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'72 GMC fuel milage #420676 06/07/2008 3:29 AM
Joined: Feb 2008 Posts: 207 Wenatchee,WA 4 47chevy6400 Wrench Fetcher
47chevy6400 Wrench Fetcher 4 Joined: Feb 2008 Posts: 207 Wenatchee,WA	does anybody have an estimate on what kind of gas mileage my 72 GMC 7500 6X6 wrecker would get pulling a 28 foot semi trailer. it has the 401M 10 speed overdrive transmission and 7.10 axle ratio. also has a edlbrock 600 cfm carb. Last edited by 47chevy6400; 06/07/2008 3:33 AM.

Entire Thread
Subject	Posted By	Posted
'72 GMC fuel milage	47chevy6400	06/07/2008 3:29 AM
Re: '72 GMC fuel milage	C10 - C90 Bill	06/07/2008 4:34 AM
Re: '72 GMC fuel milage	crenwelge	06/07/2008 5:47 AM
Re: '72 GMC fuel milage	47chevy6400	06/07/2008 5:52 AM
Re: '72 GMC fuel milage	hotshoe36	06/08/2008 6:19 PM
Re: '72 GMC fuel milage	Freq2002	06/09/2008 6:19 PM
Re: '72 GMC fuel milage	47chevy6400	06/09/2008 7:52 PM

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