Harper's Performance

01/21/2026

It's not just another Wednesday — it's another chance to build MORE POWER.
From valvetrain to rotating kits, everything we do is about one thing:
Providing solutions to maximize your LS/LT engine performance.
If you're wrenching tonight, planning your next upgrade, or just dreaming horsepower...
👉More Power Starts Here.

08/18/2025

LSXceleration 212/218 522/529 112+4

07/01/2025

Got some of that good oil to run in the bone stock daily from my guys over at LSXceleration sure glad I started using them for my ls needs haven't looked back since

03/31/2025

Stage 1 hpop on this 7.3 last night with some steel braided lines from cnc fabrication

11/17/2024

Dodge ram heater core replacement

10/17/2024

Teach them while they're young

10/15/2024

Free shipping + Extra 5%Off Code: GSTP

09/08/2024

09/06/2024

WAFFLE WAFFLE WAFFLE
Igloo IMX White 70 qt Cooler
Cash App - $bradlea48
Send as friends & no notes
15 spots @ 25 each
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5 Smiths Land Management LLC
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7 Loyd Bromley
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09/06/2024

LBZ duramax driver side engine mount change out

09/06/2024

stage 2 turbo cam with some good ol arp head bolts both from my guys over at LSXceleration

08/17/2024

These new plug wires sure do look good, nice quality to, definitely gotta support my local performance parts house, go get y'all a pair they have different colors also