I can't comment on fuel mileage because there all dumps. We have trucks with E-F rear ends and trucks with Mack rear ends and there both great and can take a beating.Shop around good though because almost every Mack we have has all kinds of electrical problems including the 3 07's. I know alot of companies that run 400's and 370's but they are almost always automatics so I can't comment. Anything in the 90's should have a Eaton-Fuller tranny in it because Mack didn't start putting Mack trannies in until 2002 or around there. So if I could get my hands on an E7-454 I'd jump at it. They have almost as much power as the 460's and are just as reliable as the 350. As far as power and reliability go, our two 97' CH's with E7-454's are the best we got.
#96 mack truck starter drivers
It's our starter truck and I've seen drivers run it 3 gallons low on oil and not have a lick of water in the tank but the bad boy keeps on truckin. It's a little sluggish from a stop and isn't quite as refined as the others but it'll run with the rest. It's in a '96 CH with about 550,000 miles.
We only have one 350 left and you cannot kill that dang motor. It's about the junkiest motor I've ever seen and is ALWAYS broke down with around 330,000 miles.
We have 3 427's but 2 of them are in brand new automatics and the other is in an '01. We've had 2 460's rebuilt with under 300,000 miles and getting the jakes to stay working is a pain in rear. I run a E7-460 and it is a very powerful motor that can be turned up, but we've also had quite a few problems out of them. At my dump company we run mid-late 90's Ch's as well as some 2000+ CH's.
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