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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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M
12200411 PCM swap for 1996 to 2000 GMT400 trucks
Today at 1:00 AM
Motorsports-X
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
Threads
647
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8K
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647
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8K
Tbi 350 swap to zz4 350
Yesterday at 8:48 AM
Erik the Awful
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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1.1K
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13.9K
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1.1K
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1997 C1500 5.7 Exhuast manifold 3 bolt flange help
Monday at 9:28 PM
Schurkey
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The Stupid Engine Questions Thread
Mike
Dec 3, 2009
208
209
210
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2K
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376K
Yesterday at 11:25 PM
MMcc
Sticky
GMT400 - Community Scan Tool
studigggs
Jan 9, 2023
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322
Views
35K
Friday at 6:01 PM
Bob2650
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Sticky
How to Put a Vortec Motor in a TBI Truck
Erik the Awful
Jun 17, 2020
10
11
12
Replies
117
Views
77K
May 21, 2024
Majoraslayer
D
Sticky
The Ultimate 88-98 Performance Toolbox
Devs93
Aug 1, 2012
2
3
4
Replies
36
Views
252K
May 17, 2024
poncho98
Sticky
Engine Oil Cooler Upgrade: Add 2 quarts! (SAS guys you'll want to see this)
88GMCtruck
Apr 14, 2010
2
3
Replies
29
Views
74K
May 17, 2024
poncho98
Sticky
Putting A Chip In A TBI Truck
Bighead38
Dec 3, 2009
19
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21
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205
Views
298K
May 17, 2024
Tomcat71
Sticky
88-98 Service Manuals
hatzie
Dec 15, 2018
13
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15
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148
Views
253K
May 15, 2024
MurderYurFace
Sticky
Water Pump Relacement
Ginger
Dec 4, 2009
7
8
9
Replies
87
Views
85K
May 13, 2024
Utah York
Sticky
Let's get connected!!!
Scooterwrench
Oct 1, 2023
4
5
6
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59
Views
7K
Apr 1, 2024
Scooterwrench
Sticky
TBI small block intake gasket replacement (PIC HEAVY)
someotherguy
Dec 25, 2022
3
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5
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41
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14K
Feb 16, 2024
95OBSMan
Sticky
How to MarkVIII your OBS on a budget..!
monstar_est87
Apr 30, 2012
16
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18
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171
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146K
Sep 23, 2023
Casey916
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
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
GMT400 History
Greg
Mar 16, 2010
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245
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329K
Feb 27, 2023
Will Fuller
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Sticky
Intake Gasket Replacement
Ginger
Dec 4, 2009
11
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124
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121K
Dec 9, 2022
mary7654
M
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Sticky
Tune Up Parts Numbers
supjim12
Dec 22, 2009
2
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37
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66K
May 15, 2022
Erik the Awful
S
Sticky
ULTIMATE TBI mods stage 1
shelbyt.67
Jun 28, 2012
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273
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330K
May 5, 2022
PlayingWithTBI
L
Puff of smoke on start up
Laxplayer7
Yesterday at 11:46 PM
Replies
3
Views
51
53 minutes ago
movietvet
Barely Running Believe its a CMP issue.
1952Chevy
Sunday at 7:37 PM
2
3
Replies
25
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610
Today at 1:29 AM
Road Trip
Cylinder 1 and 5 misfire
Cherryred98
Monday at 3:48 PM
Replies
8
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155
Today at 12:49 AM
Schurkey
Is this stuff ok to use on ICM
FullBlowncustoms
Saturday at 7:39 PM
3
4
5
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48
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2K
Today at 12:44 AM
thinger2
Gen V 4.3 (LV3) in a 1993 Cheyenne
shawnmichael
Oct 30, 2017
2
3
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22
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15K
Today at 12:42 AM
Schurkey
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Truck doesn’t wanna stay running
Freaqie
Yesterday at 11:49 PM
Replies
4
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69
Today at 12:39 AM
Schurkey
97 Aftermarket Tachometer
supspt454
Sunday at 7:01 PM
Replies
6
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158
Yesterday at 10:51 PM
smdk2500
S
Wiring issues
MurderYurFace
May 14, 2024
3
4
5
Replies
40
Views
2K
Yesterday at 10:09 PM
MurderYurFace
power steering pump whine issues
kylenautique
Yesterday at 1:30 PM
2
Replies
12
Views
203
Yesterday at 8:00 PM
JeremyNH
J
M
1994 350 tbi k1500 tank vent charcoal cannister question?
man-a-fre
Yesterday at 3:59 PM
Replies
3
Views
94
Yesterday at 6:50 PM
man-a-fre
M
Redneck DoD
mpyusko
May 22, 2024
4
5
6
Replies
56
Views
2K
Yesterday at 6:31 PM
Orpedcrow
Over heating.. I’m stumped!
wavesillusion
Yesterday at 1:39 PM
Replies
5
Views
129
Yesterday at 6:16 PM
GoToGuy
1992 7.4 Oil?
BIGBLOCK92
Sep 18, 2023
8
9
10
Replies
97
Views
7K
Yesterday at 4:36 PM
Scooterwrench
J
Amazon Purchase link to Switch next to high pressure line? Need to buy!
jasolhe
Sunday at 1:45 PM
Replies
9
Views
230
Yesterday at 3:39 PM
jasolhe
J
Misfire Just Off Idle
Samuel Churchill
May 13, 2024
2
Replies
10
Views
508
Yesterday at 2:10 PM
Samuel Churchill
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