EFI 24x™ LT1/LT4

An EFI 24x 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 LS-Series compatible ECUs.

EFI 24x™ LT1/LT4

EFI 24x™ LT1/LT4

Since 2008, our 24x LT1 conversions have been eliminating the optispark distributor and transforming LT1 engines.

EFI Connection's 24x LT1 systems are designed to output the 24x crank and 1x cam signal of a GM Gen III LS-Series engine. This means that LS1 compatible ECUs can now be used on 24x equipped LT1 engines!

The differences in the variety of available LT1 engines required us to design and manufacture many different 24x LT1 conversion kits. Get started by using the conversion matrix below to choose the appropriate 24x 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
WITH 2.25"
ATI HUB
WITH BBC
SNOUT
120-00067 X   X   X X    
120-00116   X X   X X    
120-00117 X X X X X      
120-00118 X X X X   X    
120-00090 X X   X   X    
120-00182 X X X X X   X  
120-00183 X X X X   X X  
120-00119 X X   X   X X  
120-00184 X X X X X   X X
120-00185 X X X X   X X X
120-00111 X X   X   X X X
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