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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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S
Another 454 Vortec Build Thread - Documenting, Q&A, Help
28 minutes ago
Supercharged111
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
Threads
634
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7.9K
How To: Ditch EFI and keep TBI PCM for 4L60E Control.
Yesterday at 6:24 PM
L31MaxExpress
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
Ironroad9C1
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GMT400 - Community Scan Tool
studigggs
Jan 9, 2023
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314
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33K
Wednesday at 11:07 AM
Bob2650
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Sticky
The Stupid Engine Questions Thread
Mike
Dec 3, 2009
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2K
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370K
Apr 28, 2024
FighterOfTheFoo
Sticky
88-98 Service Manuals
hatzie
Dec 15, 2018
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144
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244K
Apr 20, 2024
BeautyandtheBeast
Sticky
Let's get connected!!!
Scooterwrench
Oct 1, 2023
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59
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6K
Apr 1, 2024
Scooterwrench
Sticky
How to Put a Vortec Motor in a TBI Truck
Erik the Awful
Jun 17, 2020
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113
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74K
Mar 26, 2024
rebelyell
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Sticky
TBI small block intake gasket replacement (PIC HEAVY)
someotherguy
Dec 25, 2022
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41
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13K
Feb 16, 2024
95OBSMan
Sticky
Engine Oil Cooler Upgrade: Add 2 quarts! (SAS guys you'll want to see this)
88GMCtruck
Apr 14, 2010
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3
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28
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73K
Dec 27, 2023
pgutier1
Sticky
How to MarkVIII your OBS on a budget..!
monstar_est87
Apr 30, 2012
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171
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145K
Sep 23, 2023
Casey916
Sticky
Putting A Chip In A TBI Truck
Bighead38
Dec 3, 2009
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202
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296K
Jul 10, 2023
mwilliams55555
Sticky
Maintenance: RPO Code Database & Decoder
Greg
Dec 4, 2009
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33
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50K
Jul 3, 2023
GoToGuy
Sticky
How to Replace oil filter adapter gasket & o-ring
Hodges87
Dec 14, 2009
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55
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159K
Jun 20, 2023
Illbedipped
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Sticky
The Ultimate 88-98 Performance Toolbox
Devs93
Aug 1, 2012
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35
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250K
Mar 12, 2023
jpcedotal
Sticky
GMT400 History
Greg
Mar 16, 2010
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245
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328K
Feb 27, 2023
Will Fuller
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Intake Gasket Replacement
Ginger
Dec 4, 2009
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120K
Dec 9, 2022
mary7654
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Tune Up Parts Numbers
supjim12
Dec 22, 2009
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66K
May 15, 2022
Erik the Awful
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ULTIMATE TBI mods stage 1
shelbyt.67
Jun 28, 2012
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273
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329K
May 5, 2022
PlayingWithTBI
Sticky
Water Pump Relacement
Ginger
Dec 4, 2009
7
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86
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85K
Jun 7, 2021
HotWheelsBurban
K
Truck not turning over
Kevin99
Thursday at 7:39 AM
2
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19
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404
29 minutes ago
HotWheelsBurban
1999 L31 Engine with nearly 260k, Timing chain plus what else?
redfishsc
Mar 22, 2024
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689
Today at 8:56 AM
Danimal08
Collapsed Lifters 95 GenV Big Block
grampadirt
Mar 14, 2024
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39
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Today at 8:52 AM
grampadirt
93 5.7 cat delete o2 sensor light
ol-Betsy
Apr 17, 2024
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Today at 8:32 AM
scott2093
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R4 Scroll Compressor Experience
studigggs
Aug 22, 2019
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27
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18K
Today at 7:42 AM
Ironroad9C1
Bad running after manual swap
JPVortex
Apr 17, 2024
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167
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4K
Today at 7:24 AM
1998_K1500_Sub
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94 454 quick disconnect coolant fitting woes
muddy94chevy
Yesterday at 12:11 PM
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83
Today at 3:20 AM
Schurkey
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Hard start when warm 94 5.7l 3500 5speed just installed motor
The squidward
Yesterday at 7:44 PM
Replies
1
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63
Today at 3:09 AM
Schurkey
M
1994 k1500 wild misfire
Murderedgtp
Apr 15, 2024
2
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10
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257
Today at 12:57 AM
Schurkey
A
Fuel tank strap issues
alreadyded
Apr 27, 2024
2
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12
Views
334
Yesterday at 11:11 PM
alreadyded
A
2000 C3500 7.4L PASSLOCK Nightmare
BeautyandtheBeast
Yesterday at 7:52 PM
Replies
3
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118
Yesterday at 9:11 PM
HotWheelsBurban
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Had intake leak and now what
carcanken
Apr 22, 2024
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3
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24
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895
Yesterday at 4:26 PM
carcanken
C
B
350 stroker build (ca smog legal?)
braidenserpa
Feb 20, 2024
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39
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3K
Yesterday at 3:40 PM
Supercharged111
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7.4 EGR bypassed
JimRMac
Friday at 11:06 AM
Replies
7
Views
186
Yesterday at 12:08 PM
Keeper
S
1988 chevy k2500 idles perfect in park and Neutral but dies in gear.
scornedlotus
Friday at 12:13 AM
Replies
6
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210
Yesterday at 11:21 AM
scornedlotus
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Bed tie downs
Latest: Aaron Poston
6 minutes ago
Paint / Body / Detailing
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Another 454 Vortec Build Thread - Documenting, Q&A, Help
Latest: Supercharged111
28 minutes ago
96+ Vortec Performance + Computer Swaps
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Engine Performance + Maintenance
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