340 build No POWER need help w tune

Originally Posted by crackedback
Stock distributor? Really?

If you didn't have at least 18* on it, you aren't even close. That thing won't idle worth a darn with the total timing method and a stock distributor. The big rpm drop is the first clue, idle mix screws not killing it is second... it's not on the idle circuit.

I'll bet it will want 22-24 initial and 12-14 mechanical to hit your number. Go out and turn the distributor CCW when running, if it picks up rpm, it wants the timing. That should idle in the 850-900 range and not drop more than about 100 rpm in gear.
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Before you do anything, put the light on it and turn the distributor so you have 20-24* at idle. You'll likely have to close up the throttle plates as you add more timing because the idle speed will pick up. As you turn the idle speed back down verify that it still has the 20-24 timing you set it to start with. If it drops out, add it back in. At some point the mix screws should start to have an effect and engine will shut off when screwed all the way in..

On the MSD, put the 18* black bushing on it and one of the light silver and light blue springs. Toss the garage door springs it comes with in the bag...

If you want a limiter bushing that allows for more initial timing, I have them in both 10 and 14 degree versions.

The stock electronic distributors can work. They just aren't set up for anything with a decent sized cam.

I've fixed tons of cars that run just like your right now. Takes time to get your ignition ti