965 GTO shared the same cap in regard to the style of the 15# and AC font.
The rivet was the recess (hollow) style.


“RADIATOR TOP TANK”
This radiator has never been rebuilt and still shows the White Ink Stamp (156) next to the radiator hose inlet.

The “H” stamp in top tank designates August.

Note, 1966 was the first year for the metal plate with the two letter code which clipped to the edge of tank.


“FAN GUARD”
The first usage of a Fan Guard on a GTO was 1965.

The first 4 months (Aug. ~ Nov.) of production used a metal guard which had the back two rounded corners stamped flat.

It seems this was an issue because of the closeness of the top radiator hose. That rounded corner on the guard was like a knife that could possibly cut into the hose.

A change in the stamping of this guard happened sometime in the Nov. 64 build of 65’s.

That right side rear of guard now had a turn down to alleviate that sharp edge.
This revised guard continued through ‘66 and ‘67 even though the top radiator hose was now on the other side, but with much more clearance and not needing another new stamping.

A couple of spare fan guards show the difference.
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Last edited by 60sStuff; 04-20-2021 at 12:18 AM.
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