Block 3970010...70s block timing ????

[ellisjay2]

I'm about to re pull and drop distributor and set static timing again on 70s block I've put in my truck. I completed this months ago and drove it back and forth few times, it's sat still mostly last few months from being busy. I only have short tube headers as of now. I originally set crank timing between 10 -12° btdc.....started up fine, (used engine) but now you can hear some ping popping on idle, lacks some power driving. I learned these year blocks required 4, 8, and 10° btdc. I don't know if engine has cam or not...sounds like it....person I got it from isn't around anymore. So I'm thinking reset everything and see what difference I get......