thorley - PerformanceTrucks.net Forums - Threads Tagged with thorley

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2014, 411, 53, 60, gears, power, silverado, thorley, towing

Odd towing question 5.3 vs. 6.0

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DarkblueTA on Mar 17, 2014

Nov 5, 2015 12:49 PM
by Tuskyz28

26

36,288

TOWING & OFFROAD PERFORMANCE

Wtb 0411 PCM and thorley tri y's

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1 2)

Richardman1992 on Feb 24, 2013

Aug 12, 2013 01:32 AM
by Richardman1992

16

1,848

WTB (Wanted To Buy)

4x4, 53, cats, fitment, headers, headers53, sierra, spintech, thorley, thy310y, triy, yukon

thorley headers 03 5.3 sierra california question

fishboy on Jun 20, 2013

Jun 29, 2013 07:37 PM
by fishboy

8

1,807

GM Engine & Exhaust Performance

09, 1500, catback, gmc, header, headers, install, nnbs, silverado, ss, stock, thorley, tri, triy, truck

Thorley Tri-Y header Install on NNBS

CDN SS on Mar 3, 2011

Jun 1, 2013 03:17 PM
by ForkHorn

7

5,584

GMT 900 Trucks General Discussion

07, 10bolt, 2500hd, 410, 4l80, adjustment, cable, doug, gmt900, headers, long, nnbs, pan, pans, shifter, silverado, sk350, snuglid, thorley, transgo, tube

4l80e 4l80 80e parts gmt900 nnbs 10 bolt

chris092183 on Aug 28, 2012

Aug 28, 2012 07:31 PM
by chris092183

0

2,389

GM Parts Classifieds

2012, 4x4, 53, billet, chevrolet, chevy, colorado, doug, headers, servos, super, superior, thorley, triy, v8

New here!!!

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1 2)

Hotrado on Apr 23, 2012

Apr 23, 2012 10:52 PM
by Hotrado

10

2,577

New Members

03, 2005, 2500, 2500hd, 310y, 310y49, 60, compare, exhaust, fit, hd, headers, liter, run, they310y1, thorley, triy

Do Thorley 310Y-49 headers fit '03 2500HD

kaudev on Apr 11, 2012

Apr 12, 2012 09:20 AM
by 2500HDKartRacer

2

1,750

GM Engine & Exhaust Performance

bullets, cost, doug, dual, duals, dynomax, exhaust, install, nnbs, pipe, postcad, supercharger, thorley, true, verses, xpipe

Exhaust suggestions? current setup: doug thorley tri y, true duals, x pipe, bullets

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1 2)

chris092183 on Apr 10, 2012

Apr 11, 2012 08:39 PM
by chris092183

13

4,347

GM Engine & Exhaust Performance

53, coast, doug, dual, exhaust, good, headers, mpg, sierra, silverado, thorley, thorly, tri, triy, triys

Doug thorley tri-y's

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Tkosinski2 on Jan 22, 2012

Apr 9, 2012 03:13 PM
by lowburb

27

20,173

GM Engine & Exhaust Performance

73, 87, c10, chevy, doug, dougthorley, headers, length, ls, lsx, mid, olds, swap, thorley, truck

Doug Thorley LS Swap Headers

Chevy-Fun on Jan 31, 2012

Feb 3, 2012 09:54 PM
by TXoldskool

3

6,338

Classic Trucks

bassani, dyno, headers, hemi, length, lengths, ls1, mid, midlength, numbers, shortys, silverado, thorley, tri, triy

Bassani Mid Length Header Dyno?

loloone on Oct 11, 2011

Oct 12, 2011 04:42 PM
by jiar577

1

2,196

GM Engine & Exhaust Performance

Wtb: Mp 112

jschrock on Sep 11, 2011

Sep 13, 2011 07:56 AM
by krambo

7

897

GM Parts Classifieds

310y49c, dallas, doug, dpug, gm, headers, long, ls1, sale, thorley, tube, tx

Used Doug Throley Headers For Sale

03ssilverado on Aug 14, 2011

Aug 23, 2011 04:26 PM
by 03ssilverado

6

1,734

GM Parts Classifieds

2010, 53, 68ar, chevy, colorado, doug, futuretrucks, headers, kits, magnum, opinion, performance, projects, t70, thorley, trim, turbo, v8

