Tain't often that I get stumped, but there's the situation.
New SBF. It runs swell, makes a boat load of power for a 331. All the vital signs look fine as frog hair........until I checked the timing with 2 different timing lights. My pro buddy checked it with his light also.
The reading? 40ish... deg advance at idle (bout 1200 rpms).....it's beyond the marks on the balancer and shouldn't even run.....but it doesn't react as if the advance is way off.
All the usual suspects have been checked. The 0 mark & pointer are right on with TDC on #1....triple checked.
As my buddy says"this is impossible". Obviously, those timing lights are wrong.......but how/why?
There are some wild cards in the works. MSD digital 6AL, pertronixs dizzy, MSD tach adapter and a bunch of electrical stuff that didn't come with the car (65 Mustang) that *shouldn't* effect the ignition.
My next step is to replace the distributor with a similar unit....... poke & hope.
I don't mind earball tuning a bit......but I like to know where I am from the get go t.
Sure, I shoulda stuck with something simple....like Porsches.
The pic don't help none, but I needed an excuse to get it in here.
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