5.2 magnum GT35 to S475

Turbosmblk said
I haven’t, however I’ve taken advise from some guys that tune Holley for a living and they said you can watch your VE numbers on your fuel graph and where it peaks it’s typically max torque then it will start falling off in the upper rpm range. That’s exactly what my fuel graph does between 3700-4200 range. My theory on this was further solidified when a guy on YouTube (restoreitralph) dynod a bone stock magnum with a gt45 and peak torque was at like 3100 just like the factory peak torque numbers. He then put a Hughes air gap on with no other changes and peak torque was now 3800. So my super victor probably pushed things up a couple hundred from that.

What “they” say is correct. Peak torque will always fall right at peak VE. So you pull an additional 3 degrees, in how much of the map? On traction limited stuff, (street tire) I usually keep the timing out of it down low all the way to peak torque and ramp it back when the tire has less chance to break loose. AEM infinity has tables that can be referenced to speed or gear. Boost by gear or boost by speed are two of my favorite tuning tables.