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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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19K
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Another 454 Vortec Build Thread - Documenting, Q&A, Help
Today at 11:03 AM
Bachert24
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
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634
Messages
7.9K
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634
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7.9K
T
How To: Ditch EFI and keep TBI PCM for 4L60E Control.
Today at 11:21 AM
tayto
Exhaust
Anything exhaust - from headers cats and pipes to tips.
Threads
1.1K
Messages
13.9K
Threads
1.1K
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13.9K
New Y-pipe and cat for the old girl
Today at 7:46 AM
Tomcat71
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‘91 C1500 with a 5.3, cam position sensor trouble
Girthrockwel
Sep 13, 2021
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0
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696
Sep 13, 2021
Girthrockwel
G
‘88 Sierra engine’s knocking, timings right at 0° no CEL but i have 7 codes on my code reader (images below)
Beetlejuice
Aug 18, 2023
2
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16
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918
Aug 20, 2023
Erik the Awful
J
[Wiring Issue] Ignition Control / Spark Control Module
joef3
Apr 20, 2024
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1
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246
Apr 20, 2024
joef3
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[SOLVED] Stuttering, Jerking, and Misfiring for a 1997 GMC Sierra C100 5.7
MythicalRewards
Sep 15, 2021
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6
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10K
Sep 17, 2021
MythicalRewards
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M
[SOLVED] Need Help with a 1997 GMC C1500 5.7 Crank but no Start
MythicalRewards
Sep 3, 2021
2
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13
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13K
Sep 4, 2021
HotWheelsBurban
C
zz502 in the 95 burb??? Practical?
cabodiver
Aug 16, 2013
Replies
4
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3K
Aug 23, 2013
SCOTTYINWV
9
ZZ5 engine swap in 1992
99CORVETTE
Jun 24, 2014
Replies
2
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1K
Jul 3, 2014
bassplayaz06
B
P
zz4 cam
peyton4x4
Jun 30, 2015
Replies
1
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808
Jul 1, 2015
peyton4x4
P
ZZ383 Fast Burn Heads/Cam/ValveTrain...
Wheeler
Aug 27, 2020
2
3
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22
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6K
May 12, 2021
Frank Enstein
zddp additive
95Escahoe
Jan 9, 2014
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39
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Nov 16, 2017
tcndeb
T
L
z71 acting very strange ? ?
liftedexpectations
Sep 14, 2013
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4
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831
Sep 16, 2013
liftedexpectations
L
S
Z28 springs on Vortec heads
Slade88
Oct 3, 2022
Replies
9
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3K
Feb 12, 2023
Schurkey
8
Z Max engine and fuel
88gmt400
Aug 9, 2014
Replies
8
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1K
Aug 10, 2014
1998K1500
Yukon/Tahoe Performance
honkon
Oct 9, 2018
2
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4
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33
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8K
Nov 3, 2019
honkon
Yukon/Tahoe fuel pump access
VorTecxas
Sep 11, 2013
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2
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36K
Sep 11, 2013
VorTecxas
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