The $42 TBI big blocks used a carburetor manifold with a heated spacer. The power level was low on these engines but plenum volume is still large and needs to get enough fuel so it doesn't pop. $42...

I usually end up increasing this value. The amount will depend on injector size, plenum size, fuel pressure, and engine responsiveness. Maybe try 14 ms? Back down if the engine is too sluggish.

They're a much better chamber design than many of the earlier heads. The spark plug is angled toward the exhaust port to reduce intake shrouding, the chamber walls appear to be slightly tapered at...

I can't remember... did you increase the max asynch PW yet? This value limits maximum AE even if the tables command more.

They do. Max timing on the older Bowtie race heads was around 36-38 degrees. Vortec are generally run with 32 degrees.


Aluminum is the key. Aluminum heads transfer heat out of the combustion...

Chamber design has come a long way since the days of the first smallblock. The size, shape, depth of the chamber all play a part in efficiency. Today engineers are looking for faster and more...

The first 25% of throttle angle change makes a greater difference in air density than the next 50%. I tend to ramp MAP AE in faster than TPS on a larger plenum. Then I'll increase the MAP...

I've run into the same problem. Popping is not rich, it's lean. IIRC there is a max PW size that needs to be increased. Then you'll probably end up reducing values in the other two tables.
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