Throttle body Injector interchangeability (GM).

[Rich Vandervoort]

Well I thought the 4.3, 5.0 and 5.7 was about 400 cfm.  I guess I 
should have checked the archive instead of trusting my memory.
<snip>

> 1 Barrel - 300 cfm (4cyl engines)
> 2 Barrel - 400 cfm (2.8L 6cyl engines)
> 2 Barrel - 670 cfm (4.3L, 5.0L, & 5.8L engines)

             Gadzooks, what have you done to need that much air?
             Bruce

             > I am thinking about putting on a throttle body with the 
7.2 liter bore 
             > sizes on a 94 4.3 v6.  The flow rates of the injectors 
are in the
             > archives(I'll probably stick with the 4.3 injector 
size). What other 
             > interchangeability issues exist with the different year 
and model 
             > applications for the TBIs?  Does anyone have a good set 
of equations 
             > for calculating intake runner and plenum volumes?  Has 
anyone had any 
             > experience with the Edlebrock TBI manifolds or the TBI 
to port fuel 
             > injection conversions?

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