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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
Today at 12:40 AM
L31MaxExpress
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
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633
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7.9K
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633
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7.9K
5.3 + manual swap
Yesterday at 5:11 PM
0xDEADBEEF
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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BBK Exhaust Header
Saturday at 8:33 PM
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Sticky
The Stupid Engine Questions Thread
Mike
Dec 3, 2009
207
208
209
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2K
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369K
Yesterday at 4:14 PM
FighterOfTheFoo
Sticky
GMT400 - Community Scan Tool
studigggs
Jan 9, 2023
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312
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32K
Apr 22, 2024
Blue Max
B
Sticky
88-98 Service Manuals
hatzie
Dec 15, 2018
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15
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144
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Apr 20, 2024
BeautyandtheBeast
Sticky
Let's get connected!!!
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Oct 1, 2023
4
5
6
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59
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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
Views
74K
Mar 26, 2024
rebelyell
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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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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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18
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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
19
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21
Replies
202
Views
295K
Jul 10, 2023
mwilliams55555
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Maintenance: RPO Code Database & Decoder
Greg
Dec 4, 2009
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4
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33
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49K
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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249K
Mar 12, 2023
jpcedotal
Sticky
GMT400 History
Greg
Mar 16, 2010
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245
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327K
Feb 27, 2023
Will Fuller
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Intake Gasket Replacement
Ginger
Dec 4, 2009
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124
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120K
Dec 9, 2022
mary7654
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Sticky
Tune Up Parts Numbers
supjim12
Dec 22, 2009
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37
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65K
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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328K
May 5, 2022
PlayingWithTBI
Sticky
Water Pump Relacement
Ginger
Dec 4, 2009
7
8
9
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86
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84K
Jun 7, 2021
HotWheelsBurban
S
1993 5.7 TBI injectors spray intermittently at start up
Stu925
Yesterday at 4:33 PM
Replies
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91
27 minutes ago
Stu925
S
Motor and Transmission Mounts
Caman96
Feb 24, 2024
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453
Today at 2:09 AM
Vikingdude
Collapsed Lifters 95 GenV Big Block
grampadirt
Mar 14, 2024
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3
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29
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1K
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grampadirt
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Building a stroker motor
Moofus02
Yesterday at 12:45 PM
2
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14
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314
Today at 12:36 AM
99xcss4
4
7.4 swap c1500 tight on the passenger side
454C1500
Saturday at 1:43 PM
Replies
9
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225
Today at 12:17 AM
Schurkey
M
What is a good o2 crosscount number for a 1994 350 tbi
man-a-fre
Yesterday at 9:07 AM
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64
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Schurkey
I need mental help!!! What should I do?
Maddmatt
Tuesday at 9:28 PM
2
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15
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536
Today at 12:08 AM
Scooterwrench
N
Wiring A/C to work without PCM 98 7.4L K3500
nws649
Sep 27, 2022
2
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12
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4K
Today at 12:05 AM
Jgze99
J
89 k1500 gets warm only on the highway
Nopainnogain445
Yesterday at 12:03 PM
Replies
9
Views
150
Yesterday at 11:53 PM
618 Syndicate
383 Build
BigIron002
Yesterday at 7:07 PM
Replies
4
Views
115
Yesterday at 11:44 PM
Schurkey
C
Holley tbi
CRider
Yesterday at 2:28 PM
Replies
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162
Yesterday at 11:31 PM
Schurkey
Can’t seem to get all air out of rad
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Jun 19, 2023
2
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11
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Yesterday at 11:10 PM
Hipster
A
Cap & Rotor
alpinecrick
Jul 17, 2023
2
3
4
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39
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4K
Yesterday at 9:46 PM
Schurkey
B
350 stroker build (ca smog legal?)
braidenserpa
Feb 20, 2024
2
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36
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3K
Yesterday at 5:19 PM
RacerM95
R
Steering Pump Bleed Procedure?
Ruff Idol
Jan 9, 2023
2
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14
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9K
Yesterday at 5:12 PM
SuperSpore
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1993 5.7 TBI injectors spray intermittently at start up
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