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AI 427 with 4500RDS a smart buy?

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Spent a lot of time digging in to old posts and got some great info, but would love some opinions on a possible purchase.

I have a driver that needs an automatic, so time to get another truck. I am looking at a 2006 Granite CV713 with a AI 427 and an Allison 4500RDS Vin 1M2AG11C46M053716

about 270,000 miles on it, 5.32 ratio, 58 rears, 18 front, tandem dump. 12/24 tires.

truck seems to drive great although a little sluggish in the low end. I am going to have the "step 12B" programming checked. 

I am worried about an oil leak. seems to be on both sides of the motor. Drivers side looks to be behind the starter and did not dig deep enough to see exactly where. The passenger side was really wet. Owner said the oil fill cap came off. they replaced it and didn't clean it yet?!?! Anyway, I looked and want to say it is coming from the top of the head. Anything sound alarming?

2nd issue is some smoke coming from the blow by at idle. Not much, but still there. I want to say the color was somewhat white, but want to go look at the truck again to be exactly sure. I called Antrim diesel and they said a little blow by smoke is not much to be worried about?? 

Any thoughts? what is average milage before overhaul. I am kind of willing to do an overhaul, but want to get at least a season or two before doing so

Anything I should look at on my next visit? Kind of need a truck yesterday. looking to get it for $55,000. 

Also, any opinions on the Allison? how many miles average before rebuild. 


Edited by Anthony All Site
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