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!
Threads
1K
Messages
13.5K
Threads
1K
Messages
13.5K
HotWheelsBurban
99 L31 Burb won't start

LSX + Carb Swaps

This section is for info on LSX or carburetor swaps into the OBS trucks.
Threads
517
Messages
6.3K
Threads
517
Messages
6.3K
0xDEADBEEF
94 K2500 - Swapped 6.5T Diesel to 5.3 LS - Making factory tachometer work! Easy!

Exhaust

Anything exhaust - from headers cats and pipes to tips.
Threads
993
Messages
11.9K
Threads
993
Messages
11.9K
ralmo94
Oxygen sensors
Mike
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The Stupid Engine Questions Thread
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Views
295K
1997
1997
Erik the Awful
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How to Put a Vortec Motor in a TBI Truck
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55
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GreaseDog
hatzie
  • Sticky
88-98 Service Manuals
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89
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454cid
454cid
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  • Sticky
GMT400 History
22 23 24
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237
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287K
Jeepwalker
Jeepwalker
S
  • Sticky
Tune Up Parts Numbers
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37
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59K
Erik the Awful
Erik the Awful
S
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ULTIMATE TBI mods stage 1
26 27 28
Replies
273
Views
297K
PlayingWithTBI
PlayingWithTBI
Hodges87
  • Sticky
How to Replace oil filter adapter gasket & o-ring
4 5 6
Replies
54
Views
146K
Schurkey
Schurkey
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  • Sticky
Water Pump Relacement
7 8 9
Replies
86
Views
75K
HotWheelsBurban
HotWheelsBurban
88GMCtruck
  • Sticky
Engine Oil Cooler Upgrade: Add 2 quarts! (SAS guys you'll want to see this)
2 3
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25
Views
67K
Cisco
Cisco
Ginger
  • Sticky
Intake Gasket Replacement
11 12 13
Replies
123
Views
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Pinger
Pinger
D
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The Ultimate 88-98 Performance Toolbox
2 3 4
Replies
33
Views
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bhopthewelder
B
monstar_est87
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How to MarkVIII your OBS on a budget..!
15 16 17
Replies
169
Views
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duallburb
duallburb
Bighead38
  • Sticky
Putting A Chip In A TBI Truck
18 19 20
Replies
199
Views
257K
PlayingWithTBI
PlayingWithTBI
Greg
  • Sticky
Maintenance: RPO Code Database & Decoder
2 3
Replies
23
Views
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dAT OBS
dAT OBS
df2x4
Conventional 5W-30 No Longer Available?
3 4 5
Replies
48
Views
1K
AuroraGirl
AuroraGirl
Hoplite
11 blade Fan Swap on TBI350
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0
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36
Hoplite
Hoplite
1990C1500
30 year old open recall
2
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13
Views
359
Hoplite
Hoplite
9
Oil Pump Choice for 5.7 Vortec
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4
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85
97Burban57
9
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Pin out
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0
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19
Rojo
Rojo
9
Rev limiter
2 3
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29
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378
sewlow
sewlow
9
Lifter Choice
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5
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92
97Burban57
9
B
95 K2500 stumbles/sometimes dies under load
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9
Views
168
Brandon_Lutz
B
SUBURBAN5
Cant get up to 45mph
2
Replies
15
Views
305
SUBURBAN5
SUBURBAN5
Shannon400
To the insane asylum i go!
Replies
4
Views
158
Schurkey
Schurkey
jus10inbrla
Possible ABS locked up?
2 3
Replies
22
Views
361
SUBURBAN5
SUBURBAN5
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4bt swap 4l80e conversion
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0
Views
47
Dr1rrrr
D
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Oil Pan Gasket and Timing Set
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24
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489
L31MaxExpress
L31MaxExpress
Sle-z_90
Running terribly
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Replies
31
Views
815
Sle-z_90
Sle-z_90
D
4.3L to ?? swap.
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Views
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DeCaff2007
D
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