EFI 58x™ LT1/LT4

An EFI 58x LT1 conversion will equip your 1992-1997 LT1/LT4 Chevy engine with the crank and cam signal components necessary to be controlled by popular GM and aftermarket LS-Series compatible ECUs.
EFI 58x™ LT1/LT4

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
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