TPI on a 6cyl

[john spears]

It's a better idea to try to match cylinder displacement to the TPI system,
then an overall system horsepower rating. I think with the stock
calibrations, it's more like injector size vs. cylinder displacement as
opposed to hp rating. The number of cylinders the TPI ECM is controlling is
selectable in the PROM, so this should not be a problem. If the engine uses
a variable reluctance 6X distributor, then using an HEI / EST ignition
module, makes the interface between your engine and the TPI ECM pretty
straightforward.  Minor differences in individual cylinder sizing can be
handled with an adjustable fuel pressure regulator.  Depending on your
manifold design, the fueling won't be "perfect", but you can get fairly
close. The TPI manifold is incredibly efficient between 2000 and 3500 rpm,
so this is reflected in the fueling characteristics of the stock calibration.

   Just a few thoughts on the subject.

                John Spears
  Speartech Fuel Injection Systems