There are specific service numbers that will only accept certain OS's. For example, I've learned that GM used many different E38 ECMs over the years and you cannot interchange all of them. I use the AC Delco Parts Catalog as well as to obtain compatible ECM service numbers for a specific type of vehicle application. (I care nothing about the variable intake, FWIW.) I was leaning in that direction because I was hoping to retain the VVT, which the later 3.5 and 3.9 both have. So I ASSumed that a tune it could be cobbled together to run a manual 3.9. It also shows a 'check/uncheck' option for the variable intake, both of which were only available on the 3.9. This is based upon the premise that the VDF for my engine shows the 'check/uncheck' option for a manual trans. But I was thinking (possibly incorrectly?) they it may have shared a similar VDF with the 3.9, with just a different calibration. Obviously, the 3.5 was not available with an F40, or any manual trans for that matter. Is there any way to tell from the data that I've read from the ECM? Or do I just need to check the ECM? (I'm not sure that I would even know how to tell, by looking at it.) I haven't actually looked at it to verify. And thanks for the clarification.Īccording to Tunercat., my 2010 3.5 is equipped with an E37 ECM. I suppose a 2006 or 2007 LZ9 manual trans tune could be altered to work with a 3.5L. No 3.5L was ever offered with a manual transmission from the factory, thus there is no factory manual transmission programming available for this kind of application. 2007 Pontiac G6 LZ9 F40 based programming will only work on a 2-connector E38 ECM bearing SERV NO 12597121 or 19210378. 2006 Pontiac G6 LZ9 F40 based programming will only work on a 3-connector E67 ECM bearing SERV NO 12603530 or 19210735. Good luck with your project.Īccording to my information, GM only offered the F40 6-speed manual with the 3.9L LZ9 for only 2 model years: 20. It also has a VSS that matches up with the newer PCMs.įor the trouble that would be required to install the F40, I'll be willing to do without the extra gear. Similar enough to a Fiero Getrag that it uses the same brackets and mounts, but it has a sturdier diff and a hydraulic release bearing / integrated slave. Mine will use a Beretta Getrag (aka New Venture T550.) It does not have the two-stage upper intake but, curiously, is still rated at 240 HP.

The E37 is what (apparently) comes with the newer LZ9 engines and, coincidentally, what runs my 2010 LZE (Flex Fuel LZ4 3.5)įWIW, I have discovered that the LGD is a flex fuel version of the LZ9. Has been done before, but with turbo(s) - a search will find it!

I'm just at the research stage at this point, but am looking at transplanting the LZ9/F40 together as a normally aspirated package.

E37 ecm pinout