[Diy_efi] Help, putting a 4.3 TBI on a buick 3.8L V6

[Jim Kyser]

Chuck,

I haven't done this yet, but I will be doing it. The parts I've 
collected so far are:

1. TBI unit from a 4.3
2. '747 computer from a 4.3
4. adapter plate to adapt TBI unit to Holey 4 barrel manifold
5. Holley Street Dominator manifold for Buick V6 (you could also use the 
Edelbrock Performer manifold but I chose the Holley because it sit a 
little lower and supports an EGR valve)
5. wiring harness for TBI (you can adapt one from an Astro van or 
S10/S15 truck or buy one from one of the aftermarket vendors. I chose to 
buy one from Painless Wiring)
6. sensors for the TBI system that aren't attached to the TBI unit (the 
list here depends on how complete a system you're installing but 
includes knock sensor, o2 sensor, vss, coolant sensor)

I will be installing this on a fresh 4.1 liter that's going in my 1946 
Willys CJ-2A with a 4 speed and 4.27 gears. I plan to try using one of 
the 4.3 liter, manual transmission ROM images as is, first. If that 
doesn't perform well, I'll tweak it from there. If you get any more info 
you can share, please do.

Jim

Charles Woock wrote:

> I am going to put a 4.3 TBI on a 4.1L Buick V6 (like the 3.8L only 
> bigger bore).  Has anyone done this.  If yes, please give me all the 
> info you got...like which vehicle is the best donor for the parts, 
> installation quirks, and programing data (tables) to start with.
>  
> I build and race Pro Stadium tough trucks so I'm decent at most things.  
> Unfortunately, I'm old-school and fuel injection is not in my toolbox 
> (brain).  I have been doing lots of research on the net...  Now I need 
> some specific information.
>  
> Thanks,
> Chuck

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