I saw another write up that said PS pump, but nothing about the Air Pump, so I guess whoever wrote it didn't know the difference! Or probably though it was a PS because that would be the normal location on a SBC.
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Originally Posted by Shownomercy
Can you shed some more info on the LS1 conversion kit?
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From what I’ve read, the solution they are working on uses a stock LT1 wiring harness (96-97 = Crank position wiring already there, pre 96 you probably just need to add that wiring), then some type of connector/conversion for the harness to plug into a 99+LS1 ECM. The signal for the cam position was originally done by a sensor that will bolt in the stock location of the opti,, but that might change due to the crank sensor ( read below)….
On the test engine a double roller chain and E-WP is used. I’m not 100% sure if this is actually needed, or if they were just planning that anyone doing this would want to take advantage of higher RPMs so a stock chain would be a typical swap as well?
The problem they have is getting a quality signal for the crank, the LT1 crank sensor is different then the LS1, and cannot easily be adapted. Placing a small wheel within the timing cover doesn’t work because there really isn’t any clearance in the LT1 cover. So the solution may be some type of external wheel, or possible something within the timing chain cover.
As I said previously, my ECM uses an external crank wheel, people had problems with the original mounting point if they ran an E-WP it caused interference. So when I designed my setup I built a relocation bracket. Si it could be some type of signal interfernace issue they are having?
Other then that the rest of the harness basically remains the same.
They have driven the car a few hundered miles and reported it runs great when the crank sensor is working properly.
So once the conversion is done you have no opti, remote coils, an ECM with more potential And you can control the 4L80E trans with it!
** Also note you could now tune your LT1 with HPTuner, allow you to use very robust software,,, And we have local tech support!