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.

120 00198
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 Qty
120 00200 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 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 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 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 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 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 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 Item is not For Sale
120 00234 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 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 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 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 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 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 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