does anyone have a part number for an assorted distributor advance spring kit that can be found at oreillys or any of the local parts houses? I had one with several springs in it and cant find it.
Can we use the spring kits for GM HEI distributors or are they different springs? Im asking because i can find those everywhere but only one mopar kit that only has 2 springs in it..

I dont have a part # but you can mix/match any combo of springs that will put you just under the pinging point at WOT up thru the gears on your hottest/driest day AFTER you have first (1) set the initial & (2) the total (initial+mech amt & can not plugged in).

I use the Mr Gasket GM spring kit part # 925B and I weld and shorten up the advance slots on the stock distributor advance plates so I can get between 14 to 18 degrees BTDC idling and no more than 36 degrees total
On the stock Mopar distributor the advance part that the rotor rides on will have a number stamped on the bottom side of that shows how many distributor degrees advance that slot is, if it says 13 then it has 26 crankshaft degrees advance in it at full advance, if it has 12 stamped into it will be 24 crankshaft degrees and so on
You may need to stretch those MR.G springs some depending on your likes and dislikes
IHTHs

So GM spring WILL indeed work? Good because that's about all I can find..lol

Mopar part 2932675 for the lightweight springs. The MR gasket kit 925B shows as a mopar kit not GM
Releases hidden horsepower and boosts throttle response
Optimizes ignition timing
Designed specifically for 6 and 8 cylinder Chryslers
Ensures full mechanical advance between 2000 and 2800 RPM
Comes complete with easy to follow instructions for a hassle free installation

The 925 B only has 2 springs and im wanting more of an assortment to get this thing dialed in..

If you mix and match with the original springs it can usually get you there. The Mopar 2932675 springs are very light weight. I used one of those and the lighter OEM spring to get mine set up years ago.

some more info tho the Crane kit is no longer available I believe.

Summit Racing has their own spring kit for Mopar distributors that works fine, I have used several.

Also, if you want to shorten the advance, I highly recommend the FBO advance limiter plate, works well and way easier than welding.

Ya, I got the FBO plate but I think I need to stiffen up the curve as its advancing a little too quickly causing ping .

Do you know how much compression and how much total timing you have now?
You might want to try a cooler spark plug also to cure the pinging

compression I believe is 9.4:1 and total is 34

part throttle or WOT?

Doesn't ping at part throttle at all, only when stabbing the secondarys open, then it pings. If I EASE into the secondarys, it doesn't ping..but tromp the pedal to the floor quick, she pings!

My 440 was very similar. (slight cam, 9 something compression, Edelbrock 800 AVS). I pinged slightly at WOT in second gear only (4 speed). I played with the jets/rods, and this was as good as I got. So backed timing to 15 at idle and 33 total mechanical, that was just below the threshold that it would ping or not (on a very hot day). Used the Summit springs (they give you three sets to try), which had mechanical all in at about 2150 rpm. Runs great now, lost a little bit of “pull” at WOT versus running at 34 to 36 full mechanical advance but it is a street only car and it really runs across all scenarios (idle, part throttle, WOT) well. Note...I am running the ported vacuum advance, it did help part throttle responsiveness.

Meaning behind the story, as everyone is saying you need to just keep playing with it. Remember there is a lot of tolerance stack-ups on an engine and through the distributor, so each engine is different. Plus today’s gas does mean everything isn’t quite the same as the stories from how to set up years ago.

it depends on what distributor advance mechanism you're dealing with.

Chrysler guts: Check the curve first, you may not need to change the springs. See
https://www.forabodiesonly.com/mopar/threads/360-tune-up.435792/page-2#post-1972523041
but real;ly starts on the page before for the back story.
https://www.forabodiesonly.com/mopar/threads/360-tune-up.435792/#post-1972521984
and tension can be adjusted with the perches.

Mallory YH Guts: See here for a recent thread.
https://board.moparts.org/ubbthreads/ubbthreads.php/topics/2633580/1.html
and do a search for YH advance for more.

440 Timing and factory HiPo curves
https://board.moparts.org/ubbthread...ming-for-dummies-lesson.html#Post2610662