DIY_EFI Digest V1 #87

[talltom]

>------------------------------
>
>From: Charles Morgan <cmorgan at efn.org>
>Date: Mon, 25 Mar 1996 18:51:05 -0800 (PST)
>Subject: Re: 4.3 multi-port fuel injection system
>
>On 3/25/96 -0600, Ryan Harrell wrote:
>>I was wondering if anybody knows if Chevrolet (or any aftermarket vendor) has 
>>a multi-port fuel injection system available for a 4.3L V6.  I believe there 
>>is one, but I have no information on one.  If so, does anybody know of a 
>>manufacturer who makes computers for these engines (Everybody seems to be 
>>obsessed with V8 engines)...
>
>The turbocharged 4.3L V6 that Chevy used in the Typhoon/Cyclone models is
>true multi-port, but getting one of these would be darn near impossible
>(I've tried).  The 4.3L Vortec V6 introduced by Chevy in 1992 is called
>"Central Multi-Port Fuel Injection" although it uses a single injector with
>poppet valves at each intake port.  It's performance, however, is very
>adequate.  Turbo City (714-997-1196) sells a multi-port kit for non-Vortec
>4.3L V6s; I beleive they use a GM computer.
>
>Charlie Morgan 
>
>------------------------------
>
>From: Jim Steck <72614.557 at compuserve.com>
>Date: 25 Mar 96 23:27:29 EST
>Subject: 4.3 multi-port fuel injection
>
>>I was wondering if anybody knows if Chevrolet (or any aftermarket vendor) 
>>has a multi-port fuel injection system available for a 4.3L V6. 
>
>Haltech's competition is :
>
>Electromotive
>14004-J Willard Drive
>Chantilly, VA  22024
>
>1-800-843-3889
>
>They also use GM sensors.  I've built three engines with their TEC systems
. . .
>including two 300 horsepower 2.0 liter turbocharged Alfa Romeos.  Their system
>has been very reliable (no failures in 100,000 cumulative miles) and is very
>flexible.  Prices are similar to Haltech.
>
>- -Jim Steck
>AutoComponenti

And for those "obsessed" with v8's I believe the 96 Chev 454 also uses whatever
G.M. calls it's version of Bosch's constant injection system. Haven't seen
one, but have read that it operates on the same barn door blowing in the breeze
configuration and poppet valves in the ports.