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Old 07-08-2015, 11:28 AM   #14
TJ's Chevy
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Join Date: Mar 2013
Location: Southern Oregon
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Re: Question for the guys running 3.73's with a 6cyl and manual trans

14 advanced without vacuum is a bit high. 10 is more like it. You may start having detonation problems at 14 advanced if your not running 92 octane. Try it for sure but Beware and listen hard..if it starts pinging stop quickly and back it off a wee bit. 8-10 is the spec, I ran mine at 10 for ease of cold and hot starts. You'll know if its to far advanced as it will "struggle" to start when hot. You don't want to get over the 36 mark or you could start having problems. The little timing tab on the engine will have an A on it(stands for Advanced) with several little marks...you'll see a 0 and each mark from there reads 2, 4, 6, 8 ,10.
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