Speedway 1990-1992 Tuned Port Speed Density Engine Harness
Speedway 1990-1992 Tuned Port Speed Density Engine Harness
Speedway Motors

|

#91000990

Speedway 1990-1992 Tuned Port Speed Density Engine Harness

  • It is made from premium grade GXL jacketed automotive wire
  • All the primary grounding is done at the head or block and grounding points are isolated from each other to reduce electrical interference and minimize ground looping
  • Includes a OBD1 diagnostic port for connection to scanners and tuning tools
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$328.99

/each

On Backorder

This part is Backordered. We estimate this item will ship on or before November 15th.


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Product Summary

Universal Fit

  • It is made from premium grade GXL jacketed automotive wire
  • All the primary grounding is done at the head or block and grounding points are isolated from each other to reduce electrical interference and minimize ground looping
  • Includes a OBD1 diagnostic port for connection to scanners and tuning tools
  • The harness wiring matches GM wiring configuration and jacket colors follow GM color coding for easy identification
  • Can be installed to run engine in 20 minutes, but figure 4-6 hours for a professional installation
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Key Specs

MFG. Part #91000990
BrandSpeedway Motors
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Speedway Motors 91000990 Details

Take the fear out of electronic fuel injection! These engine wiring harnesses are designed to make your engine transplant effortless. Each new harness contains in-depth application-specific instruction sheets, clearly marked factory GM connectors, labeled GXL jacketed wire, GM color coding, and pre-fitted corrugated slit loom for an extra value and professional look. All un-needed emissions wiring is eliminated to make the install as simple and reliable as possible.

  • Made from premium grade GXL jacketed automotive wire
  • Most wiring is larger gauge than stock application for durability
  • No splices to reduce points of failure
  • All primary grounding is done at the head or block and grounding points are isolated from each other to reduce electrical interference and minimize ground looping
  • Harness wiring matches GM wiring configuration and jacket colors follow GM color coding for easy identification
  • All electrical connectors are made by Delphi or Packard and are direct fit for GM cars and trucks
  • Can be installed to run engine in 20 minutes, but figure 4-6 hours for a professional installation
  • OBD1 diagnostic port for connection to scanners and tuning tools

Warranty Information

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This harness is covered under warranty for the lifetime of the original owner against defects in workmanship within the wiring harness only, not time, or any damage in result of defective workmanship of the wiring.

Speedway Motors 91000990 Specifications

KEY SPECS
MFG. Part #91000990
BrandSpeedway Motors
GENERAL
NotesStandard length. For ECM 1227730. Will not work with weather pack ECM 1227727.
Sold in QuantityEach

Ratings & Reviews

4.8

4 Reviews

Overall Assessment

Customers appreciate the product’s robust construction and clearly labeled connections, reflecting its quality and usability. The harness is frequently recognized for its superior quality, receiving maximum customer ratings. Users' loyalty indicates a notable preference over competitors, with repeated purchases due to its exceptional performance and affordable price.

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4.8

4 reviews

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4.0

2 years ago

Chucky

Arvada co

Verified

Cheep.wire rap

Would Recommend

I would buy this product again

5.0

9 years ago

John Rock

SC

Verified

Well built with clearly marked connections

Would Recommend

Yes

5.0

9 years ago

John Rock

SC

Verified

Harness is of good quality and all connections are well labeled.

Would Recommend

Would rate this harness a10!

5.0

9 years ago

Jon boy

South Carolina

Verified

Great product and price,customer service was outstanding. Will buy from Speedway again and again!

Would Recommend

Showing 4 of 4 reviews

Questions & Answers

3 Questions • 3 Answers

To use this harness with the original speed density ECM, does the ECM have to be recalibrated because of the illiminateed emissions wiring for the engine to run effeciently?

by Chuck

• 7 years ago

1 answer

View Answer

if using a turbo 350 trans what has to be done with the hook up for 700r ?

by pug

• 9 years ago

1 answer

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Which computer does this harness fit?

by

• 14 years ago

1 answer

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