I just installed an Autometer EGT, Boost and Trans temp gauge on my 2001 F-350 5.7L Dually.

(Well trans temp is not hooked up yet. That is a question for another thread)

My question is what should my egt, boost and Trans read normally. And what are the danger zones. I mostly tow with the truck.

I have a AFT Intake, Custom 4" To 5" Exhaust and running an edge evolution programer.

 

I have a 96 F250 PSD with gauges. I typically run about 600 to 700 EGT while cruising empty at about 2000 RPM I also run about 3 or 4 psi boost at that point. When I drop my fiver on I drop my speed to 65 and run in 3rd most of the time (3.55 rear end not good to tow in OD) that puts me at 2500 RPM. EGT gets up around 900 and boost rises to 5 to 7 psi. Taking a hill is another story if it is a long grade I tend to drop back to 60 RPMs drop to 2300 (a better position on the power curve) EGT will climb to 1100 and boost usually runs around 15 psi of course this varies with the grade.


Safe operating temp depends on the location of your EGT probe, pre or post turbo. Mine is pre turbo. A post turbo position would give cooler readings, up to 300 degrees cooler has been reported. The best place to locate the probe is a point frequently argued here. Any way pre turbo is a more accurate reflection of the actual temp of the gasses leaving the cylinders. when the temp in the cylinders get to 1200 bad things start to happen the biggest potential is melting pistons (around 1350 I think) and burning valves. I try very hard not to allow temps to excede 1150 (just back off a little) and I dont like to run to long over 1000.

Boost is more a function of what all mods you have installed. However it is possible to overboost and that will cause some undesirable things to happen to head gaskets etc.
I know the newer trucks will hit a point (around 30 psi) where the pcm will defuel the engine to prevent damage. There are ways to overcome the overboost problem but they are quite expensive, only the super high performance guys do them.

Tranny temp is straight forward keep it under 200. If it starts to get to hot pull over and let it cool down.

 

5.7??? Got a 350 Chevy n there????? He Ha!

 

Thanks for the info. I am planning a trip towing a suburban and chevy s-10 from indiana to las vegas for the SEMA convention this month. I am a fairly new diesel owner. I want to make sure we make it there and back.

5.7

How about 7.3 sorry that was a total typo.

 

That load should give you no problems