If it has an adjustable vacuum advance, it should be able to tolerate more. I've got a 350 that has about 12 degrees base, 36 with mechanical at over 3,000 rpm, and with the vac advance is around 48. Runs fine doesn't ping and is happy so far.
I put the blue springs in the dist. That didn't seem to make much of a noticeable difference, if any.
I went back to post #118 To present , So are you trying to Slow down the Speed of the Advancement? Or ?? If so you can mix match springs ,
The distributor comes with the stiffest springs available and a blue bushing. The MSD spring chart says that using 2 light blue springs with the blue bushing gives you all in centrifugal timing at 2800 RPM.
@SDS Where you just making a statement that you did Not Feel a different's with The 2 light springs & blue bushing ? Or you have a goal that not on Paper. If you want to get more Precise and Tailored, You will have to make some of your Own bushing's . I have made my own optional bushings then MSD offers .(deg's) Some of the Older Mallory where simpler for adjusting to Taylor. More of selection of spring's. Then drill to remove wight or Add weight to weight's ... With a "Very" sensitive scale & Distributor Machine , You could make your own distributor machine with thought with electric motor with variable speed control , Timing Light . When it comes to checking springs A tool to test resistance / tension, I have No clue what that looks like , I guess I am curious on the spring tester Now , I will look around to see how spring's are tested & measured that small
10 zillion opinions so i'll add mine. Had essentially the same thing, used med. springs, about 35 degrees total all in. Be sure you KNOW absolute 0 degrees, look it up on how to find it. Crap performance and starting--junk it.
Originally used a piston stop to find TDC, did it twice. Last week, used a dial indicator to confirm TDC and it was dead nuts on the mark from the piston stop exercise. Is that what you mean by absolute zero degrees? The original MSD springs are like garage door springs, there's no way I was getting any mechanical advance at idle
Flat top piston Ac 45 ts Autolight 25 or 26 Cross to what ever brand I like NGK & a shinny plug Gap 30-40
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