63 409/425

Don Jacks

Well Seasoned Member
Supporting Member 3
What is your vacuum reading at idle and what is your timing curve like? This thing likely just need fine tuningThe reason that Chevrolet went there was for drivability.s .Factory specs only work on a stock engine and even then they can be made better with tuning.Get a dist.with a vacuum advance on it to start.


Well Known Member
Supporting Member 4


Supporting Member 1
Welcome! I'm in Oregon too. There are 3 of us here racing 409's at Woodburn Dragstrip. The season is about over but would love to have you bring the car to the track to let us give it a looky.