Where should they be measured and what's the highest safe temp?

 

going down the hyway with or with out a load i do about 500 the highest i ever got was like 850 going up a mountain pass here in colorado ive heard the breaking point is about 1300 but id shut my truck off if i ever hit 1000 my pump is turned up i have 4in exhaust with a 6in stack and k&n filter and gauges hope this helps you

 

Yes it does help a lot, Thankyou


Blade

 

do you have gauges yet blade and on my 1st gen i puss 1200 degrees all the time doesnt hurt a thing and spike to 1500 degrees every now and then but normal flatland driving if i keep my foot out of it it stays right around 800 degree's

 

running 70 mine reads bout 700 i was told that 1300 is the highest id wanna go.

 

alot of guys see 1400 plus all the time. they say a cummins is rated to do 1250 for an unlimited amount of time IIRC. if i bury the throttle i can see more than 1400 no problem. but i owouldnt worry too much about that unless you have heavy fueling. i think doing 70 im at about 800 degrees or so. i idle at about 375 alone if that helps

 

Cummins states you can run at 1250* for extended periods of time.

Mine stays on the peg at 1500* during WOT runs and takes a few seconds to come down. Its like holding a torch to a piece of metal, sure the torch is hot as hell but it takes some time for the metal to come up to the same temp. I would not hold anything more then 1250* for more then a few seconds though.

The best place to measure is in the exhaust manifold.

 

damn either you guys are running really hot or my gauge is broken cause i hauled a 69 firebird for about 75 miles last weekend in 95 degrees and i never even hit 800 and its noot like my truck is stock either my pump is turned up, exahust, k&n maybe you guys have more done i guess its good to know what it can handle what do your water temps look like at these temps

 

thats a good question mine has stock injectors and turbo and 300,000 on it m&h 5 fuel pin fuel screw turned in as far it will go afc deleted and spring on top of afc diaphram keeping the fuel pin pushed all the way to the bottom went to oklahoma the begining of last month loaded a fully loaded 1983 chevy 1 ton dually 16 ft flatbed and every little hill or grade had to stay out of it because of high egts and overheatig problems and 13 mpg is what i averaged and to me that sucks mileage not so bad but to much fuel and not enough turbo to help keep my egt,s down so it runs better empty now but anything behind it it sucks

 

my truck hauls like a dream i love it i go 75 up mountains with loads all the time no problem and i live in colorado so were talking real mountains like pikes peak and independence pass and the million dollar highway no problem and i get about 17mpg with a load closer to 20 without im sure less in the mtns tho and i have 290000 miles but ive never hauled a 10k truck but i wouldnt be woried if i had to except about my clutch i need a southbend the oem replacment is a turd