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EFI 58x™ 4.3L V6

Whether you are updating your early 4.3L V6 electronic fuel injection system to use a newer ECU, adding electronic fuel injection to your 4.3L V6 engine for the first time, or update the ignition system on your carbureted 4.3L V6 engine, an EFI 58x 4.3L Chevy V6 conversion will equip your 4.3L Chevy V6 Chevy engine with the crank and cam signal components necessary to be controlled by popular aftermarket LS-Series compatible ECUs.

EFI Connection's 58x 4.3L V6 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 4.3L Chevy V6 engines!

The differences in the variety of available 4.3L Chevy V6 engines required us to design and manufacture many different 58x 4.3L V6 conversion kits. Get started by using the conversion matrix below to choose the appropriate 58x 4.3L V6 conversion for your engine.

120 00145
PART # 1994-OLDER
4.3L ENGINE		 1995-2009
4.3L ENGINE		 SINGLE ROW
TIMING SET		 DOUBLE ROW
TIMING SET		 FLAT NOSE
CAMSHAFT		 STEP NOSE
CAMSHAFT		 1X CAM
SIGNAL		 CAM BUTTON
REQUIRED
120-00145 X   X   X X X  
120-00136 X   X X X X X  
120-00133 X   X X X   X X
120-00199   X X     X X  
120-00137 X     X   X X  
120-00141 X     X X   X  
120-00134 X     X X   X X
Part # Description Price Qty
120 00145 120-00145 EFI 58x Conversion Kit w/ 1x Cam Sync Distributor for SBC & 1994-Older 4.3L V6 Engines w/ Single Row Timing Set $445.00
120 00136 120-00136 EFI 58x Conversion Kit w/ 1x Cam Sync Distributor w/ Billet Aluminum Timing Cover for SBC & 1994-Older 4.3L V6 Engines w/ Single/Double Row Timing Set $675.00
120 00133 120-00133 EFI 58x Conversion Kit w/ 1x Cam Sync Distributor w/ Cam Button in Billet Aluminum Timing Cover for SBC & 1994-Older 4.3L V6 Engines w/ Single/Double Row Timing Set $780.00
120-00199 EFI 58x Conversion Kit w/ 1x Cam Sync Distributor for 1995-Newer 4.3L V6 Engines w/ Single Row Timing Set $395.00
120 00137 120-00137 EFI 58x Conversion Kit w/ 1x CMP in Timing Cover (Step Nose) for SBC & 1994-Older 4.3L V6 Engines w/ Double Row Timing Set w/ Step Nose Cam $860.00
120 00141 120-00141 EFI 58x Conversion Kit w/ 1x CMP in Timing Cover (Flat Nose) for SBC & 1994-Older 4.3L V6 Engines w/ Double Row Timing Set w/ Flat Nose Cam w/o Cam Thrust Button Requirement $890.00
120 00134 120-00134 EFI 58x Conversion Kit w/ 1x CMP in Timing Cover (w/ Cam Button) for SBC & 1994-Older 4.3L Engines w/ Double Row Timing Set w/ Cam Thrust Button Requirement $935.00

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