Getting hot on the highway with the AC on.
The patient,
74 Duster
Stock 78 318 with a tiny cam and a 670 Holley on a performer 318/360 intake.
Stock ignition, timing is 20 initial and 32 total.
A-500 OD auto and 4.10 gears.
2500rpm @ 70 mph.
Stock 26" rad that got recored to a 3 core about 3000 miles ago. It's nice and clean!
Underhood AC stuff is from an 80s Dodge truck with an aftermarket cross flow condenser about the same size as the rad.
In car AC stuff is Stock 74 Duster.
It holds steady on 180 which is the thermostat rating around town and on the highway with no AC on.
Yesterday it was 90°f outside and I was taking my son and his buddy to football practice about 30 miles away. By the time I got into city traffic (about 20 mile drive with AC on high) I was tickling the low side of 200°f on the gauge.
I got nervous and shut the AC off after a bit of stop and go in the city with the temp going up to just a hair over 200 on the gauge.
My old 360 (R.I.P.) never got over 180 with all else being the same. Should I even worry about it? I am curious about your opinions on what may be causing this.
Cley
The patient,
74 Duster
Stock 78 318 with a tiny cam and a 670 Holley on a performer 318/360 intake.
Stock ignition, timing is 20 initial and 32 total.
A-500 OD auto and 4.10 gears.
2500rpm @ 70 mph.
Stock 26" rad that got recored to a 3 core about 3000 miles ago. It's nice and clean!
Underhood AC stuff is from an 80s Dodge truck with an aftermarket cross flow condenser about the same size as the rad.
In car AC stuff is Stock 74 Duster.
It holds steady on 180 which is the thermostat rating around town and on the highway with no AC on.
Yesterday it was 90°f outside and I was taking my son and his buddy to football practice about 30 miles away. By the time I got into city traffic (about 20 mile drive with AC on high) I was tickling the low side of 200°f on the gauge.
I got nervous and shut the AC off after a bit of stop and go in the city with the temp going up to just a hair over 200 on the gauge.
My old 360 (R.I.P.) never got over 180 with all else being the same. Should I even worry about it? I am curious about your opinions on what may be causing this.
Cley
