4.3L Throttle body and ECMs

[Bruce Plecan]

It'd be easier to hunt up on at a junkyard.
Probably find one in the cores pile, cheap ($35-50).
Off the top of my head, they are close to
4.3- 1.6"
5.7- 1.8"
7.4- 2.0"
Bruce


> Anyone know the diameter of the bores on a stock 4.3L V6 throttle body and
> what size stock injectors are used? Also, can an ECM from a 4.3L vehicle
be
> used on a V8? I checked Ludis site and it only lists 4.3 V6s and 4 cyls.
for
> the ECM in question. Does that mean there are no calibrations for a V8 for
> this particular ECM? I would think that the calibration would have to be
> factory V8 in order to account for the V8 reference pulses from the
> distributor.
>
> Anyone ever tried to bore out a 4.3 throttle body to make it into a 5.7
TB?
> Looks like it would work to me.
>
> Thanks, JW
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