Speartech Fuel Injection Systems

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Speartech Fuel Injection Systems We developed the first LS standalone control system back in the 90's and have been enabling the world to swap their favorite classic cars with ease since.

We pride ourselves in craftsmanship, innovation, and manufacturing products to exceed expectations. www.speartech.com

10/07/2026

We don’t post much! We’re working. This is a unique custom layout going overseas. This will have several breakout points for the fuel module, ac pressure, etc.

We have full emissions harnesses still in stock from when Holley owned us. These are ready to go units and marked down. ...
09/29/2026

We have full emissions harnesses still in stock from when Holley owned us. These are ready to go units and marked down. If your an off road vehicle, these will work and you can ignore the rear o2's, purge, EVAP Vent, and/or fuel tank pressure sensor. no wait time on these select few harnesses. Give us a call and make an offer! We're looking to clear shelf space.

https://www.speartech.com/Garage_Sale_s/1832.htm

We helped with a harness at the Camshaft Shootout this year. Griffin Motorsports just sent us this mouse pad as a thank ...
09/25/2026

We helped with a harness at the Camshaft Shootout this year. Griffin Motorsports just sent us this mouse pad as a thank you and a delightful letter. I've just upgraded the work station and gained about 15 words per minute now! Thanks Griffin!

Customer Highlight! Bill stopped by the shop on his way to Duck Tail. He's from Illinois but just got back from a long 6...
09/24/2026

Customer Highlight! Bill stopped by the shop on his way to Duck Tail. He's from Illinois but just got back from a long 6K mile trip down route 66 and all around the West Coast. We love it when folks DRIVE their builds. He's had our harness installed since 2016! Modified LS DBC with 4L60E. I believe Bill stated this is a 1952 model truck!

We still have several Gen IV LS3 harnesses in stock and ready to go, see specs below. All of these kits were TESTED on a...
09/23/2026

We still have several Gen IV LS3 harnesses in stock and ready to go, see specs below. All of these kits were TESTED on a our shop engine & transmission to verify proper functionality prior to boxing up!

-42" in-car harness layout
-Wired for C6 Vette Pedal (we stock/sell these for an additional fee)
-Vette C6 Front End Drive (also works with Holley)
-LS3 MAF provisions
-C6 Vette LS3 O2 provisions
-Includes firewall grommet

4L60 (13-pin or 15-pin), 4L80E, 6L80, and T56 Magnum kits available.
Harnesses are $995.00 + shipping.
If you need a "package" with the pedal, computer(s), O2's, and/or LS3 MAF give us a call and we can discuss package pricing.
765-378-4908
Speartech.com

If this doesn't fit your application, we can build you custom harness BUILT TO ORDER, to match your specific setup! Avoid the 5-6 week lead time and get your kit TODAY!

We're back from LS Fest. Contact us to get those orders made and get that custom BUILT IN HOUSE and TESTED IN HOUSE harn...
09/14/2026

We're back from LS Fest. Contact us to get those orders made and get that custom BUILT IN HOUSE and TESTED IN HOUSE harness made. We met some great people and got to see some customer's of ours in person! It's always great to put a face to the names and discuss the builds.

Lokar shifters are back in stock! Pricing online includes the required tap shift switch box module (TSSB0317) AND our in...
09/01/2026

Lokar shifters are back in stock! Pricing online includes the required tap shift switch box module (TSSB0317) AND our instructions for easy integration.
The shifter includes a micro switch for neutral safety. However, if you want reverse lights, we have a CAN relay module for that.
-Works with GMPP Connect and Cruise Kits (no programming needed)
-Works with LS/6L80 Gen IV tunes with a Corvette tune or Camaro tune with tap shift enabled. (requires proper DTC's to be disabled for ABS/BCM or tap shift won't work)
Contact us with any questions!
Shifter!
https://www.speartech.com/LokarShifter_p/es6l80em.htm
Reverse Relay (optional add-on)
https://www.speartech.com/product_p/6lreverselightrelay.htm

Flashback Friday. This was 2017 when we had our shop truck. 1969 C10 with a LT4/8L90 swap that we built for R&D purposes...
08/21/2026

Flashback Friday. This was 2017 when we had our shop truck. 1969 C10 with a LT4/8L90 swap that we built for R&D purposes. A few years later we pulled this powertrain to install the LT5/10L90 kit that we developed!

- Notably, despite the LT5's limited production run, we continue to receive occasional orders for this configuration, a true testament to the LT5's appeal!

These guys are awesome. Reach out for your swap needs!
08/14/2026

These guys are awesome. Reach out for your swap needs!

08/11/2026

Tap shift Tuesday. This video from 2020 shows us installing the 10L90 gated shifter with tap shift and reverse light controls in our old '69 C10 shop truck. Like all our products, extensive testing is done is house. If you have a Camaro tune with a 10L90 or even CTS-V/Camaro 8L90 setup, you can use this gated shifter.
https://www.speartech.com/product_p/10l-tap-shift.htm

Address

3574 E State Road 236
Anderson, IN
46017

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+17653784908

Website

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