1975 L-48, 4 speed with A/C Heater hoses?

[Lynn S.]

The 1975 Corvette assembly manual (pg 129) shows the routing of the heater hoses. It shows the hoses entering the heater box at the top which is representative of a non-air car. It also shows the hot water cut-off valve in the middle of the hoses. It is my understanding and supported by the NCRS technical and judging guide (pg 73) "Most A/C vehicles have a hot water shut-off valve..."
I have an L-48 motor car with A/C. Which variation A/C or non-A/C needs to have the valve in place? Thanks for your replies.

[Edward J.]

[Tom R.]

Re: 1975 L-48, 4 speed with A/C Heater hoses?

The 1975 Corvette assembly manual (pg 129) shows the routing of the heater hoses. It shows the hoses entering the heater box at the top which is representative of a non-air car. It also shows the hot water cut-off valve in the middle of the hoses. It is my understanding and supported by the NCRS technical and judging guide (pg 73) "Most A/C vehicles have a hot water shut-off valve..."
I have an L-48 motor car with A/C. Which variation A/C or non-A/C needs to have the valve in place? Thanks for your replies.

Lynn
After considerable study of this topic and viewing original 75 cars with and without A/C, the view that will come out in the revised 3rd edition of the 75-77 TIMJG is that the hot water shut-off valve was equipped on non A/C equipped Corvettes. In 1976, both options were equipped with hot water shut-off valve.

[Lynn S.]

Re: 1975 L-48, 4 speed with A/C Heater hoses?

Thank you very much Tom and Edward. Now we can move forward. Have a great holiday season.

[Mark E.]

Re: 1975 L-48, 4 speed with A/C Heater hoses?

Lynn
After considerable study of this topic and viewing original 75 cars with and without A/C, the view that will come out in the revised 3rd edition of the 75-77 TIMJG is that the hot water shut-off valve was equipped on non A/C equipped Corvettes. In 1976, both options were equipped with hot water shut-off valve.

I'm not clear. Are you saying for 1975, only non-AC cars had a shut-off valve; and for 1976, AC and non-AC cars had a shut-off valves?

[Lynn S.]

[Mark E.]

Re: 1975 L-48, 4 speed with A/C Heater hoses?

That’s what Tom Russo said in his reply.

Not specifically. That's why I'm asking.

[Tom R.]

Re: 1975 L-48, 4 speed with A/C Heater hoses?

Not specifically. That's why I'm asking.

What's missing?