Semi-Tractor "Tractor" pulls

Guy I used to work with from out east who helped build a few of those performance engines told me the pre-EGR 14L Series 60 was among the best when it came to putting down big power. 3" input shafts on the transmissions too apparently.

 

You mean like this???

 

Why? Water injection and cold water aftercoolers mean that they dont run extreme EGTs.

 

Older video, I'm sure they squeeze more out of the engines today.
And this is "just" a single turbo pro-stock tractor motor @ 680(?) cubic inch.



More recent:


You can clearly see that part of the water is injected in compressor inlet

 

Copied from their facebook:

The Macksimus Prime team out of Painesville, Ohio, campaigns two 1985 Mack Superliners powered by 998 c.i E9 V8 engines. Each truck produces in excess of 5000 horsepower with a 4 turbocharger setup making approx. 180psi of boost.

 

Anything pre emissions you can get some big time power out of.

Some of the older engines you can turn over way past 2300. If you can get to or above 3000 and keep it there, you can do some pulling. It's just a matter of waiting for something to break or the total traction to fail. Whichever is first.

 

i had some pics of the engine in that truck....ill have to see if i can find them. It is most impressive

 

Actually excess fuel runs cooler, lean is where parts start getting burnt up.

It would be foolish for teams to run these engines with unreliable setups, but I guess for people that don’t push limits it’s hard to understand.