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Engine Performance + Maintenance
If it's under the hood, its in here.
96+ Vortec Performance + Computer Swaps
If you want to do the 0411 PCM swap or have a 1996+ Vortec motor this is your forum!
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99 L29 454 build
33 minutes ago
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LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
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How To: Ditch EFI and keep TBI PCM for 4L60E Control.
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Long tube headers
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EKOBS
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Best way to add power to my 98 gmc sierra k1500 with 4.3 vortec
slatter66
Apr 23, 2024
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Schurkey
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Service Manual Needed! Recommendations!
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1996 K2500 Sub L29 454 Hesitation off idle
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Vortec intake manifold pitting
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Best Intake gaskets
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What torque converter should I pick
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O2 Sensor? 1989 C2500 5.7
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HELP
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Does anyone know what this is???
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1997 k1500 ext cab
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TBI to Terminator
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Odd question
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Apr 16, 2024
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