Looking for a good timing setup
There's been tons written on this subject and posted on this board
http://www.forabodiesonly.com/mopar/showthread.php?t=158842
Look for other posts, esp by people like crackedback
First, you should know what you "have."
Use a piston stop to determine if the timing marks are actually accurate
Research your cam and find out where (timing, "degrees") that it should be installed for best performance
Then play with timing AND TIMING CURVE
A "stock" distributor, especially ANY distributor made after 69-70 is going to have a "smog" curve from the factory, not the best.
You need to recurve it, (limit the mechanical advance) and use lighter advance springs
This is a VERY good article
http://www.moparmusclemagazine.com/techarticles/engine/mopp_0301_mopar_electronic_ignition_system/
FBO sells "limiter plates" that sandwich into the mechanical advance so you don't have to do any welding on the advance slots
Scroll down this page and look for the
J685K Limiter Kit
http://www.4secondsflat.com/Ignition.html
Your last options are either to have your factory one recurved by someone who "does this".........
Or buy a complete aftermarket distributor which you can ADJUST the timing curve in, such as Accel, Mallory, MSD, etc