You need a 24x Crank and 1x Cam Signal
For the LS1 PCM to work on any V8 engine, it needs the correct crank signal (24x) and cam signal (1x). The 96-newer engines already have a crank sensor,
so we relied on the 96-newer timing cover to mount a sensor and allow provision for the 24x crank reluctor.
Do you have an early Small-Block Chevy? Use a 96-newer Vortec timing cover. Install the 24x crank reluctor, install the Vortec timing cover, install the
24x crank sensor, and install the Vortec distributor with sealed cap. This will equip your engine with the crank/cam signals required by the LS1 PCM.
Do you have a 96-97 LT1? Then remove the timing cover, remove the 4x crank reluctor, install the 24x crank reluctor in its place, replace the original
4x crank sensor with the 24x crank sensor, and then install the timing cover. Install our camshaft sensor kit. The cam sensor housing housing bolts/seals
in place of the optispark (the optispark is 100% gone). The 1x reluctor is installed to the front of the cam timing sprocket. This will equip your engine
with the crank/cam signals required by the LS1 PCM.
Do you have a 92-95 LT1? Get the 96-97 timing cover. Mill down the crankshaft hub the thickness of the 24x crank reluctor (2.5mm) to avoid misalignment of the
accessory belt, install the 96-97 LT1 crank key, file the crank key to be flush with the crank so that the crank hub does not crush the key during
installation, install the 24x crank reluctor, and install the 96-97 timing cover with 24x crank sensor. Install our camshaft sensor kit. The cam sensor
housing bolts/seals in place of the optispark (the optispark is 100% gone). The 1x reluctor is installed to the front of the cam timing sprocket.This will
equip your engine with the crank/cam signals required by the LS1 PCM.
| Description | Availability | Price | |
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24x Package for Early Small-Block Chevy
For use with early small-block Chevy engines with a single or double roller timing chain. Package includes 24x crankshaft reluctor,
24x crankshaft sensor, Vortec timing cover, aluminum Vortec distributor with sealed cap. This package equips the early Small-Block Chevy
engines with the 24x crank and 1x cam signals required to use the LS1 PCM.
| In Stock | $515.00 |
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24x Package for LT1 and LT4
For use with 92-97 LT1 and LT4 engines with a single roller timing chain only. Package includes 24x crankshaft reluctor,
24x crankshaft sensor, aluminum cam sensor housing, 1x camshaft reluctor, and LS2 camshaft sensor. This package equips the LT1 and LT4
engines with the 24x crank and 1x cam signals required to use the LS1 PCM.
| In Stock | $525.00 |
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You need the LS1 PCM
The 24x crank and 1x cam signals are intended for the LS1 PCM. This includes all Gen 3 LS type PCMs. EFI Connection recommends the 2001-2002 GM# 12200411 LS1
PCM due to its price, availability, and versatility.
| Description | Availability | Price | |
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Used LS1 PCM - GM# 12200411
Pulled from a 2001-2002 GM vehicle. PCM contains the original vehicle calibration. You must reflash with the operating system
and calibration suited for your application.
| In Stock | $100.00 |
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You need a wiring harness to support both the LS1 PCM and your car
EFI Connection builds brand new engine harnesses. Please contact us with your build requirements.
| Description | Availability | Price | |
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Stand Alone 24x Engine Wiring Harness
EFI Connection builds brand new engine wiring harnesses for the TPI, LT1, and LS type engines. Our 24x stand alone harnesses are built to order
so that you receive the best possible engine wiring harness for your vehicle. Installation is very straight-forward with only a few wires to connect to run the
engine. A fuse block and fuel pump relay is included. These harnesses are built after being ordered and have an estimated 3 week lead
time. We recommend that you contact us by phone to order this harness, but if purchasing online, we will contact you to get specific vehicle requirements.
| Build to Order | $650.00 |
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1985-1988 24x TPI Camaro/Firebird Plug-and-Play Engine Wiring Harness
EFI Connection has invested in all of the brand new GM (Delphi) harness components to recreate the 1985-1988 TPI engine harness, but for use with
the LS1 PCM. These harnesses are built after being ordered and have an estimated 3 week lead time. We recommend that you contact us by phone to order this
harness, but if purchasing online, we will contact you to get specific vehicle requirements. Due to the additional complexity of the 1989-1992 Camaro/Firebird engine
harness, we can only offer a new fuel injection harness segment that you will have to graft into your original engine harness.
| Build to Order | $650.00 |
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1993-1997 24x LT1 Camaro/Firebird Plug-and-Play Engine Wiring Harness
EFI Connection has invested in all of the brand new GM (Delphi) harness components to recreate the LT1 engine harness, but for use with
the LS1 PCM. These harnesses are built after being ordered and have an estimated 3 week lead time. We recommend that you contact us by phone to order this
harness, but if purchasing online, we will contact you to get specific vehicle requirements.
| Build to Order | $850.00 |
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Do-It-Yourself LT1 Engine Harness Kit
The 94-97 LT1 engine harness is very similar to an LS1 harness. It even uses the same terminals in the PCM connetors. EFI Connection offers a DIY harness kit of parts
for reworking the LT1 engine harness. While we do not provide step-by-step procedures, we have taken the time to summarize the PCM connector views so that you can see
the difference between the LS1 PCM and the LT1 PCMs.
EFI Connection recommends that you work with the GM schematics while doing engine harness rework. Use
the PCM comparison information we have provided freely, at your own risk.
Information provided represents injectors/coils 2&3 and 7&4 swapped. |
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| Description | Availability | Price | |
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24x LT1 Harness Do-It-Yourself Kit
Are you a DIYer? Save some cash on the 24x LT1 conversion! This kit will provide all harness components you will need to add to your
original 94-97 Camaro/Firebird LT1 engine harness when repinning it for the LS1 PCM: PCM connectors, extra PCM terminals, coil harness, cam sensor harness,
crank sensor harness, and second knock sensor harness. LS1 PCM conversion instructions not included.
| In Stock | $100.00 |
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You need 8 LS type coils, a harness to connect the coils, and a method of attaching the coils to your engine
You need to recalibrate the LS1 PCM for your application
Forget about a hand held programmer. This requires software like EFILive or HPTuners.
EFI Connection does not provide PCM engine calibrations.
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