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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
Yesterday at 5:32 PM
L31MaxExpress
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
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635
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7.9K
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635
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7.9K
Z
Intake swap
Yesterday at 9:24 AM
zach_rabey
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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A
Iso long tube headers
Yesterday at 7:44 PM
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Let's get connected!!!
Scooterwrench
Oct 1, 2023
4
5
6
Replies
59
Views
6K
Apr 1, 2024
Scooterwrench
Sticky
GMT400 - Community Scan Tool
studigggs
Jan 9, 2023
30
31
32
Replies
316
Views
33K
Sunday at 9:24 PM
Caman96
Sticky
TBI small block intake gasket replacement (PIC HEAVY)
someotherguy
Dec 25, 2022
3
4
5
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41
Views
13K
Feb 16, 2024
95OBSMan
Sticky
How to Put a Vortec Motor in a TBI Truck
Erik the Awful
Jun 17, 2020
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12
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113
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74K
Mar 26, 2024
rebelyell
R
Sticky
88-98 Service Manuals
hatzie
Dec 15, 2018
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15
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144
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245K
Apr 20, 2024
BeautyandtheBeast
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Sticky
The Ultimate 88-98 Performance Toolbox
Devs93
Aug 1, 2012
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3
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35
Views
250K
Mar 12, 2023
jpcedotal
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Sticky
ULTIMATE TBI mods stage 1
shelbyt.67
Jun 28, 2012
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28
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273
Views
329K
May 5, 2022
PlayingWithTBI
Sticky
How to MarkVIII your OBS on a budget..!
monstar_est87
Apr 30, 2012
16
17
18
Replies
171
Views
145K
Sep 23, 2023
Casey916
Sticky
Engine Oil Cooler Upgrade: Add 2 quarts! (SAS guys you'll want to see this)
88GMCtruck
Apr 14, 2010
2
3
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28
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73K
Dec 27, 2023
pgutier1
Sticky
GMT400 History
Greg
Mar 16, 2010
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25
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245
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328K
Feb 27, 2023
Will Fuller
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Tune Up Parts Numbers
supjim12
Dec 22, 2009
2
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4
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37
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66K
May 15, 2022
Erik the Awful
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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160K
Jun 20, 2023
Illbedipped
Sticky
Maintenance: RPO Code Database & Decoder
Greg
Dec 4, 2009
2
3
4
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33
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50K
Jul 3, 2023
GoToGuy
Sticky
Water Pump Relacement
Ginger
Dec 4, 2009
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9
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86
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85K
Jun 7, 2021
HotWheelsBurban
Sticky
Intake Gasket Replacement
Ginger
Dec 4, 2009
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124
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120K
Dec 9, 2022
mary7654
M
Sticky
Putting A Chip In A TBI Truck
Bighead38
Dec 3, 2009
19
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202
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296K
Jul 10, 2023
mwilliams55555
Sticky
The Stupid Engine Questions Thread
Mike
Dec 3, 2009
207
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209
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2K
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371K
Apr 28, 2024
FighterOfTheFoo
S
How different is the 1994/5 TBI 454 from the older models?
Sam454
Today at 12:09 AM
Replies
0
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57
Today at 12:09 AM
Sam454
S
Alternators
95OBSMan
Yesterday at 10:12 PM
Replies
7
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128
Yesterday at 11:45 PM
1998_K1500_Sub
L
Stock exhaust manifold bolts kit
LarryZ
Yesterday at 2:38 PM
Replies
1
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73
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Schurkey
M
Help with relocation
[email protected]
Yesterday at 12:16 PM
Replies
6
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138
Yesterday at 3:02 PM
[email protected]
M
L
Surging idle and stalling after new ignition module
lmg866
Yesterday at 2:12 AM
Replies
0
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76
Yesterday at 2:12 AM
lmg866
L
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97 5.0 no fuel pressure,new pump&filter
rar421
Sunday at 10:25 PM
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54
Sunday at 10:25 PM
rar421
R
I’m a DA…what maintenance have you screwed up?
Reega
Sunday at 9:25 PM
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41
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1K
Yesterday at 9:13 PM
PlayingWithTBI
V
Cruise control fuse location
vallesfj
Sunday at 8:29 PM
Replies
2
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126
Yesterday at 1:28 AM
vallesfj
V
S
Diesel sound when blipping throttle
scott2093
Sunday at 4:24 PM
Replies
3
Views
97
Yesterday at 7:12 PM
scott2093
S
T
Not starting after doing a De-Carb on engine
TheKOOK
Sunday at 3:54 PM
Replies
8
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182
Sunday at 9:16 PM
Scooterwrench
J
89 Chevy K2500 with a 74 Chevy 350 engine
jealousy2500hd
Sunday at 2:46 PM
Replies
3
Views
119
Sunday at 6:51 PM
Nad_Yvalhosert
N
E
Truck jerking
El profe
Sunday at 1:17 PM
Replies
2
Views
82
Sunday at 1:30 PM
El profe
E
Bipolar Misfire on 1997 Vortec 5.0
shaneroze
Sunday at 11:45 AM
Replies
2
Views
100
Yesterday at 7:24 PM
Schurkey
G
O2 sensor -93 Suburban
GA93Burban
Sunday at 10:42 AM
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0
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50
Sunday at 10:42 AM
GA93Burban
G
2000 C3500 7.4L PASSLOCK Nightmare
BeautyandtheBeast
Saturday at 7:52 PM
Replies
3
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139
Saturday at 9:11 PM
HotWheelsBurban
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