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EFI 58x™ LT1/LT4

Whether you are updating your LT1/LT4 electronic fuel injection system to use a newer ECU or update the ignition system on your carbureted LT1 engine, an EFI 58x LT1/LT4 conversion will equip your LT1/LT4 engine with the crank and cam signal components necessary to be controlled by popular GM and aftermarket LS-Series compatible ECUs.

EFI Connection's 58x LT1/LT4 systems are designed to output the 58x crank signal of a GM Gen IV LS-Series engine. This means that 58x compatible ECUs can now be used on 58x equipped LT1/LT4 engines! Available with 1x and 4x cam signal solutions.

The differences in the variety of available LT1/LT4 engines required us to design and manufacture many different 58x LT1/LT4 conversion kits. Get started by using the conversion matrix below to choose the appropriate 58x LT1 conversion for your engine.

PART #	1992-1995 LT1 ENGINE	1996-1997 LT1 ENGINE	SINGLE ROW TIMING SET	DOUBLE ROW TIMING SET	MECHANICAL WATER PUMP	ELECTRIC WATER PUMP	1X CAM SIGNAL	4X CAM SIGNAL	WITH 2.25" ATI HUB	WITH BBC SNOUT
120-00200	X		X		X	X	X
120-00201		X	X		X	X	X
120-00198	X	X	X	X	X		X
120-00202	X	X	X	X		X	X
120-00231	X	X	X	X	X		X		X
120-00232	X	X	X	X		X	X		X
120-00233	X	X	X	X	X		X		X	X
120-00234	X	X	X	X		X	X		X	X
120-00132	X	X		X		X	X
120-00127	X	X		X		X		X
120-00203	X	X		X		X	X		X
120-00204	X	X		X		X		X	X
120-00205	X	X		X		X	X		X	X
120-00206	X	X		X		X		X	X	X

Part #	Description	Price
120-00200	EFI 58x Crank and 1x Cam Signal Kit w/ CKP Sensor w/ CMP Sensor for 1992-1995 LT1/LT4 Engines w/ Single Row Timing Set	$550.00
120-00201	EFI 58x Crank and 1x Cam Signal Kit w/o CKP Sensor w/ CMP Sensor for 1996-1997 LT1/LT4 Engines w/ Single Row Timing Set	$495.00
120-00198	EFI 58x Crank and 1x Cam Signal Conversion Kit (w/ Mechanical Water Pump) for 1992-1997 LT1/LT4 Engines w/ Mechanical Water Pump	$850.00
120-00202	EFI 58x Crank and 1x Cam Signal Conversion Kit (w/ Electric Water Pump) for 1992-1997 LT1/LT4 Engines w/ Electric Water Pump	$840.00
120-00231	EFI 58x Crank and 1x Cam Conversion Kit (w/ Mechanical Water Pump w/ 2.25" Hub) for 1992-1997 LT1 Engines w/ Mechanical Water Pump w/ ATI 2.25" Hub	$895.00
120-00232	EFI 58x Crank and 1x Cam Conversion Kit (w/ Electric Water Pump w/ 2.25" Hub) for 1992-1997 LT1 Engines w/ Electric Water Pump w/ ATI 2.25" Hub	$905.00
120-00233	EFI 58x Crank and 1x Cam Conversion Kit (w/ Mechanical Water Pump w/ BBC Snout) for 1992-1997 LT1 Engines w/ Mechanical Water Pump w/ ATI 2.25" Hub w/ BBC Snout	$0.00
120-00234	EFI 58x Crank and 1x Cam Conversion Kit (w/ Electric Water Pump w/ BBC Snout) for 1992-1997 LT1 Engines w/ Electric Water Pump w/ ATI 2.25" Hub w/ BBC Snout	$1100.00
120-00132	EFI 58x Crank and Cam Signal Conversion Kit w/ 1x CMP in Timing Cover for 1992-1997 LT1/LT4 Engines	$900.00
120-00127	EFI 58x Crank and Cam Signal Conversion Kit w/ 4x CMP in Timing Cover for 1992-1997 LT1/LT4 Engines	$915.00
120-00203	EFI 58x Crank and Cam Signal Conversion Kit w/ 1x CMP in Timing Cover (w/ Electric Water Pump w/ 2.25" Hub) for 1992-1997 LT1 Engines w/ Electric Water Pump w/ ATI 2.25" Hub	$920.00
120-00204	EFI 58x Crank and Cam Signal Conversion Kit w/ 4x CMP in Timing Cover (w/ Electric Water Pump w/ 2.25" Hub) for 1992-1997 LT1 Engines w/ Electric Water Pump w/ ATI 2.25" Hub	$940.00
120-00205	EFI 58x Crank and Cam Signal Conversion Kit w/ 1x CMP in Timing Cover (w/ Electric Water Pump w/ BBC Snout) for 1992-1997 LT1 Engines w/ Electric Water Pump w/ ATI 2.25" Hub w/ BBC Snout	$1070.00
120-00206	EFI 58x Crank and Cam Signal Conversion Kit w/ 4x CMP in Timing Cover (w/ Electric Water Pump w/ BBC Snout) for 1992-1997 LT1 Engines w/ Electric Water Pump w/ ATI 2.25" Hub w/ BBC Snout	$1085.00