6066 (1960-1966) GMC Truck Club - 1966 GMC 910 V8 radiator cap

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IslandGMCguy

October 14th, 2020 04:11 PM

1966 GMC 910 V8 radiator cap

Hi all I have just gotten a 1966 GMC 910 1/2 ton stepside pick up. It’s the Canadian built model with the Chev 283 V8 in it. I am wondering what is the correct radiator cap pressure. Is it 7 or 13 lbs. it has the stock radiator in it. Thanks.

George Bongert

October 15th, 2020 09:40 AM

Re: 1966 GMC 910 V8 radiator cap

Greetings IslandGMCguy!

It most likely is the 13# pressure cap. the 7# caps are for older vehicles, and have pretty much gone the way of the Dinosaurs. Other members, please correct me if I'm wrong on this one.

AZKen

October 16th, 2020 12:32 AM

Re: 1966 GMC 910 V8 radiator cap

I agree with 13lb. Temp gauge is to be monitored.

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