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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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1.2K
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12200411 PCM swap for 1996 to 2000 GMT400 trucks
Today at 12:54 AM
Awest623
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
Threads
647
Messages
8K
Threads
647
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8K
S
Favorite Shop for EV6 Injector Refresh?
Yesterday at 5:57 PM
Supercharged111
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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13.9K
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1.1K
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13.9K
1997 C1500 5.7 Exhuast manifold 3 bolt flange help
Monday at 9:28 PM
Schurkey
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7.4/454 wont start
bulldog
Nov 1, 2018
Replies
7
Views
648
Nov 2, 2018
454cid
S
Just acquired a '95 with the 4.3, year specific issues?
supermailman
Oct 23, 2018
2
Replies
10
Views
1K
Nov 1, 2018
L31MaxExpress
2000 C3500 Possible Powertrain Grinding Noise
NotARealK2500
Nov 1, 2018
Replies
0
Views
588
Nov 1, 2018
NotARealK2500
88 truck, runs great with the map unplugged
lickmyburger89
Oct 8, 2018
2
3
Replies
22
Views
5K
Oct 31, 2018
Schurkey
Fouling spark plugs
89sportside
Apr 22, 2017
2
3
Replies
20
Views
9K
Oct 31, 2018
c1500deathtrap
C
5.7 Vortec to 5.0 Vortec
Manimal
Oct 22, 2018
Replies
5
Views
732
Oct 30, 2018
Chuck_13
P0440 Code, out of ideas
Mitch564
Oct 23, 2018
Replies
4
Views
7K
Oct 30, 2018
94burbk1500
C
350 TBI starting issues....
Christian Sullivan
Mar 15, 2018
2
Replies
15
Views
15K
Oct 29, 2018
MRAJB
M
A
LQ4 Swap - Clutch Fan Option
akarichard
Oct 28, 2018
Replies
0
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2K
Oct 28, 2018
akarichard
A
T
Whipple Supercharger 1998 Silverado
Trever
Oct 26, 2018
Replies
4
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6K
Oct 26, 2018
Supercharged111
S
High Beams don't work on 94 Silverado
Ben Spong
Oct 24, 2018
Replies
7
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9K
Oct 25, 2018
Ben Spong
J
Intake Manifold HELP
Jdge439
Oct 21, 2018
2
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13
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7K
Oct 23, 2018
Kran
K
4.3L V6 intact manifold upgrade
Kobo_Dyger
Oct 22, 2018
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5
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9K
Oct 23, 2018
Kobo_Dyger
N
98 5.7 L31 to early 5.3 swap Any help appreciated
Nathanb1488
Oct 22, 2018
Replies
3
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1K
Oct 22, 2018
Supercharged111
S
8
95 th I chip?
884x4310ci
Oct 21, 2018
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8
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3K
Oct 22, 2018
884x4310ci
8
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