yo!
GL with it!
I agree w/ the guys on this and some info by a good pal. Sixlitre Tune-Up Info "...Yes, stock timing is 10 degrees, I find optimum timing to be almost exactly 13.5 but you can play around until you notice ping and then back off 2 degrees if you want to, and/or tune by vacuum if you care to. Cheapest Autolites money can buy, nuthin' platinum, nuthin' fancy, just set out to .055 gap..."
Distributor, Vacuum, Tuning Tips - mostly for vacuum advance distributors; "...If your vacuum canister isn't adjustable, get one aftermarket, your mileage jump will pay for it. Better have good plug wires and gap plugs to Ford or MSD specs..."
Source: by Sixlitre (Malcolm H, Eddie Bauer) at
http://www.superford.org/registry/vehicles/detail.php?id=4970&s=17585#content