On Wed, 13 Jun 2007 18:10:47 -0700, firstname.lastname@example.org wrote:
As fa ras bolting it in, it is a direct fit. On the electronics as
long as you get a simular year VorTec 350 and change the Eprom in the
computer there should be no issues there either.
Well, ahh, uhh, No he's not...
The 305 is the 5.0L V-8, which is virtually identical in many respects to
the 350 (5.7L) V-8 of that year. The only appreciable difference is the
cylinder dimensions and some programming - hence, Snoman's tip about the
The 6 cylinder is the 4.3L V-6 (263) which is essentially the 350 minus 2
cylinders, and all three of these motors are easily interchangeable in the
full-size truck as all three were offered as options.
Cheers - Jonathan
This is correct because the replaceable Eprom died with TBI so reflash
it but when you do reflash it you are in effect changing the Eprom in
that you are changing its memory rather than replacing the chip
itself. I have never had a VorTec ECM apart (never had a need too) but
I have had TBI ones apart. It would be curiuos to see in the flashable
Eprom in them is socketed or not. Also whilel VIN is coded with
engine type there is likely a way to override this. The Tech 2 is made
to be a no brainer of sorts so that it is hard for tech to screw up
using it. Worst cause, change ECM if not able to flash it. There is
also the option of a after market tune for ECM too. (by this I am
talking a tune that is done with a PC and allows to to set customs
curves for fuel. timing, etc).
I do not believe you have to change anything .
You wrote on Wed, 13 Jun 2007 18:10:47 -0700:
c> I have a 1997 chevy 4x4 with a 305 that is knocking,does anybody know
c> if i can put in a 350.What components will i have to change,or should
c> i put a 305 back in it.Thanks for any info!!
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