Kipper5136 Posted June 20, 2016 Share Posted June 20, 2016 Can I get 480 HP out of my AC-460 iv read they can be turned up Quote Link to comment https://www.bigmacktrucks.com/topic/45742-ac-460/ Share on other sites More sharing options...
HeavyGunner Posted June 20, 2016 Share Posted June 20, 2016 No idea but why go through the trouble for 20hp? 1 Quote The problems we face today exist because the people who work for a living are outnumbered by the people who vote for a living.The government can only "give" someone what they first take from another. Link to comment https://www.bigmacktrucks.com/topic/45742-ac-460/#findComment-337245 Share on other sites More sharing options...
Mackpro Posted June 21, 2016 Share Posted June 21, 2016 If you have the AC 460-E it can be turned to a 460-P which is 480 to 487 HP ( depending where you read) . The dealer can do this. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45742-ac-460/#findComment-337306 Share on other sites More sharing options...
Kipper5136 Posted June 23, 2016 Author Share Posted June 23, 2016 Thank you Quote Link to comment https://www.bigmacktrucks.com/topic/45742-ac-460/#findComment-337405 Share on other sites More sharing options...
DSCannon Posted July 31, 2016 Share Posted July 31, 2016 You can also load in a 427hp file or 355/380 hp file with the 460E/P injectors and turbo to get over 500 hp. These files have more injector opening time to work with 750 hf and 650 hf nozzles on the smaller engines. When combined with 900 hf nozzles more power occurs. Also you may want to remove the boost relief valve at the end of the intake manifold. This will increase boost and drive less EGR. Turbo speed limiting and Turbo over boost are codes you'll have to watch for. We had one in our dealership making 50 psi boost and well over 500 hp. Quote Link to comment https://www.bigmacktrucks.com/topic/45742-ac-460/#findComment-340979 Share on other sites More sharing options...
Jamkar Posted August 9, 2016 Share Posted August 9, 2016 Does this 'upgrade' apply to etech and CCRS engines? Quote Link to comment https://www.bigmacktrucks.com/topic/45742-ac-460/#findComment-341791 Share on other sites More sharing options...
Mackpro Posted August 9, 2016 Share Posted August 9, 2016 The ETECH engines had the 490XT program The CCRS had the P ( 487 hp) and the E motor as well. I didnt remember seeing the P version of the CCRS so I pulled out my 2002 Mack Tune Up book and it did list them both. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45742-ac-460/#findComment-341798 Share on other sites More sharing options...
DSCannon Posted August 16, 2016 Share Posted August 16, 2016 The CCRS engine will also respond well to an ECU "upgrade". The 460P/E had 850 hf injectors and the 427 had 700 hf injectors. Mixing a 427 file with 460P/E injectors should get you over 500 hp mark. Based on injection timings it will probably increase peak torque more than rated power. The Etech Step 7 probably won't make much difference as the 460 P/E and 427 used the same 850 hf nozzle. The 400 hp used the 700 hf nozzle. Mixing a 400 hp file with 850 hf injectors will get you roughly 485 hp, same as advertised 487 hp on P version. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45742-ac-460/#findComment-342649 Share on other sites More sharing options...
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