T70 on a 5.3 Colorado...Future Project

TonyVette on Aug 11, 2011

Aug 15, 2011 06:19 PM
by Bimmer Tech

7

6,106

FORCED INDUCTION

03, 2003, doug, gmc, header, headers, heres, kit, lts, sierra, silverado, ss, thorley, throley, thy310y49c, tri, triy

Doug Thorley Tri-Y Headers & aFe Stage 2 CAI

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Alpinestar on Mar 10, 2011

Apr 25, 2011 04:22 PM
by Alpinestar

17

3,961

GM Parts Classifieds

2004, 310, 310y, 49, 53, c230, dte310y49, header, headers, silverado, thorley, towing, tri, triy, y49

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

3,350

GM Parts Classifieds

050, 218, 60, 74, cammed, clip, clips, doug, engine, idle, lifter, ls7, seat, sound, soundofacammedengine, thorley, videos

Video Clip or sound clip of Cammed 6.0L Idle

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1 2 3)

TrickyTransAm on Nov 28, 2010

Nov 30, 2010 07:40 PM
by TrickyTransAm

21

4,717

GM Engine & Exhaust Performance

2500, 408, cam, cammed, daily, drag, driver, high, motor, performance, racing, ram, thorley, towing, triy

Towing/daily driver cam vs. Hot rodding/drag race type of cam

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HEADHUNTER92 on Oct 22, 2010

Oct 24, 2010 11:49 PM
by Steve Bryant

25

21,812

INTERNAL ENGINE MODIFICATIONS

08, 2004, 53, cam, doug, gm, heads, high, lq4, octane, pcv, silverado, thorley, valve, vortec

which 5.3 is the beefy one?

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TURBHOE on Oct 14, 2010

Oct 24, 2010 02:21 AM
by bobs2500hd

32

13,484

GM Engine & Exhaust Performance

1997, 57, 97, 97tahoe, doug, engine, headers, intake, maf, marine, performance, readings, swap, tahoe, thorley

97 tahoe 5.7

mhotrodscooter on Aug 10, 2010

Aug 11, 2010 08:13 AM
by mhotrodscooter

8

1,002

GMT 800 & Older GM General Discussion

1500, 2010, 53, camaro, charger, chevy, doug, dyno, handheld, lt, picture, pro, procharged, procharger, results, sct, silverado, stock, thorley, tuner

Fresh off the dyno, what do you think?

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1 2)

04SilverCrew on Jun 19, 2010

Jun 20, 2010 07:46 PM
by 04SilverCrew

12

9,783

FORCED INDUCTION

25326903, 9698, camshaft, doug, flex, headers, installation, l33, number, part, thorley, tri

Spring Cleaning Sale!

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1 2 3)

Burgundy&TanMan on May 14, 2010

Jun 19, 2010 10:15 PM
by NASTYL33

20

3,286

GM Parts Classifieds

03, 06, 53, 53l, gm, gmc, headers, long, put, sierra, silverado, theconleygroupincmsncom, thorley, tri, truck, tube

WTB: Long Tube headers 06 GMC CC

JetBlack98Z on Mar 9, 2010

Mar 15, 2010 04:02 PM
by JetBlack98Z

7

1,331

GM Parts Classifieds

Doug Thorley Shortys for sale!

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1 2)

WHITE5.3L on Feb 23, 2010

Mar 11, 2010 08:46 AM
by JAVI05

13

1,424

GM Parts Classifieds

310ydac, 4x4, custom, doug, grand, grande, headers, nnbs, pipe, problems, rio, stores, thorley, triy, trucks, valley

Thorley's on NNBS 4x4

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1 2)

pewterliftedz on Feb 28, 2010

Mar 3, 2010 11:24 AM
by jiar577

11

3,356

GM Engine & Exhaust Performance

35, 942, drop, ford, headers, lightning, net, pacer, performance, sale, sell, silverado, thorley, trade, truck

trade or sell my lightning

07redchevy on Dec 18, 2009

Dec 22, 2009 03:13 PM
by 454navyss

5

2,336

Trucks and SUV Classifieds

310y49c, 310yc, brands, ceramic, coated, doug, forum, header, headers, performance, silverado, thorley, thy, triy, trucks

Brand New Thorley Tri-Y Ceramic coated headers

gdbauer7 on Nov 30, 2009

Dec 2, 2009 05:47 PM
by supadaddy

7

1,472

GM Parts Classifieds

Please help!!!...

