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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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99 L29 454 build
Friday at 10:54 PM
Scottm
LSX + Carb Swaps
This section is for info on LSX or carburetor swaps into the OBS trucks.
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How To: Ditch EFI and keep TBI PCM for 4L60E Control.
Yesterday at 6:24 PM
L31MaxExpress
Exhaust
Anything exhaust - from headers cats and pipes to tips.
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Long tube headers
Friday at 12:14 PM
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454 tbi to vortec mpfi intake swap
vogey
Sep 27, 2017
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9K
Sep 27, 2017
Christian Steffen
Intermittent high idle
GMC1994K1500SierraSL
Jul 12, 2017
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7K
Sep 27, 2017
DerekTheGreat
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Planning on doing the mpfi spider upgrade
Jiggie
Sep 26, 2017
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472
Sep 26, 2017
Jiggie
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Recommendation on stall convertor
WalkeJ1
Sep 20, 2017
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Sep 26, 2017
chrmaka
HELP ME PLEASE
ChevyBoat
Jul 21, 2015
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Sep 25, 2017
DerekTheGreat
Got 800 to GMT400 Electric fan conversion
inscarguy
Sep 23, 2017
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Sep 24, 2017
BIG_KID
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Ac swap troubles.
SilvyLightning
Sep 21, 2017
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Sep 24, 2017
chipskittles
C
4
Oil Fill Hole
4L80
Dec 16, 2016
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Sep 23, 2017
4L80
4
A few problems
JB415
Aug 16, 2017
2
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2K
Sep 22, 2017
eyesi
E
R
No start, fuel issue
rigsboo
Sep 14, 2017
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3K
Sep 22, 2017
eyesi
E
Still have random fuel related no-start issue
RichLo
Sep 15, 2017
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Sep 22, 2017
eyesi
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Needing more fuel
1bigwilliestyle
Sep 21, 2017
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Sep 21, 2017
1bigwilliestyle
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Timing chain
winford hackworth
Sep 14, 2017
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c1500deathtrap
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Po300
Greg Mck
May 30, 2017
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Sep 21, 2017
GarrettGmc
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1991 6.2 diesel- need diagram/pic on how to mount PS pump
mike73
Sep 19, 2017
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594
Sep 20, 2017
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