4.3L TBI on 3.8L Engine ?

Joe Boucher
Fri Oct 17 21:10:12 GMT 1997


tyuhas at neurobio.arizona.edu wrote:
> 
> > beside that,i think the 3.8 is a 60 degree v motor while the 4.3
> > is a 90 degree (i would question the compatibility of these
> > distributor)
> 
> I'm pretty sure the GM 3.8 V6 is a 90 degree motor. Their 2.8/3.1/3.4
> family is 60 degree.
> 
> So if both motors are 90 degree, can you use the other's firing
> order if they happen to be different?
> 
> Terrill

The original post was adapting a throttle body (wasn't it?) so firing
the injector's in order is not a problem. So, either the 3.8 retains
it's distributor or with a distributorless system you figure out which
cylinders are opposite of each other and route the wires accordingly.

Joe Boucher
'70 RS/SS Camaro   '81 TBI Suburban



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