Speed Scene Wiring
L29 Big Block Wire Harness
1998 L29 Vortec Big Block — built from scratch with GM connectors, terminals, and seals. The 4L80E transmission harness for the torque connoisseur. USA made since 1999.
Start a Build1998 L29 Vortec Big Block Harness
This 1998 L29 Vortec Big Block harness is for the torque connoisseur. This application did not require us to run full emissions, so only the vital engine running condition sensors were used. This SSW wire harness is built from scratch with GM connectors, terminals and seals.
The Vortec for this year has four HO2 sensors — two pre-heated oxygen sensors and two post heated oxygen sensors. The factory trans application is the 4L80E, one of the strongest transmissions General Motors has to offer. Whether it's a street rod, tow rig, rock crawler, or ski-lift — (not joking, we do them) — this harness is built for the job.
HO2 Sensor Configuration
- Two pre-heated oxygen sensors (upstream)
- Two post heated oxygen sensors (downstream)
- Total: four HO2 sensors
EPA Approved Checklist
- VSS Circuit
- Diagnostic Link Connector
- Correct Emissions Connectors
- VSS Pigtail
- Alternator
- Tach Pigtail
For Special Requests
Have a unique application or need a custom configuration? Contact SSW directly and we'll build the harness to your exact spec.
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