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http://m.ebay.com/itm/281727374109?nav=SEARCH Info in link. Has less than 500 miles on it.

First off I'm referring to a Duramax Allison combo. Is there any advantage to running say lower ratio in the rear end and higher in the trans say 4:56 in the rear and 4th gear apposed to 3:42 in the rear and 3rd gear in the trans. The final drive is close between the too with the first option...

I'm selling my 2003 GMC Sierra 3500 Duramax. The odometer reads 248,000 miles, but recent maintenance has been done and many new parts were added. It has the BOSE 6 disc CD changer with gray cloth interior. The exterior is white and free of rust. It does have some small dings. The engine is all...

I just installed a JVC head unit in my 03 Sierra. The rear audio controls don't work along with the rear speakers. I have read that you can't get the rear audio controls to work with an aftermarket stereo. Is this correct? And shouldn't the back speakers still work? Any help would be appreciated.

I'm selling my 2002 GMC Sierra reg cab. Truck pulls hard and smooth. I'm selling as a turn key pulling truck. I don't plan on parting it out. I have tons of time and money in the truck and hate to see it go, but my wife and I have a baby on the way. Engine only has 4 hooks on it since being...

On an all out pulling tune do you guys run any pilot injection? So far this year Ive ran with my pilot tables zeroed out. The truck runs fairly well but always looking to gain feet. This weekend im going to try to run with some pilot injection put back in. Whats your thoughts on this?

Just started tuning on my own for this pulling season. Just got back from a test in tune and truck ran like poo. In the off season I put a different intake on and decided not to use the mafs. In my log file the the truck never commanded more than 10200psi of rail pressure. Question is does the...

Last season I broke more axles than I care to remember. Ive tried after market axles (stock size) and they dont last any longer than stockers. I know every one will tell me to use tony's 38 spline axles. I see the yukon 38 spline axles and spool are the same size as tony's requiring you to bore...