Question about 1979 Pontiac Firebird

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Hi,my name is bobby,i have an 71 gto 455 ho motor,i put it into a 79 t/a.i changed it from points dist. to a hei.im havin a real hard time settin the timing,the book says set it at 12 degrees btdc.im gettin all kinds of poppin thru carb and exhaust,tried flippin dist. around 180 deg.thought maybe it was a couple of teeth off,but i get the same thing,what am i doin wrong? please help me,thanx.my e-mail is bfg1972@optonline.net

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Put the timing mark on the balancer at 0 degrees with the piston at top dead center. (piston at the top with both valves closed). Follow the #1 spark plug wire to the dist. cap and set the dist in so the rotor lines up with the the # 1 wire. Make sure the dist. is "seated" all the way. You might have to turn the engine a little to get it to seat fully. You set the timing with a light AFTER you start the engine. If you put the dist. in in the right spot you need only turn it very little either way to start the engine.

Posted on May 30, 2010

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