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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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L31 Extreme Budget Build
38 minutes ago
L31MaxExpress
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
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631
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7.9K
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631
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6.0 turbo build advice
22 minutes ago
Thenameless
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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13.8K
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1998 k1500 5.7L exhaust flange leak broken center stud
Yesterday at 1:15 PM
movietvet
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Water Pump Relacement
Ginger
Dec 4, 2009
7
8
9
Replies
86
Views
84K
Jun 7, 2021
HotWheelsBurban
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ULTIMATE TBI mods stage 1
shelbyt.67
Jun 28, 2012
26
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28
Replies
273
Views
327K
May 5, 2022
PlayingWithTBI
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Sticky
Tune Up Parts Numbers
supjim12
Dec 22, 2009
2
3
4
Replies
37
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65K
May 15, 2022
Erik the Awful
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Sticky
The Ultimate 88-98 Performance Toolbox
Devs93
Aug 1, 2012
2
3
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35
Views
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Mar 12, 2023
jpcedotal
Sticky
The Stupid Engine Questions Thread
Mike
Dec 3, 2009
207
208
209
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2K
Views
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Friday at 9:48 PM
Orpedcrow
Sticky
TBI small block intake gasket replacement (PIC HEAVY)
someotherguy
Dec 25, 2022
3
4
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Views
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Feb 16, 2024
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Sticky
Putting A Chip In A TBI Truck
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Dec 3, 2009
19
20
21
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202
Views
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Jul 10, 2023
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Sticky
Maintenance: RPO Code Database & Decoder
Greg
Dec 4, 2009
2
3
4
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33
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49K
Jul 3, 2023
GoToGuy
Sticky
Let's get connected!!!
Scooterwrench
Oct 1, 2023
4
5
6
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59
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6K
Apr 1, 2024
Scooterwrench
Sticky
Intake Gasket Replacement
Ginger
Dec 4, 2009
11
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124
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120K
Dec 9, 2022
mary7654
M
Sticky
How to Replace oil filter adapter gasket & o-ring
Hodges87
Dec 14, 2009
4
5
6
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55
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159K
Jun 20, 2023
Illbedipped
Sticky
How to Put a Vortec Motor in a TBI Truck
Erik the Awful
Jun 17, 2020
10
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113
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73K
Mar 26, 2024
rebelyell
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How to MarkVIII your OBS on a budget..!
monstar_est87
Apr 30, 2012
16
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171
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145K
Sep 23, 2023
Casey916
Sticky
GMT400 History
Greg
Mar 16, 2010
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245
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326K
Feb 27, 2023
Will Fuller
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GMT400 - Community Scan Tool
studigggs
Jan 9, 2023
30
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311
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31K
Mar 30, 2024
Bob2650
B
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Engine Oil Cooler Upgrade: Add 2 quarts! (SAS guys you'll want to see this)
88GMCtruck
Apr 14, 2010
2
3
Replies
28
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73K
Dec 27, 2023
pgutier1
Sticky
88-98 Service Manuals
hatzie
Dec 15, 2018
13
14
15
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142
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238K
Tuesday at 8:52 PM
hatzie
“Police Issue” Vortec Heads?
NightRunner
May 13, 2018
2
Replies
15
Views
4K
May 19, 2018
NightRunner
“Lag”?
tooturntdad
Oct 29, 2021
2
3
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24
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3K
Dec 13, 2021
stutaeng
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“Duramax fan”
Slade88
Sep 16, 2022
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25
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10K
Nov 16, 2023
Orpedcrow
A
‘99 on the road finally, now rattles in first
Aholter90
Sep 9, 2022
Replies
7
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940
Sep 19, 2022
HotWheelsBurban
A
‘99 K2500 died and won’t restart
Aholter90
Jan 27, 2023
2
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13
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3K
Mar 3, 2024
Road Trip
‘97 built 5.7 w 411 swap to tuner & dyno concerns
97SWBCHEVY
Sep 18, 2023
Replies
1
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731
Sep 18, 2023
L31MaxExpress
‘97 5.7 Vortec - ̶n̶o̶t̶ your typical crank no start
wyn97
Oct 31, 2021
2
3
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29
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28K
Nov 2, 2021
wyn97
‘97 5.7 automatic backfire go BOOM!
97SWBCHEVY
Sep 22, 2021
2
Replies
12
Views
2K
Sep 24, 2021
Pinger
‘97 5.7 Auto Dress Up
97SWBCHEVY
May 11, 2022
Replies
6
Views
2K
May 17, 2022
L31MaxExpress
‘95 K1500 air conditioning system Q.
any4xx
Mar 13, 2023
Replies
4
Views
1K
May 15, 2023
Dariusz Salomon
‘95 5.7 runs poorly when warm. I’m reducing myself to being a parts-changer.
any4xx
Mar 31, 2023
2
3
4
Replies
32
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5K
Apr 16, 2023
any4xx
‘94 Silverado A/C INOP ?
highwaystar
Apr 15, 2021
Replies
2
Views
460
Apr 15, 2021
Schurkey
T
‘94 350 TBI milky oil
Todd Savage
Dec 30, 2017
2
Replies
11
Views
7K
Jan 1, 2018
Todd Savage
T
J
‘93 4.3 oil adapter leak
Jfavorito
Jan 25, 2020
Replies
7
Views
869
Jan 26, 2020
L31MaxExpress
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‘92 5.7 tbi stalls after tach goes crazy
Ninety-two
Jun 13, 2023
2
3
Replies
22
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3K
Jun 23, 2023
Ninety-two
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