I'd just like to know what is an acceptable RPM for highway crusin. I have a tendency to be a little heavy on the skinny pedal and damn its not my fault the cruise will set at 85 MPH. Is runnin down the highway at 2600-2800 RPM a bad thing for the engine???

 

With my 4.10 axle gearing I can "cruise" around 3000rpms doing 85mph. I have seen 3200 rpm and a pegged speedometer a few times . I think it likes it, but I just dont like the 13-14 mpg when I go that fast.

 

Nice to know someone else has a heavy foot lol I have worked on and owned some constrution equipment in the past i.e 425 cats some perkins diesels but man i tell ya when i look around under the hood the first thing i think of is some crazy import fuelie gas enighe with all the sensors and stuffs lol I'm learnin the ropes here with the PSD its a totally new beast to me.

 

The 7.3 psd is different, but nothing compared to the newer diesels out.

Keep reading and asking questions and you will learn all you need to know

 

i had my 97 up to 3200-3300 rpms, like foreman i didnt like the fuel mileage but no ill effects on engine.

96 is a whole nother story, lets just say its smooth at 4200rpms

 

Ya but Luke your going a heck of a lot faster than me . What axle gearing does your have?

oh I thought you were talking about your 96

 

I usualy try to do 60 - which is a hair under 2K =) 65 is right at 2K I believe with the c5 4.10 axle. When I get my 38s I might be willing to do 65 =)

 

I take it you had your computer reprogramed to move the rev limiter up ??? i am curious as to just how much you can do to these engines with them stayin reliable. i see people doing these mods and i wonder at what milage they are doing them?? i know sorry a bit off topic

 

97 has 410s and 96 has 355's. I have not ran it up to 4200 in OD with the 3.55's, i think that would be close to 160 mph lol. I did however manage to lock od out while drag racing and bounced it off the 4200 rev in drive until i figured out to push od lock button in. highest ive ever had the 96 in od was about 3600 and beleive me that was plenty fast.

 

yes my rev is bumped up in my 96. I would not run a stock engine up that high, it will prob not last. The engine in the 96 is no where near stock so running that high occasionally wont hurt it.

 

I watched that video! lol

3600rpms in od. WOW

 

Well Luke is the man to ask about this. He has a couple mods done to his 96 how many miles on the new engine?

 

i run mine 2400 at a highway cruise at 70 all day long. driving around i take my shifts (manual) well above 3k religiously.

 

"above 3k religiously."

same here, I cannot belive I still get 14-15mpg in town. lol

 

i hear you guys there for the size and weight i am amazed what they get for milage, my neighbor has a V10 Dodge and i think he just sold his last kid for gas money, and hell i can still out pull him