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The early e-techs use an offset cam key in low and high HP engines. You would flip the key one way or the other for the desired HP. In your case Inexpect you have this key. The cam shaft has to come out to do this. After that, nozzles, turbo, and data file should get you what you want. If you have a CCRS engine the cam key is left alone

Well nearly jizzed in my pants Bloody cool stuff Have never seen any aluminum chassis on Macks out here Plenty of 671's but never seen one in a Mack Still good enough to put a horn on a jellyfish Really enjoyed this Paul

The truck is an 01 vision, I believe the motor is a 2000.

Well that one was left hand

Did the second R in the VIN designate right hand drive?

Wow, that was fantastic. Thanks for that. Truck is absolutely gorgeous….. bob

The B-63 had a little higher weight rating than a B-61 and the second 3 meant that it had a factory turbocharger and the third number being a 5 as in B-615 meant a V-8 engine

Good find on this bulletin. I pulled up the SB-266-020 bulletin and it says for ETECH and CCRS engines you need the 454GC5234A camshaft installed. If your truck has a CCRS engine it might already have that camshaft installed.

It looks like quick farms latest purchase

OK, I thought I’d add to old people story. I also Rode in that same truck when I was about 12 and they just bought it. My mom was a bus driver at that company and she broke down that one day and I was with her and we both rode in it. Never thought I’d be driving it a few years later. OK now I’m changing the subject.

The first big rig I ever drove had a green oil dripper. I didn’t even have a class 1 license yet winter of 72. The company I was working for had a wrecker. It was a cracker box Jimmy. I only drove it around the yard. I was only 16 talk about a rush ha ha

You could probably convert it backwards to a CCRS engine. Turbo, injectors, EUP’s , engine harness and engine ECM. The ASET AC engine uses a 3 connector ECM and EUP’s and VGT turbo that only fit the ASET AC engines. All other non-vGT ETECH style engines use the 2 connector ECM, getting someone to write a program and flash the AC ECM to delete the VGT might be a issue

Well, it’s definitely got a lot of our attention

This is a Western R-700 the 6-71 is the factory engine this truck belongs to a friend of mine

Need to figure out which pistons you have also.

Where can you get a tune? I want to delete my EGR cooler/valve and VGT turbo from my 2005 427.

What year is it ?

Great work Larry.Iv been following this tread with great interest.... Paul

Yeah those Detroits sound amazing...theres no mistaken one.Id take that R and treat her to new frame rails and away we'd go..something like that when I retire would keep me happy for years... Paul

And yes, I realize they probably didn’t have them in 68

I would just prefer a 285 but those oil Drippers do sound good

I have a 2005 CX 613 with an ASET 427. I’m getting ready to change injectors and while it is torn apart, I would like to remove EGR cooler/valve and VGT turbo and replace with fixed geometry turbo. Has anyone here done this? If so where did you find a tune for it? I have two mid 90s E7 427s and this one doesn’t and never has kept up with them. I think we all know why. I have talked to two of my local Mack dealers and they call the ASETs the forgotten Mack’s. Thank you for your input.

problem with that non turbo 671 is you will always be shifting and not go anywhere. now if it had a 8V71TA or an 8V92TA in it, that would be a different story.