01-14-2007, 07:02 PM
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CC Member
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Join Date: Oct 2003
Location: lexington, Ky.,
Posts: 12
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Not Ranked
dead miss at 4500
I have a 351w,mild cam, holley 770, msd distr, with vaccum, I have a dead miss at about 4500 rpm.  Engine with 1800 miles, 15* initial timing ,21* mechanical timing. Timing light @ 4500 rpm said 50*  Msd distr has 21* bushing in it. All parts are new. I can disconnect vaccum hose, plug carb no miss what gives? Do I run with no vaccum or do I have a problem with distr? Plan on changing carb to Quick Fuel and adding NOS in future. How much timing does vaccum add to total timing? With vaccum plugged off 36* to 6000 rpm runs good...... |
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