[Gmecm] re: John's MPFI conversion

[David Allen]

  Thanks for all the info - time to go JY surfing for a late-model 3.4 after the Thanksgiving holiday.  My original modified 2.8 has had a piston slap since day-one (long story as to why).  I've been playing with the VE tables and spark timing now that I have a working wideband datalogger. Even though my calibration is far from perfect it will break the front end loose in first or second gear, with 10 PSI boost.
  I know the "tired" engine will not hold up to much more; but I want to get it up to 15 PSI (the limit of my speed-density EFI system).
 


> Checked with my friend to find out what year that mini-van engine was, all 
> he told me was he sold it.
> 
> As I remember it was late 90's, 3.4L.  It is aluminum headed, does have the 
> roller lifters, and roller trunion rocker arms.  I have a couple pictures 
> that show the lifter valley.
> 
> Asked him again for the year and what it came out of exactly.  I would 
> imagine a safe bet would be any 2000+ GM mini van with a 3.4L would be the 
> same.
> 
> ----- Original Message ----- 
> From: "Denny" <dennysweet at charter.net>
> 
> 
> 
>>I just checked and maybe the 97-99 3.1M motor must be roller cam. However I 
>>think this is a Alum. headed transverse engine. Internal parts may be the 
>>same.
> 
> 
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