bem14 Posted October 22, 2015 Share Posted October 22, 2015 Can you change the cam in the AI460 to remove the internal egr to increase power Quote Link to comment Share on other sites More sharing options...
Mackpro Posted October 22, 2015 Share Posted October 22, 2015 To do it right would require lots of parts I would think. A combination of ETECH and CCRS parts might work. Quote Link to comment Share on other sites More sharing options...
bbigrig Posted October 22, 2015 Share Posted October 22, 2015 I'm not exactly sure what parts and programming are involved, but I know a guy that did that to a Mack CV Granite tractor. It was an AI460. I'm not sure if he re cammed it to an ASET AC cam or just an E-tech pre EGR cam??? Quote Link to comment Share on other sites More sharing options...
brenner Posted October 22, 2015 Share Posted October 22, 2015 I did it a few years ago. All you need is the cam out of an AC series engine Quote Link to comment Share on other sites More sharing options...
Timmyb Posted October 22, 2015 Share Posted October 22, 2015 So does it make them into a good engine? I've just finished reading about AC and AI engines. Quote Link to comment Share on other sites More sharing options...
brenner Posted October 24, 2015 Share Posted October 24, 2015 The truck burns around 10% less fuel to do the same job as before. Has a little more low end grunt and the EGTs dropped about 200 degrees. Never had it dynoed before but after my AMI 370 made 365hp to the ground which I didn't think was too bad Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted June 6, 2016 Share Posted June 6, 2016 We did it often in our Dealership. You need to find a CCRS engine with the same HP rating. Get a chassis vin from 2003 that was pre-egr (and CCRS) then use that to parts search. Mack stopped selling the full camshaft kit. You can still get a good cam and full kit from PAI, it is equal quality of OEM and costs much less. Also take the high restriction ex manifold off and switch back to a 2003 pre-egr manifold. Take the turbo exhaust shell off and hog it to match the flow outlet. I have a contact for 50HP injectors. You'll gain 50HP with no modification beyond an injector swap out. About $75 per tip. AI can be a great engine but you need to throw a little $$ into it. Most of our guys left the cam alone and did a "breather" mod on it with injectors and manifold switch. If you take away exhaust restriction you can nullify the AI, injectors do the rest. Quote Link to comment Share on other sites More sharing options...
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