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thorley headers 03 5.3 sierra california question
fishboy
on Jun 20, 2013
Jun 29, 2013
07:37 PM
by
fishboy
8
1,815
GM Engine & Exhaust Performance
Thorley Tri-Y header Install on NNBS
CDN SS
on Mar 3, 2011
Jun 1, 2013
03:17 PM
by
ForkHorn
7
5,615
GMT 900 Trucks General Discussion
True duals on a 4.8.....
(
1
2
)
TexasSteve
on Apr 30, 2013
May 2, 2013
02:39 AM
by
TexasSteve
13
6,950
GM Engine & Exhaust Performance
Thorley tri-y's on NNBS 4x4?
(
1
2
)
0235SS93
on Apr 22, 2012
Apr 28, 2012
12:05 PM
by
catman22
10
6,177
GM Engine & Exhaust Performance
New here!!!
(
1
2
)
Hotrado
on Apr 23, 2012
Apr 23, 2012
10:52 PM
by
Hotrado
10
2,590
New Members
Do Thorley 310Y-49 headers fit '03 2500HD
kaudev
on Apr 11, 2012
Apr 12, 2012
09:20 AM
by
2500HDKartRacer
2
1,767
GM Engine & Exhaust Performance
Doug thorley tri-y's
(
1
2
3
)
Tkosinski2
on Jan 22, 2012
Apr 9, 2012
03:13 PM
by
lowburb
27
20,276
GM Engine & Exhaust Performance
Bassani Mid Length Header Dyno?
loloone
on Oct 11, 2011
Oct 12, 2011
04:42 PM
by
jiar577
1
2,206
GM Engine & Exhaust Performance
Dyno Results
(
1
2
3
4
)
TIM Z
on Jul 30, 2011
Aug 2, 2011
09:22 PM
by
SILVERADO11
36
6,660
Dynamometer Results & Comparisons
Doug Thorley Tri-Y Headers & aFe Stage 2 CAI
(
1
2
)
Alpinestar
on Mar 10, 2011
Apr 25, 2011
04:22 PM
by
Alpinestar
17
3,990
GM Parts Classifieds
FS Thorley Tri Y Headers 310-Y-49
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1
2
3
)
CDN SS
on Feb 7, 2011
Mar 4, 2011
09:51 AM
by
CDN SS
20
3,462
GM Parts Classifieds
lack of tri y headers
(
1
2
3
4
)
southern_chevy
on Jan 1, 2011
Jan 9, 2011
03:18 PM
by
ShredSled
38
12,451
GM Engine & Exhaust Performance
Towing/daily driver cam vs. Hot rodding/drag race type of cam
(
1
2
3
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HEADHUNTER92
on Oct 22, 2010
Oct 24, 2010
11:49 PM
by
Steve Bryant
25
21,930
INTERNAL ENGINE MODIFICATIONS
Parts for sale!!!
(
1
2
)
Badboy464
on Apr 25, 2010
Jun 9, 2010
10:33 PM
by
Badboy464
15
2,785
GM Parts Classifieds
Thorley's on NNBS 4x4
(
1
2
)
pewterliftedz
on Feb 28, 2010
Mar 3, 2010
11:24 AM
by
jiar577
11
3,388
GM Engine & Exhaust Performance
Brand New Thorley Tri-Y Ceramic coated headers
gdbauer7
on Nov 30, 2009
Dec 2, 2009
05:47 PM
by
supadaddy
7
1,480
GM Parts Classifieds
Doug Thorley's
hawaiianstyle
on Aug 29, 2007
Aug 25, 2009
08:55 AM
by
Gordy M
4
1,549
GM Engine & Exhaust Performance
Doug Thorley Tri-Y Coated Headers THY-310Y-C
DamnYankee
on Jan 8, 2008
Jan 8, 2008
07:27 PM
by
DamnYankee
5
2,580
GM Parts Classifieds
Thorley Tri-Y Headers 96-98 GM Chevy GMC Trucks SUVs
(
1
2
)
350SS
on Oct 29, 2007
Jan 7, 2008
11:29 AM
by
350SS
12
1,941
GM Parts Classifieds
CA Smog questions
(
1
2
3
)
2000LT
on Oct 5, 2007
Oct 11, 2007
12:27 PM
by
mds2004
24
3,377
GM Engine & Exhaust Performance
Lt vs Mid vs Tri-Y headers.....
