Product Summary

Universal Fit

  • An LS engine swap is a no-brainer when it comes to adding some affordable horsepower to a project car, but any swap comes with its share of headaches, including wiring - that's where Speedway Motors' engine and transmission wiring harness comes in
  • Fits LS1/LS6 (5.7L) Corvettes and Vortec (4.8L, 5.3L, 6.0L) GM trucks
  • Fits applications with LS1 intake manifolds and 4L60E transmissions
  • Throttle Style: Drive-by-Cable
  • Injector Plug Style: EV1
See more details

Key Specs

MFG. Part #289WH1201
BrandSpeedway Motors
Injection StyleMulti-port
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 289WH1201 Details

An LS engine swap is a no-brainer when it comes to adding some affordable horsepower to a project car, but any swap comes with its share of headaches, including wiring. That's where Speedway Motors' engine and transmission wiring harness comes in. Fits LS1/LS6 (5.7L) Corvettes and Vortec (4.8L, 5.3L, 6.0L) GM trucks. Fits drive-by-cable applications with LS1 intake manifolds and 4L60E transmissions

Speedway Motors 289WH1201 Specifications

KEY SPECS
MFG. Part #289WH1201
BrandSpeedway Motors
Injection StyleMulti-port
GENERAL
Fuse Block IncludedYes
Metering StyleMAF and MAP
Sold in QuantityEach

Ratings & Reviews

4.4

5 Reviews

Overall Assessment

Customers praise the product for its high quality, remarking on the clean, solid construction of the harness. Notable aspects such as affordability and functionality were greatly appreciated, with one user finding it particularly effective for their Ford LTD LS Swap. The product has been recommended for its practicality and superiority over comparable alternatives.

4.4

5 reviews

5

4

4

0

3

0

2

1

1

0

Filter by Ratings

Probably not

2.0

3 months ago

McGyver

PT , Wa

Verified

I was going to use it in place of my existing harness because I changed to an electrically controlled Transmisssion. I needed to modify it to fit my current destinations and terminations. During this I discovered that some of the plugins were the opposite of what they should be. Also the injector plugin were all different. I could have spliced in my plugs but the wire colors don't match so it would have been very difficult. Now I can't return it due to modifications and I couldn't use it.

Amazing product

5.0

4 months ago

Gio

Los Angeles

Verified

Has everything that I needed and was looking for for my LS swap onto my 87 Monte Carlo luxury sport

Would Recommend

Yes

5.0

a year ago

Cortez

Huttig Arkansas 71747

Verified

Everything great

Would Recommend

Yes

5.0

2 years ago

Bob

Nebraska

Verified

Good clean quality harness no issues

Would Recommend

Very affordable harness and got the job done.

5.0

4 years ago

NXGonzo Video

Wichita Falls TX

Verified

Using the harness in my Ford LTD LS Swap

Showing 5 of 5 reviews

Questions & Answers

3 Questions • 3 Answers

Is this for 24 tooth reluctor or 52 tooth

by Kyle

• 2 years ago

1 answer

Will this work with a 4L80E trans?

by Ray C

• 3 years ago

1 answer

do the harness come with relays for dual fan

by lafayette

• 4 years ago

1 answer

3 of 3 questions shown

Fitment

  • GM LS1

  • GM LS1

  • GM LS1

  • GM LS1

Customer Impersonation Script