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66 GT 350 engine details

Started by aboss4tg, June 29, 2025, 05:13:12 PM

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aboss4tg

I purchased a 66 GT 350 Hertz a few months back and starting some detail work in the engine bay to freshen up the look. I have a few questions related to the thermostat area and radiator hose.

The elbow hose painted Blue along with the tower clamps.

The heater hose elbow on top of the intake painted Blue.


I removed the original upper and lower radiator hose and noticed the replacement markings are different. The upper reads C5ZE-8286-A and has an AY next to the Fomoco label. The lower hose reads C4ZE-8260-A with the AY next to the Fomoco label.

Are the reproductions just a generic version of the originals?









69 GT 350 Hertz
66 GT 350 H
66 Convertible C code
89 SSP

Bob Gaines

Quote from: aboss4tg on June 29, 2025, 05:13:12 PMI purchased a 66 GT 350 Hertz a few months back and starting some detail work in the engine bay to freshen up the look. I have a few questions related to the thermostat area and radiator hose.

The elbow hose painted Blue along with the tower clamps.

The heater hose elbow on top of the intake painted Blue.


I removed the original upper and lower radiator hose and noticed the replacement markings are different. The upper reads C5ZE-8286-A and has an AY next to the Fomoco label. The lower hose reads C4ZE-8260-A with the AY next to the Fomoco label.

Are the reproductions just a generic version of the originals?










Thermostat housing was unbolted and folded back with bypass hose and clamps while aluminum intake was installed so those items would be painted engine color. The heater hose fitting could be ether way. Sometime they were reused and other times they were not and a new one used. If you plan on it being engine color you better plan on the paint to be rough and chipped as it would be if transferred over. That is if you want it to be historically correct . Many people don't go to that trouble to rough up the paint on things like intake bolts, thermostat housing bolts and heater hose fitting (when painted) .
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

FL SAAC

Thank you for those details

Will be needed when we redo our 66 cult car
When you arise in the morning, think of what a precious privilege it is to be alive to breathe, to think, to enjoy, to love.

Home of the Amazing Hertz 3+1 Musketeers

I have all UNGOLD cars

Not a SHELBY expert

Imitation is the sincerest form of flattery that mediocrity can pay to greatness.
Yup !

aboss4tg

Bob

That is what I thought. I plan on painting the clamps attached to the hose while off the car and install. That would help with the worn areas you referred to on the hose and clamps.

69 GT 350 Hertz
66 GT 350 H
66 Convertible C code
89 SSP

Bob Gaines

Quote from: aboss4tg on June 30, 2025, 06:56:48 AMBob

That is what I thought. I plan on painting the clamps attached to the hose while off the car and install. That would help with the worn areas you referred to on the hose and clamps.


The hose clamps would not be touched during the original intake exchanged process. The bolts were taken out of the thermostat housing and the housing with hoses attached folded back out of the way.  I would paint in place if you can. If reusing a older clamp, a bead blasted clamp etc. You may want to do a preliminary painting before a final painting in place once a assembled.
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

s2ms

Quote from: Bob Gaines on June 30, 2025, 09:57:55 AMThe hose clamps would not be touched during the original intake exchanged process. The bolts were taken out of the thermostat housing and the housing with hoses attached folded back out of the way.  I would paint in place if you can. If reusing a older clamp, a bead blasted clamp etc. You may want to do a preliminary painting before a final painting in place once a assembled.

Bob,

Was the housing with hoses attached folded back out of the way the typical process? Just asking because the French Film shows the housing attached to the intake while being installed, at least during this production time which we think was early March 1966. This shot also shows what appears to be a new (not painted) hose fitting.

Dave
Dave - 6S1757

J_Speegle

Quote from: s2ms on June 30, 2025, 01:17:05 PM
Quote from: Bob Gaines on June 30, 2025, 09:57:55 AMThe hose clamps would not be touched during the original intake exchanged process. The bolts were taken out of the thermostat housing and the housing with hoses attached folded back out of the way.  I would paint in place if you can. If reusing a older clamp, a bead blasted clamp etc. You may want to do a preliminary painting before a final painting in place once a assembled.

Bob,

Was the housing with hoses attached folded back out of the way the typical process? Just asking because the French Film shows the housing attached to the intake while being installed, at least during this production time which we think was early March 1966. This shot also shows what appears to be a new (not painted) hose fitting.