Badboy464 on Sep 16, 2009

Sep 16, 2009 11:39 AM
by budhayes3

5

743

GM Engine & Exhaust Performance

310y49, 60l, connect, doug, efilive, exhaust, gmc, headers, max, silverado, stock, thorley, thorleys, triy, vortex

Doug Thorley's

hawaiianstyle on Aug 29, 2007

Aug 25, 2009 08:55 AM
by Gordy M

4

1,541

GM Engine & Exhaust Performance

03, 1972, 2003, 2010, camaro, chevy, cheyenne, cobra, denali, doug, forum, headers, swb, thorley, versus

my 2010 camaro & 08 denali vs 2003 cobra

BADD ASS VHO on Aug 4, 2009

Aug 4, 2009 06:45 PM
by BADD ASS VHO

9

965

MULTIMEDIA (truck related)

114, 2008, 310y, 310yc, carb, doug, headers, impala, number, pipe, ss, thorely, thorley, thorleys, thy

Doug Thorley's

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1 2 3)

Jeteys5.3 on May 30, 2009

Jun 4, 2009 08:00 PM
by 006rcsb

24

3,473

GM Engine & Exhaust Performance

53, header, headers, lpp, obx, pacesetter, resonated, silverado, thorley, tip

Thorley vs OBX

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02SilveradoLT on Oct 16, 2008

Oct 25, 2008 09:29 AM
by brent1976

68

7,062

GM Engine & Exhaust Performance

48, doug, exhaust, set, thorley, thy310yc

Exhaust set up

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1 2)

GMade03 on May 11, 2008

May 16, 2008 06:44 PM
by PathfinderJr

12

1,804

GM Engine & Exhaust Performance

04, 310, 4wd, d3364y, doug, dougs, headers, hemi, installed, long, pics, silverado, ss, thorley, trailblazer, truck, tubes

Doug Thorley Truck headers

Mr.Nitrous on Feb 5, 2008

Feb 5, 2008 06:05 PM
by CDN SS

7

1,468

GM Parts Classifieds

310, 310y, 310yc, area, coated, code, doug, headers, long, obs, powered, silverado, thorley, thy310y, tri, triy, tubes, vbulletin, ws

Doug Thorley Tri-Y Coated Headers THY-310Y-C

DamnYankee on Jan 8, 2008

Jan 8, 2008 07:27 PM
by DamnYankee

5

2,529

GM Parts Classifieds

1500, 2wd, 301yfedc, 302y, 57, 96, 9698, 98, chevy, fedc, headers, tahoe, thorley, triy, truck

Thorley Tri-Y Headers 96-98 GM Chevy GMC Trucks SUVs

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1 2)

350SS on Oct 29, 2007

Jan 7, 2008 11:29 AM
by 350SS

12

1,878

GM Parts Classifieds

360202, 96, chevy, headers, hypertech, motor, pickup, programmer, settings, stroker, thorley

hypertech programmer [96 chevy]

shawn calvin on Jan 15, 2007

Nov 3, 2007 07:10 PM
by silverado

7

1,386

GM Parts Classifieds

310y, 310yc, cam, carb, dte, exhaust, headers, legal, loudest, model, silverado, smog, spacer, thorley, triy, vmax

CA Smog questions

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1 2 3)

2000LT on Oct 5, 2007

Oct 11, 2007 12:27 PM
by mds2004

24

3,187

GM Engine & Exhaust Performance

2462hkr, 2806, 57, 98, 99, doug, headers, hok2462hkr, hooker, l31, management, thorley, tm, torque, tri, vortec

98 5.7 vortec question

99/5.3w/hips on Mar 22, 2007

Jun 3, 2007 03:43 PM
by speedfreek88

3

1,176

Classic Trucks

53, combo, header, pipe, sierra, thorley, tri, triy

Thorley Tri-Y Headers

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1 2)

Sport Side on Mar 20, 2007

Mar 25, 2007 08:11 AM
by Sport Side

12

1,450

GM Parts Classifieds

who sells these?

SSSBLKOUT on Jan 30, 2007

Jan 31, 2007 06:09 AM
by SSSBLKOUT

3

676

GM Engine & Exhaust Performance

Ordered thorley's today...

