thanks for the info.. i need to shift @ or about 8300 so looks like the swap will be a+

 

Nice work. I knew it was just a matter of time till someone converted the opti to make this work. Lose the opti and have LS1 tuning and 3 bar capabilities...Count me in. Now I just have to figure out where to hide the ugly ls1 coils!!! LOL

 

$525.00 24x LT1 Conversion Package
EFI Connection is now offering the 24x LT1 conversion package. The package includes...

Our 24x crankshaft reluctor and 24x crank sensor. This reluctor has been developed by EFI Connection and is the first of its kind. Each 24x reluctor is CNC cut from one piece of steel. It installs within the 96-97 LT1 timing cover for a sealed, very factory type installation. This 24x reluctor also installs within the early small block Vortec timing cover for non-LT1 applications.



Our LT1 camshaft sensor, housing, and 1x target. If purchased separately, outside the $525 package price, these pieces are bundled together for $250. The housing below is an early production housing. The only difference in appearance will be that the face of the housing will retain a cast aluminum look. This housing replaces the optispark module.



An engine harness, ignition coils, PCM, and other items are not included in this package. 24x LT1 plug and play conversion harnesses for the Camaro/Firebird are priced at $800. Many other items are offered through EFI Connection.

 

Looks great!

Now just wondering what the total cost for conversion would be, including these parts and everything else including software? Anybody feel like assembling a quick parts list with approx prices? I dont know what's needed since I have LT1 PCM.

 

Harness $800
24x LT1 package $525
coils, used +/-$120
ECU, used +/-$75
front cover, used +/-$50
3 bar map =) $60
Total roughly $1625
I am going with HP tuners pro with the tuning book for an additional $700

Grand total for me +/- $2350

 

Well, I'm just waiting for EFI connection now. This is a great product for me, as I am the only idiot who took out their LS1 and is putting an LT1 in its place in my 99 T/A. Mike is setting up my harness so that it is plug and play with my 99 body, so no other wiring changes will have to be made. Here's the progress.

 

But to be fair, that's a potent LT4 you have there and with the LS1 ignition system, who cares that it's a different engine? Looks great!

 

A big thanks to Mike in Wisconsin for sharing videos of his 24x LT1 installation progress. Mike sent a few videos of the engine running on the dyno. The engine may be hooked up to the water brake this week to apply load.

Keep in mind that Mike is using a calibration that we are using on our test stand. It's rough at best and needs a lot of work. However, you'd hardly know it seeing this engine run.

First QuickTime Video
Second QuickTime Video
Third QuickTime Video

Mike purchased:
- 24x LT1 crank reluctor
- he had a 24x crank sensor
- 24x LT1 conversion harness (stand alone type for his pickup truck...which works well for the dyno)
- cam sensor, housing, and target
- 96-97 LT1 crank key (GM# 12550096)
- used LS type coils (truck coils I think)

His comments have been:
- it fired up first try
- throttle response is perceived as better than with the original electronics
- a few emissions trouble codes have set (fuel level, fuel sensor, AIR pump, skip shift...all need to be disabled in the calibration)

Mike
EFI Connection

 

Do you really need that $800 harness? How about splicing into the LT1 harness and adding coil wires or is the LS1 PCM harness connection the tricky part to get?

 

If you know how to modify the LT1 harness, then you don't need a new harness. It's a project for sure and something that not everyone will want to tackle. We stock everything needed for the harness conversion. In other words, you're going to find that you need the LS1 PCM connectors, crank sensor connector, coil harness connectors, more automotive (TXL) wire, and so on...

Mike
EFI Connection

 

Here's an exploded view of all the hardware involved to equip an LT1/LT4 engine with the signals required by the Gen3 LSx PCMs.

The 1x cam reluctor bolts to the cam sprocket and is located by the pin on the cam.

The cam sensor housing replaces the optispark module.

The 24x crank reluctor installs on the crankshaft and is located by the 96-97 LT1 crank key (GM# 12550096).

No adjustments. Bolt it all on and it's ready to run.

 

For the wire harness DIYers...all of the harness components you will need while converting your 93-97 Camaro/Firebird LT1 engine harness to use the LS1 PCM...



PCM Connectors
Two LS1 PCM connectors, retainers, and dress covers.

PCM Terminals
Some are going to add nitrous control, valet mode, or some other functionality and having a few extra PCM terminals will come in handy.

Coil Pack Harnesses (PCM Side)
Pre-cut to length for the f-body harness. PCM ends are terminated. Pink wires go to 12v ignition and black wires go to ground.

24x Crank Sensor Harness
24x crank sensor connector with wire to the PCM. PCM ends are terminated.

Knock Sensor Harness
Some may choose to add a 2nd knock sensor. Not required, but the LS1 calibration supports it by default. Wire length puts the connector at bank 2.

Cam Sensor Harness
Are you familiar with the optispark jumper harness? Well, this is the same idea. The gray connector plugs into the mating black connector at the intake manifold between injectors 4 & 6. DIYers will rework their LT1 engine harness so that three of those wires mate to this cam sensor jumper harness. It's a factory look and makes future service of the harness easy. We could think of more reasons to do it this way than to not. Don't want the extra connection? Cut the gray connector and use the cam sensor connector to splice into your LT1 engine harness.

 

How does this setup differ from the one being posted on LS1Tech?

lt1 runs on ls1 computer using modded OPTI

 

The one that AKAFRED built uses a modified wheel in the opti. This setup no longer uses an optical sensor an uses a setup very similar to the LS1 engine. AKAFRED's setup could still be affected by water failure, with this setup that is not an issue. Both systems do the same thing, but just do it differently.

 

I see, so this setup has a crank and cam sensor where the other one uses the cam for crank and cam reference?