Stampede4ever
on Jun 3, 2007
Jun 9, 2007
09:15 PM
by
99Silver6.0
3
800
GM Engine & Exhaust Performance
Tri-Y Headers from Get Bent Fabrication?
(
1
2
)
truckmann
on Mar 26, 2007
Apr 23, 2007
07:37 PM
by
SS_bnoon_SS
18
2,335
GM Engine & Exhaust Performance
Thorley Tri-Y Headers
(
1
2
)
Sport Side
on Mar 20, 2007
Mar 25, 2007
08:11 AM
by
Sport Side
12
1,489
GM Parts Classifieds
Header Idea
atom
on Feb 21, 2007
Feb 24, 2007
06:11 PM
by
99Silver6.0
8
1,119
GM Engine & Exhaust Performance
LS6 Heads
(
1
2
)
ShaneSmith
on Aug 26, 2006
Aug 28, 2006
06:09 AM
by
tdrumm
11
1,552
GM Engine & Exhaust Performance
thorley gains
black4x4
on Apr 28, 2006
May 1, 2006
04:47 PM
by
Vortec350ss
1
811
GM Engine & Exhaust Performance
LT's VS. TRI-Y
(
1
2
)
white1
on Jan 19, 2006
Jan 20, 2006
02:06 PM
by
hog
12
2,631
GM Engine & Exhaust Performance
Doug Thorley
Desert Reaper 5.3
on Dec 11, 2005
Dec 12, 2005
07:28 PM
by
ASkipper
8
1,215
GM Engine & Exhaust Performance
Poll
Thorley tri-y vs. standard long tubes poll in side ( opinions welcome )
(
1
2
)
LVSTOGOFST2002
on Oct 6, 2005
Oct 17, 2005
07:46 PM
by
ASkipper
18
2,823
GM Engine & Exhaust Performance
Thorley Tri-Y Install
nativetexan
on Jul 2, 2005
Jul 11, 2005
01:07 AM
by
jfree81762
7
1,090
GM Engine & Exhaust Performance
I'M PISSED!!!! LIGHTNING talking CRAP!!!
(
1
2
3
4
5
...
Last Page
)
desTRUCKtive
on Jan 17, 2005
Jun 13, 2005
09:30 AM
by
onyx
60
5,281
GMT 800 & Older GM General Discussion
thorley tri y
99stepside
on Jun 7, 2005
Jun 8, 2005
07:48 AM
by
99stepside
5
685
GM Engine & Exhaust Performance
S&S Tri-Y 24'' headers
Sport Side
on May 6, 2005
May 9, 2005
05:00 AM
by
Sport Side
8
980
GM Engine & Exhaust Performance
tri-y headers for 04
jerome
on May 8, 2005
May 8, 2005
10:18 PM
by
Dub Silverado
7
706
GM Engine & Exhaust Performance
thorley headers on a 6.0 AWD vehicle
VTODD
on Mar 29, 2005
Mar 29, 2005
10:20 PM
by
VTODD
0
769
GM Engine & Exhaust Performance
What Brand Headers???
(
1
2
3
)
032500hd
on Sep 15, 2004
Sep 17, 2004
07:07 PM
by
FILE
21
2,094
GM Engine & Exhaust Performance
Dyno proven gain questions
augiedog77
on Jul 15, 2004
Jul 16, 2004
10:40 PM
by
augiedog77
6
775
GM Engine & Exhaust Performance
Thorley tri-Y headers install
(
1
2
3
)
M.Roberts
on Mar 20, 2004
Apr 5, 2004
07:58 PM
by
M.Roberts
20
3,545
GM Engine & Exhaust Performance
will 5.3 shorty headers fit a 6.0?
(
1
2
)
M.Roberts
on Mar 23, 2004
Mar 25, 2004
11:27 PM
by
Silverado03
10
8,619
GM Engine & Exhaust Performance
Thorley tri-Y headers ?
(
1
2
)
M.Roberts
on Mar 6, 2004
Mar 10, 2004
01:30 PM
by
sfogg
12
2,416
GM Engine & Exhaust Performance
Any experience with Thorley 310Y Tri-Y Headers?
Steve Bryant
on Oct 25, 2003
Jan 7, 2004
08:04 PM
by
Birdie2000
8
9,474
GM Engine & Exhaust Performance
Thorley Tri-Y headers for Sale!!!
1999stepside
on Jul 29, 2003
Aug 8, 2003
01:54 AM
by
1999stepside
9
950
GM Parts Classifieds
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