TPI info

[john spears]

 In response to <dzorde> in digest 88 looking for TPI info: The 305
injectors are 19 lb/hr while the 350 injectors are 22 lb/hr. The fuel
pressure regulators vary by year only, not by engine size. In 1985 (the
first year for the TPI engine), the fuel pressure was lower; I beleive about
33 psi with idle vacuum and about 39-40 psi@ 0 vac. It was raised in 1986
and since then it has typically been around 36 psi with idle vacuum and
45psi @ 0 vac. An adjustable fuel pressure regulator is a very handy tuning
tool on these engines as it will not only compensate for 305 injectors on a
350 engine, but also for other engine mods with a given ECM calibration!

                  John Spears
        Speartech Fuel Injection Systems