Fine Tuning a 360 Magnum with a Brawler "Double Pumper"

do you mean combo as in what cam and stuff I’m running? I do know that peak torque is lower, I don’t think it’s 2500 low though. What if I retard the initial and use vacuum advance instead?

Or do I want more timing initially and limit the mechanical? I’m ideally trying to maximize mpg at cruise, but obviously a properly timed engine is the most efficient it can get.

When I’m getting on it, I shift at or just below 5k. Stock springs, so going over 5k isn’t exactly ideal for them. I can feel at around 4000-4500 the torque starts to drop off. Probably expected given the 650, dual plane, and torque focused cam.

Then you are running close to the power curve of a 340. I’ll look when I get home but I’m pretty sure peak torque was 3800 or a little higher.

It’s known I’m not a fan of using vacuum advance to make an engine idle. That’s a last resort and I can’t see you needing it.

Tuning a distributor is more than just changing springs and limiting advance.

You will probably need to change the shape of the weights to get what you want.

What distributor are you using?