327 Timing Question
I have extensivly read all the posts I can find about timing here and decided to give it a shot with my car. Here's my situation that I need help with. I had a buddy with a non adjustable light read off the numbers on the timing tape as I increased the RPM. Granted the car was a little cold the numbers still seemed odd. It's set right now at 12btdc at idle no vacuum. With vacuum it was hovering @ 19-20. I disconnected the vacuum and plugged it. FYI, I have a stock GM HEI, nothing fancy yet. At 1000- 1500 I was already at 30 deg adv. It kept increasing up to 39ish but that was at around 4000. I recently purchased the crane adj vac kit, which I have yet to install. I was going to replace the weight springs but it seems to come in very fast already, too fast. Should I get heavier springs? Will the crane unit help me that much? The car ran well this summer, I just want it to run at it's best for next year.I think it has more to offer. thanks in advance, no pun intended!
1968 Camaro Z28 clone 327 .030 over, Muncie M20, DUI coil, Edelbrock Performer w/1406 , headers, 274 cam
1963 Chevy Biscayne-2 door, 283 2bbl, powerglide, Mallory Digital ignition
1985 Z-28 LG4, Edelbrock hdrs, Lakewood control arms