Re: 4.3L S10 questions

[Charles Morgan <charlesmorgan@home.com>]

Doug, the only stock multiport fuel injection for the 4.3L engines came on
turbocharged 91 Syclones and Typhoons.  The 92-95 Vortec engines (Vin W)
use "Central Port Injection".  It consists of a single injector with
pressure-operated poppet valves with tubes running to each cylinder.  The
manifold should fit an older 4.3L engine.  In fact, Howell's has a kit to
do just that.  The kit  comes complete with wiring harness and computer--I
doubt you can use the TBI computer as is.  You can get superchargers
designed specifically for the 4.3L, but the only ones I'm aware of are for
TBI engines.

Charlie Morgan

At 04:50 PM 04/10/2000 -0400, Douglas Ratcliffe wrote:
>I am in the market to buy a 88-94 4.3L Blazer, and had some questions.
First, I have access to a multiport 95 Vortec 4.3 manifold complete.  Will
this manifold bolt up to the older 4.3 ok?  I noticed the some of the older
4.3L motors have 9.3:1 compression and the new Vortec motors have 9.1:1
compression.  Will I have to upgrade the TBI computer or can I rig up a
batch-fire system for all 6 injectors?
>
>Second of all, I have access to buy a 3.8L Eaton supercharger off a
Pontiac Bonneville SSEI.  Is it at all possible to use this SC on a 4.3L V6?

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