DesertBob
Full Access Member
- Joined
- Sep 21, 2010
- Posts
- 79
- Reaction score
- 2
- Location
- Goodlettsville, TN
- First Name
- Bob
- Truck Year
- 1985
- Truck Model
- K20
- Engine Size
- 350M/LT9
My 1985 K20 (8600 GVW) has the 350m, AC and a Manual Trans. The AC was just converted to r134a with all new parts. On Sunday it was about 95 degrees and very humid. Driving home on the highway at 65-70 mph the truck hit 210 degrees with the AC on MAX. It has never gotten that hot but then I have not driven it that far, at that speed, with the AC on MAX. When I got off the highway it cooled back down to its normal 195 degrees. I have a new 195 degree thermostat, new coolant, cap, hoses, no vacuum leaks and it is timed at 8* BTDC. The radiator appears to be the original HD. Stock Fan shroud and the fan clutch appears to be working. Gears are 3.4x and I roll on 32" tires. Does all this seem pretty normal behavior for this setup?
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