I was having unstable initial timing issues with my MSD Pro-Billet dizzy with the light springs on it. I was running 22* initial and 35* total.
One day I decided to lock out the distributor to see how the motor liked it. I set my timing at 35*. It's been locked out for a year now and the motor loves it. It starts normally with no kickback hot of cold. I would like to have vacuum advance hooked up, but have yet to choose another distributor that has that feature. The motor has never run better, but I bet I can pick up a mile of two per gallon on the highway with the addition of vacuum advance. I get around 10 mpg at 70 mph now.
I am only running 10.2 to 1 compression with aluminum heads, and the motor cranks 200 psi when warm.
