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38 is too much for my engine also.
Mine is happiest at 34 total mech and I had to adjust down the vac adv a bit to get away from pinging.
16 initial adding 18 mech, low comp engine, iron heads.
I found a new set of the Mr gasket springs in the garage, so will try to change out the heavy spring...
Following as I have the same jumpy timing at higher rpms.
Im thinking about the shaft on the Dist not fitting the oil pump drive? I can grab the rotor and rotate it back and forth quit a lot.
(Timing gear/chain is new).
I have the heavy spring on and my max timing is far beoynd 3000 rpm, so...
Sorry, not much help from me here as I made a custom bracket and wire to the 727.
Though as earlier stated, some edelbrock mopar bracket and pin should fix it. :thumbsup:
So QC fails again on a AVS2 this time.
It seems that whatever you buy today needs a good check before starting it up.
A while ago I got a brand new in box alu 750 Holley that had a lot of shavings in the channels...
What are these "plastic gauges" to check advance?
...sounds like something I need. :)
I have an adjustable vacuum control and had to adjust down a bit to not get pinging at wot. (At 16 initial, add 18. Low comp engine.)
A 800 Thermoquad (Super quad) would be awesome as your intake can take a spreadbore carb.
Though, lots of time to invest there in finding parts/ a TQ in good condition etc etc
The Holley 680 VS would work good and give you even power.
The AVS2 650 would work really good, give you a snappy...
I am also running a FBO plate.
I did put 18 as initial adding 16 on the plate...though the engine did not like that and became "nervous", hard to describe but you could really feel it when driving away.
Lowering initial to 16 and adding 18 on the plate got it smooth and happy, giving it a strong...
I was curious so I checked the gaps on the old original one I just got.
Yep, the gaps are very constant and only one feeler gauge blade did fit (in this case 010).
A big difference from my newly made dist.
Old stuff wins again.
Kern, does the distance differ much when checking with the feeler gauges?
On my newly produced Mopar perf dist the distance varied a lot.
I have not checked my old original one yet...
Great info in this thread.
I just got this one that I am going to restore, taken off an old running 440.
I also run a limiter plate in my car now, 16 initial, adding 18. Great little metal plate.