[Fot] Overdrive issue

[Larry Young]

While we're talking about overdrives, I'd like to hear what mods some of 
you have done for racing with an overdrive.  The main factors I've seen are:
1. Use an overdrive with the large accumulator
2. Shim the accumulator spring for higher pressure (some say 600 to 650 psi)
3. Drill out the pressure relief hole in the operating valve for quicker 
shifts out of overdrive
So, let's hear it from those with experience - Kas, Glen?
Larry Young