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Welcome to the new Speartech Fuel Injection Systems website! Put 23 years of GM Engineering experience to work for you!

We now offer online ordering for many of our products. Our harnesses are still call to order at (765) 378-4908.

We ship worldwide! Call us to place an international order.


We've got a brand new, complete C7 Corvette Chassis which should make a nice, unique project for someone. It will be available shortly. In the meantime, click the image below to read some more about it!




Check us out on Engine Power! Part of the new "PowerNation" line of shows on SpikeTV! They used our harness package on Episode 6 as part of their feature on converting an LS7's stock "dret" oil system to a wet sump to make swapping an LS7 easier. Our mention starts around the 11:00 mark. Click here to check it out!




Check us out on HorsepowerTV! They used our harness package on their Nissan 240SX / LSX swap project featured on air. Our mention starts around the 5:40 mark. Click here to check it out!




The Gen 5 LT1 is here! See it running!









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Featured Products


LS3/6L80
Our Price: $14,250.00
GM LS-Series Engines: The Complete Swap Manual By Joseph Potak
List Price: $27.99
Our Price: $24.99
Sale Price: $24.99
Savings: $3.00