timing/tune up problems

Thansk for the reply 67Dart,

I've used this timing light before on this system and another msd equipped 318 with no issus but now, after the sun roasted it, wen i checked the total timing it was erradic and bouncing around on the marks engine seems to run fine but i want to get this dialed in and running smooth before i start getting miles on it :)

funny thing is when the timing was backed way off, almost knocking and sputtering the mixture screws were super sensitive one half turn and it wanted to kill the motor. So i set the mixture screws at 1 3/4 turns out from seated and then set the timing and thats when the mixture screws started to have no effect.

I don't have a fuel regulator so not sure on psi, i run a holley perf mech fuel pump. The carb is stock out of the box and havent changed jets, rods or springs...yet lol i have the kit to do a few changes but need base line set before i can tweak and set it up to my liking. I'll check the metering rods and make sure they are seated

Thanks again

and any advice on my timing curve? seems like i should be all in at lower rpm's would give me more kick off the line lol not too sure bout that though