1995 4wd auto E/OD GT4 Suburban
° Replaced the original 5.7 motor with a 355 block.
° Crane cam [part # 113931] with intake lift at valve .440" and ad. duration of 266° and exhaust lift at valve .454" and ad. duration of 272°.
° A pair of 23° twisted wedge Trick Flow heads K&N air filter.
° 1 5/8" Flow Tech shorty headers with O2 sensor coupled to 2 1/2" dual exhaust with dual cats, mufflers and no crossover tube.
°_The motor is topped off with some 8mm ignition wires. The rest of the motor and car is bone stock.
After messing with my VE tables for a while and not noticing much improvement, I went back to the factory prom settings and changed the injector flow rate # setting.
This cracks me up
to get rid of a constantley lean run I "decreased" the injector flow rating from 61 to 58.1. And wow!! Theres the power! I had tried to solve the all lean problem by bumping up me VE tables, but, I soon topped out the tables and they looked too flat. All this time the motor has been starving for fuel and now the ecm thinks the injectors are smaller than they are so it leaves them on a little longer
Am I callin this right?
This made the motor run smoother at high loads than it has since the motor swap.
Finally a break through!! Next step is to set min and max BLM's to 128 and take readings for adjustments from the SLM's. Is this the same process as with adjusting your VE tables by thr BLM's?
Slowley but Surely!!!!
Tedd
tedd319@swbell.net
Now to tackle those VE tables again!!!
° Replaced the original 5.7 motor with a 355 block.
° Crane cam [part # 113931] with intake lift at valve .440" and ad. duration of 266° and exhaust lift at valve .454" and ad. duration of 272°.
° A pair of 23° twisted wedge Trick Flow heads K&N air filter.
° 1 5/8" Flow Tech shorty headers with O2 sensor coupled to 2 1/2" dual exhaust with dual cats, mufflers and no crossover tube.
°_The motor is topped off with some 8mm ignition wires. The rest of the motor and car is bone stock.
After messing with my VE tables for a while and not noticing much improvement, I went back to the factory prom settings and changed the injector flow rate # setting.
This cracks me up
to get rid of a constantley lean run I "decreased" the injector flow rating from 61 to 58.1. And wow!! Theres the power! I had tried to solve the all lean problem by bumping up me VE tables, but, I soon topped out the tables and they looked too flat. All this time the motor has been starving for fuel and now the ecm thinks the injectors are smaller than they are so it leaves them on a little longer
Am I callin this right?
This made the motor run smoother at high loads than it has since the motor swap.
Finally a break through!! Next step is to set min and max BLM's to 128 and take readings for adjustments from the SLM's. Is this the same process as with adjusting your VE tables by thr BLM's?
Slowley but Surely!!!!
Tedd
tedd319@swbell.net
Now to tackle those VE tables again!!!
Supreme Member
You've got it nailed sounds like...