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1 2 3)

DamnYankee on Sep 14, 2006

Dec 8, 2006 11:21 PM
by Steve Bryant

24

2,691

GM Engine & Exhaust Performance

1500, 208212, 210218, 2500, 60, cam, doug, header, install, loses, lq4, power, rpm, thorley, tune

Lq4 no power in 1500-2500rpm range

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1 2)

Tahoe6.0 on Oct 28, 2006

Nov 4, 2006 11:36 AM
by 1SlowHoe

10

4,167

Tuning, Diagnostics, Electronics, and Wiring

WTB Headers

IDISAPR on Sep 9, 2006

Sep 9, 2006 01:38 PM
by IDISAPR

0

474

GM Parts Classifieds

2005, 53, bad, bassani, chevy, doug, dougs, good, headers, length, makes, mid, nnbs, silverado, thorley

Mid-length Headers? Got Questions!

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1 2 3)

Torque_Wrench on Mar 31, 2006

May 1, 2006 07:03 PM
by 2004SSS

23

3,599

GM Engine & Exhaust Performance

199y, forum, headers, hemi, thorley, triy

thorley gains

black4x4 on Apr 28, 2006

May 1, 2006 04:47 PM
by Vortec350ss

1

788

GM Engine & Exhaust Performance

301yfedc, 4x4, doug, dte301yfedc, fed, fedc, headers, long, performance, thorley, thy301y, thy301yfedc, tri, tube, vortec

98 vortec 4x4 headers?

1redta on Dec 31, 2005

Jan 1, 2006 12:57 PM
by Tractionless

3

3,272

GM Engine & Exhaust Performance

2003, 2010, 310y, 48l, 81l, asm, doug, gmc, header, headers, jba, reviews, shorties, silverado, thorley, triy, yukon

Doug Thorley

Desert Reaper 5.3 on Dec 11, 2005

Dec 12, 2005 07:28 PM
by ASkipper

8

1,202

GM Engine & Exhaust Performance

60, alpha, gm, h3, long, pacesetter, standard, tahoe, thorley, thorleys, thorly, tri, triy, tube, tubes

Poll

Thorley tri-y vs. standard long tubes poll in side ( opinions welcome )

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1 2)

LVSTOGOFST2002 on Oct 6, 2005

Oct 17, 2005 07:46 PM
by ASkipper

18

2,742

GM Engine & Exhaust Performance

2004, 53, belanger, doug, headers, long, qtp, reviews, silverado, thorley, trucks, tube, vortec

QTP headers

dry_kill on Oct 11, 2005

Oct 11, 2005 11:22 AM
by Cakes

1

1,589

GM Engine & Exhaust Performance

04denali, 310ydac, dte310ydac, forum, mark, prices, thorley, thy310ydac

got some cash wanna go fast

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1 2 3)

03rado on Jul 27, 2005

Jul 31, 2005 09:13 AM
by 04Denali

28

2,937

GM Engine & Exhaust Performance

09, chevrolet, coming, doug, driver, header, headers, hissing, installing, motor, noise, problems, side, silverado, thorley

hissing noise coming from driver side engine bay

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1 2 3)

smiths_3 on Jul 23, 2005

Jul 30, 2005 06:47 PM
by 04BlackGmc

22

29,347

GM Engine & Exhaust Performance

300y, 53, bolt, dyno, factory, fit, header, headers, installed, k2500, pics, pipe, thorley, tri, triy, ypipe

Thorley Tri-Y Install

nativetexan on Jul 2, 2005

Jul 11, 2005 01:07 AM
by jfree81762

7

1,076

GM Engine & Exhaust Performance

Thorley Tri-Y install questions

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1 2)

2001Z71 on May 31, 2005

Jun 23, 2005 10:45 AM
by Steve Bryant

14

1,477

GM Engine & Exhaust Performance

2004, 53, chevy, headers, silverado, thorley, tri, triy

thorley tri y

99stepside on Jun 7, 2005

Jun 8, 2005 07:48 AM
by 99stepside

5

674

GM Engine & Exhaust Performance

Thorleys

Dub Silverado on May 5, 2005

May 5, 2005 07:06 PM
by Dub Silverado

7

639

GM Engine & Exhaust Performance

Thorley Headers.. need info

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1 2)

98TAauto on Mar 25, 2005

Mar 31, 2005 06:44 AM
by ASkipper

13

1,195

GM Engine & Exhaust Performance

310, 310y, 53, 53l, dte, equal, gm, headers, length, model, silverado, ss, thorley, tri, triy

thorley headers on a 6.0 AWD vehicle

VTODD on Mar 29, 2005

Mar 29, 2005 10:20 PM
by VTODD

0

759

GM Engine & Exhaust Performance

al, headers, installation, ls1, montgomery, performance, thorley, torque, values

Header Install

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1 2)

KBOBOZ71 on Mar 15, 2005

Mar 19, 2005 03:17 PM
by skindog39

14

1,374

GM Engine & Exhaust Performance

Thorley headers for 03 SS?

