Tuning for Mild Cam, Headers, etc....

[EagleMark]

Did you notice the specs on the cam you have?

HYDRAULIC − Excellent mid-range for TPI
350, injectors, plenum and exhaust system.
2000+ stall converter. Requires custom tuning.
Hyd. Hyd. 2000 to 6000 RPM 12-366-4 268XFI H13 268 280 224 231 .520 .515 113°

Without the higer stall converter, even with a good tune, it's going to be a dead zone off idle... 6000 RPM is going to require a lot more fuel then stock injectors and pressure.

[Fast355]

Did you notice the specs on the cam you have?

HYDRAULIC − Excellent mid-range for TPI
350, injectors, plenum and exhaust system.
2000+ stall converter. Requires custom tuning.
Hyd. Hyd. 2000 to 6000 RPM 12-366-4 268XFI H13 268 280 224 231 .520 .515 113°

Without the higer stall converter, even with a good tune, it's going to be a dead zone off idle... 6000 RPM is going to require a lot more fuel then stock injectors and pressure.

As well as better heads and a single plane intake manifold.......He would be better off to pull that stick out and put something around what I put in my L31 in it.

258/268* @ .006
206/210* @ .050
.458/.458" lift
110* LSA on a 106* ICL

I was cruising about 65-70 mph on the open road today, a/c blasting, listening to some Bon Jovi, rolled on the throttle a little to pass a car while climing a hill, glance down a few seconds later and I was doing 85 mph! Never had even unlocked the TCC or downshifted.

I also running a little late to work the other morning and hit the pedal pretty hard taking off from a redlight on the service road headed into a 2 lane to 1 lane merge.. Gave it probably 1/2 throttle and noticed about 30 mph, I had a floored Avalanche beside me trying to jump in front of me. I had just shifted 1-2, but floored it anyway. 2nd gear from 30 mph, I walked away from a 5.3 Avalanche. All his over cammed, over runnered, high strung, understalled, under geared, small bore 5.3 did is make noise as the old L31 350 pulled away. TORQUE is your friend in a heavy truck.

I was explaining torque to one of the Honda idiots at work and performed a few second gear starts from 0 and never missed a beat there either. With a 2,600 S10 stall its actually a pretty smooth, quick take off too.

Even on my Vortec the throttle plate opening is adjusted for the IAC to only have about 5-7 counts at 600 rpm in Park/Neutral with the a/c off and all the electrical stuff switched off.

[Davis_1377]

Im gonna go with a manual trans later but till then.. Turning the screw really helped, I turned it a few more just to get the IAC closer. I moved the timing from 22 to about 24 but most of the data it stays about the sane. Fuel is alot closer too I think, INT drops way down and comes back up. Im gonna move the fuel tables more later after the rain and cold. Here is the datalog just to see. About where should the IAC be setting at a idle?