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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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Another 454 Vortec Build Thread - Documenting, Q&A, Help
31 minutes ago
Bachert24
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
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634
Messages
7.9K
Threads
634
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T
How To: Ditch EFI and keep TBI PCM for 4L60E Control.
Today at 2:04 PM
tayto
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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13.9K
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E
Long tube headers
Today at 12:14 PM
EKOBS
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fuel milage
birchhatchery
Jan 25, 2014
2
3
4
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3K
Mar 17, 2014
96-1500
Alt Upgrade
95Escahoe
Mar 16, 2014
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1
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410
Mar 16, 2014
qukon 95
Anyone running an underdrive crank pulley ?
Gatorboy
Dec 17, 2012
2
3
Replies
21
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4K
Mar 16, 2014
Grindtime
G
Stock air filter question. Can I get rid of all the plastic crap?
94burb
Mar 11, 2014
Replies
9
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3K
Mar 15, 2014
1993-Sierra-Z71
EVAP purge valve
///RAGMC
Jun 19, 2013
2
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11
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Mar 15, 2014
DragginGMC
L
Distributor replacement
lftd94z71
Mar 15, 2014
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2K
Mar 15, 2014
IOWNJUNK
Update on all my engine issues
Parentnoia
Aug 16, 2013
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4
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774
Mar 15, 2014
Parentnoia
E
rear fuel lines....
ernjohn
Mar 14, 2014
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0
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2K
Mar 14, 2014
ernjohn
E
TBI owners Check This out!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
slippy3002
Mar 12, 2014
2
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11
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4K
Mar 14, 2014
low4x4
throttlebody spacer
GMC1994K1500SierraSL
Mar 10, 2014
2
3
4
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32
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2K
Mar 14, 2014
95z71performer
T
O2 sensor replacement
Tailgunner762
Mar 14, 2014
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2
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3K
Mar 14, 2014
volunteerff21
Truck ran hot this morning. Opinions please
gmfan454
Mar 14, 2014
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4
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474
Mar 14, 2014
98_k1500
454 and 4l80e for cheap
95z71performer
Mar 9, 2014
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4
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777
Mar 14, 2014
95z71performer
Do I need anything else?
Parentnoia
Mar 1, 2014
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8
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943
Mar 13, 2014
Parentnoia
Strange Issue, Any ideas on what it is?
gmfan454
Mar 13, 2014
Replies
7
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904
Mar 13, 2014
badazzbulldog
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