3 Attachment(s)
Injection Timing Assistance Requested
Tried to dial in my setup before taking it in for a dyno tune. I'm not sure how much effort was put into "fine tuning" my combination. Horsepower and torque numbers were ok, but lower than I hoped. Arrived at the strip (post dyno tune) with 12 gallons of 93 octane and one can of Torco in the tank. I added 7 degrees of timing at all points below and to right of 3000 rpms and .64 grams spark airmass, lowered PE enable, and raised shift points by 200 rpm/2 mph during the session. After 9 passes, I was able to drop elapsed times by 8 tenths while picking up 7 mph.
Combo:
408 CID
PRC 260cc heads
Holley Hi Ram
NW 102mm Throttle body
57 lb FAST injectors
9.5 to 1 compression (no turbo yet)
4L85E Supermatic
31x18x15s and 4.11 gears
Cam is a TSP version of the BTR Racing Stage IV turbo
Duration @ .050 = 234/239 ( I can't seem to find values at .006)
Lift with 1.7 Rockers = .615/.629
115 lobe separation
110 Intake centerline
Been reading up on injector timing, but I'm not there yet. Can someone give me direction? Seems like truck should be faster. Tune attached. Log from last pass attached. ERMs template attached too.
Open to all other advice/suggestions too.