EFI 58x™ SBC

Whether you are updating your early SBC electronic fuel injection system to use a newer ECU, adding electronic fuel injection to your SBC engine for the first time, or update the ignition system on your carbureted SBC engine, an EFI 58x SBC conversion will equip your SBC engine with the crank and cam signal components necessary to be controlled by popular GM and aftermarket LS-Series compatible ECUs. SBC balancers with a thickness more than 1.325" will not clear timing cover and crank sensor. Balancers designed for 96-newer SBC application may be compatible.

EFI Connection's 58x SBC 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 SBC engines! Available with 1x and 4x cam signal solutions.

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

120 00136
PART # 1995-OLDER
SBC ENGINE
1996-NEWER
SBC ENGINE
SINGLE ROW
TIMING SET
DOUBLE ROW
TIMING SET
FLAT NOSE
CAMSHAFT
STEP NOSE
CAMSHAFT
1X CAM
SIGNAL
4X CAM
SIGNAL
CAM BUTTON
REQUIRED
120-00135   X X     X X    
120-00145 X X X   X X X    
120-00136 X X X X X X X    
120-00133 X X X X X   X   X
120-00137 X X   X   X X    
120-00141 X X   X X   X    
120-00134 X X   X X   X   X
120-00139 X X   X   X   X  
120-00142 X X   X X     X  
120-00138 X X   X X     X X
Part # Description Price Qty
120 00135 120-00135 EFI 58x Conversion Kit w/ 1x Cam Sync Distributor for 1996-Newer SBC Vortec Engines w/ Single Row Timing Set $390.00
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 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

Out of stock

120 00139 120-00139 EFI 58x Conversion Kit w/ 4x CMP in Timing Cover (Step Nose) for SBC Engines w/ Double Row Timing Set w/ Step Nose Cam $870.00
120 00142 120-00142 EFI 58x Conversion Kit w/ 4x CMP in Timing Cover (Flat Nose) for SBC Engines w/ Double Row Timing Set w/ Flat Nose Cam w/o Cam Thrust Button Requirement $890.00
120 00138 120-00138 EFI 58x Conversion Kit w/ 4x CMP in Timing Cover (w/ Cam Button) for SBC Engines w/ Double Row Timing Set w/ Cam Thrust Button Requirement $935.00

Out of stock