Which radiator cap/T-stat for Mustang Engine

[tim]

I'm running a 92 mustang 5.0 with the stock bronco radiator. The original bronco 302 called for a 13 lbs. radiator cap, the mustang used a 16 lbs. radiator cap. Should I be running the 16 lbs cap? What are you guys running for the t-stat as well? Stock is 195*.

[904Bronco]

Re: Which radiator cap/T-stat for Mustang Engine

I'm running a 92 mustang 5.0 with the stock bronco radiator. The original bronco 302 called for a 13 lbs. radiator cap, the mustang used a 16 lbs. radiator cap. Should I be running the 16 lbs cap? What are you guys running for the t-stat as well? Stock is 195*.

Tim, the higher the pressure cap you run will change (raise) the boiling point of the anti-freeze mix... I am running a 15 lb cap on my 1990 roller motor without issue...

Doug

[crawlin68]

Re: Which radiator cap/T-stat for Mustang Engine

I have a 16 lb. cap (Ron Davis aluminum radiator) and a 180 degree t-stat. I started with a 195 t-stat but it ran too hot, so I switched to the 180.

[tim]

Re: Which radiator cap/T-stat for Mustang Engine

Thanks Guys.

[Efibroncoman]

Re: Which radiator cap/T-stat for Mustang Engine

Running a cooler thermostat could cause your ECM to think the engine is still not warmed up, which will keep it running rich therefore killing your power and fuel economy. As far as the cap, my bronco has the stock cap and 91 EFI on the stock short block. I didn't know that the mustangs had a higher pressure cap. But now I am curious what the difference would be....