2.8v6 tpi and a 730

[Ernst denBroeder]

At 04:07 PM 7/18/00 -0800, you wrote:
>Which V6 MPFI intakes did you get?  I assume you got the Gen I because

Yup... Gen I intakes.

>the Gen II's won't mate to the iron heads.  (The aluminum Gen II heads
>have a different shape.)  Your TBI engine has the iron heads.  There are
>actually also two versions of the iron heads - small valve and big

I have the big valve heads.  I had to remove the heads when I installed the 
headers (broken bolts).  So..... I couldn't very well re-install them 
without pocket porting them first.  That would be a waste of power!  :)

>Gen I MPFIs use a dizzy.  You might be better off converting to a
>complete Gen I (C3 ECM) system rather than trying to rig a '730.  For
>Gen I, your ECM choices are the 1226870 ('85) and 1227302 ('86-'89) if
>you want to use MAF.  If you want MAP, use a 1226869 or 1227170.  For
>the former pair, you could start with a stock Camaro calibration, the
>latter, a Fiero cal.  TK's GMEPro supports the latter.

Thanks for the info tip on the Fiero/GMEPro pairing.  I want to use 
MAP.  Other then the added complexity, is there any other reason not to 
consider the 730?  I picked the 730 because I wanted to learn it... I'm not 
married to it.

>If you examine GM's 2.8 MPFI engine lineup in the late '80's, you'll
>notice that the higher output applications retained the iron head Gen I
>design.  This is despite the theoretically better canted valves of the
>aluminum Gen II heads.

I think even the 3.4 RWD crate motor retains the Gen I head...

Ernst




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