The LS1 411 PCM thread

[EagleMark]

Thought I would start a thread with some questions on what it would take to use the 411 PCM from the LS Chevy engine series on an old engine?

What intrigued me was 2 O2 sensors for right and left bank. Seems a big improvement there.

Pretty sure I'll need a crank sensor. Timing from crank has got to be more accurate then at the end of a timing chain and cam.

Although I'm collecting coil on plug ignitions cause guys that can afford LS1 Camaros and such sell them for $20. each and replace them with MSD stuff at $700.ish... but could I use a distributor? If not I'm thinking it would be easy enough to cut off a distributor and bolt it in the hole so the oil pump still drives! (Good thinking ey!) Or if the LS needs 2 sensors one could be crank and I could make the distributor one as well?

[Six_Shooter]

Start here:

http://www.thirdgen.org/techboard/diy-p ... gen-i.html (http://www.thirdgen.org/techboard/diy-prom/353405-sequential-injection-gen-i.html)

http://www.thirdgen.org/techboard/dfi-e ... m-run.html (http://www.thirdgen.org/techboard/dfi-ecm/493963-can-411-pcm-run.html)

http://www.thirdgen.org/techboard/dfi-e ... m-tpi.html (http://www.thirdgen.org/techboard/dfi-ecm/425473-0411-ls1-pcm-tpi.html)

http://www.eficonnection.com/eficonnection/default.aspx

[EagleMark]

Found this link in the one you posted from TGO. Very interesting...
http://www.pacificp.com/forum/viewtopic ... c&start=80 (http://www.pacificp.com/forum/viewtopic.php?t=317&postdays=0&postorder=asc&start=80)

Does the Ls1 411 need a crank and a cam sensor and how do they operate? Or what do they do? I'm not trying to do this on a Chevy but the IH engine we are rebuilding for the kids tow rig. It may become more $$ then I first thought which would put us back to batch fire.


Maybe Dave can answer? Is this the sensor your trying to replace with your CAD and waterjet cut gear?
http://www.thirdgen.org/techboard/attachments/diy-prom/121193d1151710778-sequential-injection-gen-i-l31timcvr.jpg

[dave w]

Found this link in the one you posted from TGO. Very interesting...
http://www.pacificp.com/forum/viewtopic ... c&start=80 (http://www.pacificp.com/forum/viewtopic.php?t=317&postdays=0&postorder=asc&start=80)" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

Does the Ls1 411 need a crank and a cam sensor and how do they operate? Or what do they do? I'm not trying to do this on a Chevy but the IH engine we are rebuilding for the kids tow rig. It may become more $$ then I first thought which would put us back to batch fire.


Maybe Dave can answer? Is this the sensor your trying to replace with your CAD and waterjet cut gear?
http://www.thirdgen.org/techboard/attachments/diy-prom/121193d1151710778-sequential-injection-gen-i-l31timcvr.jpg

Yes, this is the trigger wheel I am replacing. I'm using the same Vortec sensor. The Vortec trigger wheel is low resolution 4 teeth. The LS per coil trigger wheel is 24 teeth.

[EagleMark]

Glad to see your getting closer and have newer pics! :wtg:

So I am guessing the four tooth works a distributor and a 24 tooth works coil on plug application?

[RobertISaar]

4 teeth would perfectly imitate a dizzy on a 8 cylinder motor, since every two revolutions(one 4 stroke cycle) would be 8 pulses.

[dave w]

4 teeth would perfectly imitate a dizzy on a 8 cylinder motor, since every two revolutions(one 4 stroke cycle) would be 8 pulses.

To bench test the '0411, I made an 8 tooth crank trigger wheel that I could "Sync" with the cam position sensor in the distributor.

dave w