port injection for 4.3L V6 ?

[Sean R. Funk]

I can't give much help, BUT.. I am very interested in this idea.

I read a few years ago that Jon Moss, the head GM Engineer dude, had a
hi-perf S-10 built, with a 4.5L V6, but with a TPI manifold that had been
cut & re-welded. This makes sense, if the 4.3L heads are similar to the 350
heads. If they are similar, the manifold coul dbe cut and welded in certain
spots and made to work. I've seen people do this with Nissan Z car EFI
intake manifolds (cut them down to 4 cylinders to work on the 4 cylinder L
series engine, in say, a Datsun 510).

Just a thought...


----- Original Message -----
From: "Cosby, Melvin C. (GEL, MSX)" <Melvin.Cosby at Lighting.GE.com>
To: <gmecm at diy-efi.org>
Sent: Thursday, July 12, 2001 8:53 PM
Subject: port injection for 4.3L V6 ?


> Hi everyone,
>
> I have a '90 Chevy S10 with the 4.3L V6 and TBI.
> It is bone stock.  After a stock rebuild, it is running well again.
> I believe I understand the TBI system fairly well and
> would like to upgrade the induction to port injection.
> I am looking at street use only, with the occasional tow.
> Would like to improve low RPM torque if possible.
> Does this type of retrofit even make sense?
> Are there any factory port injected 4.3 (or other) systems
> that could be retrofitted?
> Any other recommendations from the list members?
> I am open to all options at this point.
>
> Thanks in advance,
> Mel
> --------------------------------------------------------------------------
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