Does anyone know what the difference between mechanical advance weights with different numbers on them.
I have three stock distributors and one has '254' stamped on the weights and the other two have '106' stamped on them. The 254 weights came out of junkyard 292 (year unknown as it was originally a V8 truck) and the other two came out of junkyard 76 Nova's with 250s.
The 254 weights appear to be heavier than the 106 weights and they they are not shaped the same.
