need a cam
I was taking timing out to to keep over 6.40 with my home built 496.
I used a timer on my delay box hooked up to a msd retard box and took out 10 degrees after my shift point for 3 seconds and then went back to full timing. It left good and finished good. Almost sounded like a shot of nitrous when it came back to life at the end.
Also had a TOO big duration cam in it to slow it down. 284/292 duration @ .050" lift.
And the 1.75" restrictor plate under the 1050 carbie. At 3200#