[88stang]

I have heard two different things. Stick with a stock thermostat which I beleive is a 195* but some people have told me, considering what has been done to my motor, to run a 165*. Does it really matter?

[83fox]

i think with the efi motors 165* would be too cold, causing the motor to run a little richer but i could be wrong.

180* is a pretty common choice for mustangs

[93lx306dev]

i just put a 160* in my car.. my car has never ran so good.. my car runs at about 172* all the time..

[83fox]

ah, i missed the part where you said 'considering whats been done to my motor'

you might want to run a 160 then

[shurb125]

Originally Posted by 88stang I have heard two different things. Stick with a stock thermostat which I beleive is a 195* but some people have told me, considering what has been done to my motor, to run a 165*. Does it really matter?

What has been done to your motor? The reason I ask is because I'm having cooling problems and just curious as to what works out for you.

[88stang]

Originally Posted by shurb125 What has been done to your motor? The reason I ask is because I'm having cooling problems and just curious as to what works out for you.

Motor: 347, gt40 upper and lower, Msd probillet distributor, msd 6a, msd tfi coil, 70mm eldebrock bbk throttle body, 76mm C & L maf calibrated for 30lb injectors and all the other quick mods such as under drive pulleys, gears, cold air and headers.