'66 Slant Six Turbo Build

Bill Dedman said
One question: The MSD website says, "The Boost Timing Master allows you to adjust the amount of ignition retard from 1° per pound of boost to 3° per pound via a control knob that you mount on the dashboard. This way you can make adjustments on the fly to prevent detonation as fuel quality or altitude and air quality changes up to a maximum of 15° retard."

If you are running 38 degrees total, and the Boostmaster retards it 15 degrees (which is the most it can retard it, according to their ad,) you end up with 38 minus 15, or 23 degrees of advance.

That's about 5 degrees too much. Is there some other retard feature that I don't know about that you are using? If not, could that detonation you expereienced be due to that 23 degrees of advance?

I obviously don't understand how you're getting 18 degrees with this setup.

Please let me know... I have one of those Boost Timing Masters on my supercharged 360 Magnum engine in my '72 Valiant.

Thanks for any information!!!

Hi, Bill

I'm using the MSD 6530 programmable 6al-2. It allows us to pull up to 25 degrees out.

And I wish I had the chassis setup as good as the engine! It's doesn't hook for anything right now. I can put it into boost on the highway and it can spin the wheels and bounce around - not good.

Anyhow, it's just a stock 8 3/4 clutch type sg with 2.76 gears. Running mancini xhd leafs and kyb shocks. Little baby 225/60-14 bfgs. The tranny is a 904 with a shift kit and a 1.8K stall converter, I might need to bump that to a 2.2K or maybe even higher... I think what I want to do for tires is a spring relocation and run a 16" or 17" with between 275/45 or 275/55 then I want to get some good adjustable drag shocks.