I have just finished fully breaking in my 4.6 2v and I'm ready to start dialing the motor in. It's currently using a tune the previous owner had on it as I don't have a stock tune (the only change I've made is for the 4.10s and tire). The previous owner did have it stroked however motor was blown so had to bore it and ended up swapping rods as well.
On WOT pulls I'm seeing 0 degrees of timing at 1500 rpm and total timing climbs to 16 at 5500 rpm. How much total timing should I be aiming for (on 87 but plan to use 91 or 93)? I assume closer to the MBT table but I was thinking of increasing the portion of the spark table used in WOT by 2 degrees and seeing what happens.
This is a fully built motor (I will list most of what is done below), however, I have also reduced compression from 9.4:1 to ~8.9 or 9:1 planning for boost in the future. I assume I need to increase the timing to the vacuum side of the graph as well but have no idea what to look for or what that effects.
Motor Details: (Built with intent to turbo but have to custom fab something)
4.6 2v SOHC in/out of a 2010 F150 XL RCSB
Eagle stroker crank (3.75 stroke, 4340 Steel)
Eagle Rods (5.850 H-Beam)
Manely Pistons, 2618 alum (-23CC , 3.582)
Bored 30 over
Comp 262AH cams (278LB springs)
Ported PI heads
9:1 Compression ratio
Stock truck intake
Stock 36LB injectors
Files to show timing if anyone wants it,
1st hard ht ex410.hplCurrent.hpt