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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1K
Messages
12.7K
Threads
1K
Messages
12.7K
someotherguy
98 K2500 Suburban won't stay running.

LSX + Carb Swaps

This section is for info on LSX or carburetor swaps into the OBS trucks.
Threads
490
Messages
6K
Threads
490
Messages
6K
TrillWill
Wiring Help!!

Exhaust

Anything exhaust - from headers cats and pipes to tips.
Threads
978
Messages
11.6K
Threads
978
Messages
11.6K
Jimmy D
Exhaust System Done!
S
  • Sticky
Tune Up Parts Numbers
2 3 4
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37
Views
57K
Erik the Awful
Erik the Awful
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ULTIMATE TBI mods stage 1
26 27 28
Replies
273
Views
288K
PlayingWithTBI
PlayingWithTBI
Mike
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The Stupid Engine Questions Thread
182 183 184
Replies
2K
Views
279K
1997
1997
hatzie
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88-98 Service Manuals
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79
Views
98K
PM18S4
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Erik the Awful
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How to Put a Vortec Motor in a TBI Truck
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51
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Erik the Awful
Erik the Awful
Greg
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GMT400 History
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Replies
235
Views
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mars2878
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Hodges87
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How to Replace oil filter adapter gasket & o-ring
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54
Views
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Schurkey
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Water Pump Relacement
7 8 9
Replies
86
Views
73K
HotWheelsBurban
HotWheelsBurban
88GMCtruck
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Engine Oil Cooler Upgrade: Add 2 quarts! (SAS guys you'll want to see this)
2 3
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25
Views
66K
Cisco
Cisco
Ginger
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Intake Gasket Replacement
11 12 13
Replies
123
Views
100K
Pinger
Pinger
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The Ultimate 88-98 Performance Toolbox
2 3 4
Replies
33
Views
211K
bhopthewelder
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monstar_est87
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How to MarkVIII your OBS on a budget..!
15 16 17
Replies
169
Views
133K
duallburb
duallburb
Bighead38
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Putting A Chip In A TBI Truck
18 19 20
Replies
199
Views
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PlayingWithTBI
PlayingWithTBI
Greg
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Maintenance: RPO Code Database & Decoder
2 3
Replies
23
Views
40K
dAT OBS
dAT OBS
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How does one remove the electric AIR system in a 1998 Tahoe?
2 3
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21
Views
745
Andrews98
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98 Nitro
Alternators
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9
Views
188
Kran
K
97SWBCHEVY
‘97 5.7 Auto Dress Up
Replies
6
Views
375
L31MaxExpress
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What to prepare for before I rip into engine....
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Replies
27
Views
730
Pinger
Pinger
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Holley efi and speedometer
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0
Views
47
Wgrainy
W
I
Valve spring upgrade on 810 heads?
Replies
2
Views
90
International47
I
J
AC hose help for 88 GMC 1500
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6
Views
184
Schurkey
Schurkey
SuperSpore
Upgraded Fuel Pump for 1990 SCSB 5.7
Replies
8
Views
198
SuperSpore
SuperSpore
A
98 C1500 Vacuum Hose
Replies
5
Views
678
carnerd3000
C
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What tune up parts do you use on your tbi engine?
2
Replies
13
Views
735
TreeGeared
TreeGeared
Amsterdamned96
Street-able NA 454 7.4L build
2
Replies
11
Views
383
Frank Enstein
Frank Enstein
C
New Oil Leak at Radiator
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10
Views
227
Schurkey
Schurkey
ingrammc
One Backfire then Stumble and surge issues
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7
Views
226
ingrammc
ingrammc
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Engine Wiring Harnesses Randomly Popping Loose?
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Replies
21
Views
590
udidwht
U
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99 completely stock 454 upgrades
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20
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742
thebigcar
thebigcar
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