Dave


Dave, could you point out where the "new unpainted hose" is in the picture? I see that the hose is not attached to the intake but can't tell in a black and white picture a hose that is not dark like or close to the engine color - or the other items. Can't see the top of the water pump since the radiator top is in the way. 

As been mentioned before the specific engine in this car (unknown if this was taken on the line or if this was done for the photo shoot) still has the chrome valve covers in place

So hard to see many details in a black and white picture. Even the off white intake gaskets are darker than I would have anticipated but that could be the lighting or exposure of the negative 
Jeff Speegle- Mustang & Shelby detail collector, ConcoursMustang.com mentor :) and Judge

Bob Gaines

#7
Quote from: s2ms on June 30, 2025, 01:17:05 PM
Quote from: Bob Gaines on June 30, 2025, 09:57:55 AMThe hose clamps would not be touched during the original intake exchanged process. The bolts were taken out of the thermostat housing and the housing with hoses attached folded back out of the way.  I would paint in place if you can. If reusing a older clamp, a bead blasted clamp etc. You may want to do a preliminary painting before a final painting in place once a assembled.

Bob,

Was the housing with hoses attached folded back out of the way the typical process? Just asking because the French Film shows the housing attached to the intake while being installed, at least during this production time which we think was early March 1966. This shot also shows what appears to be a new (not painted) hose fitting.

Dave

Dave ,I can understand your question based on the one film. As Jeff S pointed out it is hard to say if the process for the French film was staged in some degree or not. I believe the folding back of the thermostat housing with hose attached was the most typical based on first hand inspection of many 65,66 and 67 GT350's that seemed to be done the same way. It goes without saying that it is was also a efficient way of doing things.  Of course procedures can and could and most likely did change from time to time depending on personnel, direction etc.  As far as the fitting it could be argued that a new fitting was used for production value. They got pretty tore up looking after being wrenched off so I can understand why a new one might be substituted. Also I suspect there was a criteria based on condition and labor for determining if a fitting was to be to reused or not. At least that is the most logical reason I can come up with to explain why fittings being seen both ways in some vintage pictures and on survivor cars. I typically use a new fitting all things being equal instead of a painted one because I think it looks better . That is unless I am working on/restoring  a car where the one that I took off was painted .
Bob Gaines,Shelby Enthusiast, Shelby Collector , Shelby Concours judge SAAC,MCA,Mid America Shelby

silverton_ford


s2ms

Quote from: J_Speegle on June 30, 2025, 02:42:41 PM
Quote from: s2ms on June 30, 2025, 01:17:05 PM
Quote from: Bob Gaines on June 30, 2025, 09:57:55 AMThe hose clamps would not be touched during the original intake exchanged process. The bolts were taken out of the thermostat housing and the housing with hoses attached folded back out of the way.  I would paint in place if you can. If reusing a older clamp, a bead blasted clamp etc. You may want to do a preliminary painting before a final painting in place once a assembled.

Bob,

Was the housing with hoses attached folded back out of the way the typical process? Just asking because the French Film shows the housing attached to the intake while being installed, at least during this production time which we think was early March 1966. This shot also shows what appears to be a new (not painted) hose fitting.

Dave


Dave, could you point out where the "new unpainted hose" is in the picture? I see that the hose is not attached to the intake but can't tell in a black and white picture a hose that is not dark like or close to the engine color - or the other items. Can't see the top of the water pump since the radiator top is in the way. 

As been mentioned before the specific engine in this car (unknown if this was taken on the line or if this was done for the photo shoot) still has the chrome valve covers in place

So hard to see many details in a black and white picture. Even the off white intake gaskets are darker than I would have anticipated but that could be the lighting or exposure of the negative 

Jeff,

Unfortunately none of the stuff I have from the film shows the any of the bypass hose or clamps, only the very top upper rad hose bending down from the radiator and heater hose that was removed from the elbow.
Dave - 6S1757

J_Speegle

Quote from: s2ms on June 30, 2025, 05:41:46 PMJeff,

Unfortunately none of the stuff I have from the film shows the any of the bypass hose or clamps, only the very top upper rad hose bending down from the radiator and heater hose that was removed from the elbow.

Sorry reread and I mistook the "shows what appears to be a new (not painted) hose fitting." as referring to the bypass hose since the earlier train of thought was referencing the thermostat housing and the housing with hoses attached. My mistake.  :(
Jeff Speegle- Mustang & Shelby detail collector, ConcoursMustang.com mentor :) and Judge