383ss on Jan 27, 2005

Jan 30, 2005 10:08 AM
by 383ss

9

701

GM Engine & Exhaust Performance

Thorley header port pictures?

styleandspeed on Dec 19, 2004

Dec 20, 2004 07:34 PM
by Sport Side

7

779

GM Engine & Exhaust Performance

Thorley owners....inside

LS1S10 on Sep 20, 2004

Sep 21, 2004 11:37 PM
by moregrip

7

768

GM Engine & Exhaust Performance

2004, headers, hedman, install, installed, rating, silverado, thorley

Thorley headers installed

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1 2)

Black02Z71 on Mar 29, 2004

Jul 5, 2004 10:18 AM
by Gordy M

15

1,845

GM Engine & Exhaust Performance

04, 2003, 300, 4l65e, headers, heat, installing, performancetrucks, shield, silverado, thorley, tri, triy, yheaders, z71

Thorley tri-Y headers install

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1 2 3)

M.Roberts on Mar 20, 2004

Apr 5, 2004 07:58 PM
by M.Roberts

20

3,385

GM Engine & Exhaust Performance

2001, 2004, 48l, 53, 60, engine, fit, header, headers, shorties, shorty, silverado, thorley, triy

will 5.3 shorty headers fit a 6.0?

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1 2)

M.Roberts on Mar 23, 2004

Mar 25, 2004 11:27 PM
by Silverado03

10

8,418

GM Engine & Exhaust Performance

03, 2004, 408, ceramic, clear, coating, doug, exhaust, headers, hemi, silverado, suburban, thorley, tri, triy

Thorley tri-Y headers ?

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1 2)

M.Roberts on Mar 6, 2004

Mar 10, 2004 01:30 PM
by sfogg

12

2,367

GM Engine & Exhaust Performance

53, approved, california, carb, chevy, compliant, emission, emissions, friendly, headers, thorley

Emission Friendly Header

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1 2)

lastSS on Feb 23, 2004

Feb 25, 2004 02:30 AM
by Flyer

16

2,046

GM Engine & Exhaust Performance

2001, 2500hd, 310y, 310yc, 53, header, headers, lq4, miller, randy, silverado, thorley, tri, triy, yukon

Any experience with Thorley 310Y Tri-Y Headers?

Steve Bryant on Oct 25, 2003

Jan 7, 2004 08:04 PM
by Birdie2000

8

9,386

GM Engine & Exhaust Performance

1989, 2003, doug, dynamometer, dyno, dynoed, fuel, headers, injector, ratings, rwhp, silverado, ss, stock, thorley

Silverado SS stock dyno #'s ????

silverado on Dec 7, 2003

Dec 7, 2003 07:09 PM
by BigTex

2

4,332

GM Engine & Exhaust Performance

216, 216220, 220, 53, cam, comp, ctsv, doug, dyno, headers, numbers, predator, results, silverado, thorley, tuner

Dyno results with comp 216/220 cam!

Okie02 on Jun 24, 2003

Jun 24, 2003 10:28 PM
by Ryan23silverado

7

10,082

GM Engine & Exhaust Performance

53l, 74, 74l, 99, edelbrock, ford, headers, kit, motor, performance, squires, thorley, turbo, vortec, whipple

best place to get long tubes for 7.4 L vortec???

VTtransam on May 26, 2003

Jun 2, 2003 02:47 PM
by Neil 6.0

7

9,405

GM Engine & Exhaust Performance

What exhaust should i run with my thorleys?

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1 2)

Okie02 on May 1, 2003

May 2, 2003 05:04 PM
by Bayou Z71

11

1,190

GM Engine & Exhaust Performance

2006, chevy, cut, cutout, cutouts, doug, electric, exhaust, install, kent, open, side, thorley, throley, trailblazer

electric exhaust cutouts

MacADaYear on Feb 2, 2003

Feb 8, 2003 11:52 AM
by CrazyAggie05

6

1,861

GM Engine & Exhaust Performance

53, forum, gains, gibson, header, headers, hp, jba, make, shorty, thorley, trailblazer, vortec

JBA, GIBSON, and Thorley headers: which make most hp?

98TAauto on Dec 5, 2002

Dec 5, 2002 09:24 PM
by 98TAauto

5

3,085

GM Engine & Exhaust Performance