Hi,I'm louis and am from holland-Europe.
I've got a guestion about timing.
I have a '79 ranchero with a 460 wich is rebuild with 10.5 to 1 pistons and a crane cam:556-563 lift,298-300 adv duration.It also has a MSD pro billet distr,with6AL.
I'm gonna set timing now for some serieus testing after the first 1000 miles.
Factory settings for the MSD dist,is 21 degrees of advance mechanical,and it's got the the heaviest springs so max advance is reached at 4000 rpm.
Someone told me that the BB like the avance sooner at 3000 rpm,so I've hanged to the blue ones so that is totally advanced at 3000 .
What is the experience of you guys?