AMI 370 power increase

[OldRedMack]

No, we have been so busy I haven't had time to take it to the dyno.  But it's on the to do list. 

[OldRedMack]

[OldRedMack]

Hopefully that is ledgible, all the injector numbers to get you whatever you need.  Thanks to mackpro.  Or mack tech, I can't remember which one I got them from, but they both have been a HUGE help to me and a lot of people on here.

Edited October 6, 2018 by OldRedMack

[Mack Technician]

2 hours ago, OldRedMack said:

I have a ami370, put on an etech exhaust manifold, went to the 427/460 injectors from k&s thanks to mack tech and they were great to deal with, and had the local turbo shop build an s467 with a billet wheel.  The truck makes 44psi of boost and runs like a monster, fun to drive now.

Looks like we have our blueprint and a good testimony!!

Thanks ORMack. 

You willing to mention cost on turbo build?

[03' Big Red]

So I am relatively new to this stuff, am I correct in saying that to go from a 370 to 460 its just a turbo and injector change and no ECM work ?
Not that I want to change anything in my ECM, just curious.
I’ve heard about a 460 XT that’s about 485 HP is that also injector and turbo or does it include ECM ?



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[Mack Technician]

Your out of the XT era.

Use what you got. Every engine generation of Mack has had Cheats until recently. Screws to turn, puff limiters to cripple, warranty seals to break, injectors to swap, manifolds to switch, turbos to manipulate, special austrailian smoke files, XT files, tuners, deletes, etc, etc, etc. You now know what yours is, on a platter, from OR Mack who just did it. Good Luck! 

Edited October 7, 2018 by Mack Technician

[OldRedMack]

$1500.00. On the turbo.

[Mack Technician]

On 10/6/2018 at 9:47 PM, OldRedMack said:

$1500.00. On the turbo.

Pretty fair when you consider the price of a stock, sub-par, 300 series ( over $2K). 

Edited October 27, 2019 by Mack Technician

[Mack Technician]

Supplement.

[OldRedMack]

Any updates?  Did you go thru with it big red?

[03' Big Red]

I have not as of yet, just hit the 90,000 ish mark on a in frame, the engine really loosened up and runs excellent, I can shift at 1300 rpm now and it has the power to keep pulling, until recently I had to rev to 1800 or so. This is a tri axle, the gross weight here in PA is 73280 lbs

[Mack Technician]

Mackvette1 is going through his right now and scored a new 400 series turbo and a manifold for $600 total, that's a good deal. Maybe it was right place, right time or he has a source?

[03' Big Red]

Did I say 1300 rpm ? My bad, it’s more like 1500 rpm, I am still considering the manifold and turbo ..

[OldRedMack]

Its definitely worth doing.   Also, if it doesn't have a boost gauge and pyro, put them on it.  Even if you dont do any upgrades,  the kits are cheap enough and easy enough to install. I bought both of the from summit.

Edited December 19, 2018 by OldRedMack

[woody225]

On 10/5/2018 at 7:50 AM, Mack Technician said:

If you add 100 your a 370, drop it to 460 and you need;

631GC5172M3 turbo (which I have for sale for 10% of new price, if you are staying stock)

736GB419M3 injectors (if your staying stock)

Your on your own for ECM software. Site is still mourning Mpro's departure.

Your truck will be set up as AMI not AI, but the peaks may overlap well enough since AI-460 has a long, flat, top.

Pay attention to torque rating of clutch, trans, driveline, etc.

Have you found anybody that take care of the ECM software, or still no luck?