Threads Tagged with 81l

2003, 2500, 81, 81l, engine, forums, gmc, hd, liter, noise, push, revved, rods, rokers, ticking

02 8.1l knocking/ticking HELP

2500HD8.1 on Dec 16, 2012

Mar 10, 2020 03:30 PM
by Brandon Walbeck

8

21,590

2001, 2004, 81, 81l, chevy, dual, engines, exhaust, fuel, gmc, improement, improvement, mileage, mpg, programmers, saving, upgrades, vortec

8.1L Fuel Improvement/power upgrades

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1 2)

moes04silverado on Dec 25, 2010

Jun 3, 2018 07:32 PM
by Michael Coleman

14

110,461

02, 03, 2002, 2500, 2500hd, 81, 81l, antifreeze, changing, chevy, leak, leaking, leaks, oil, smell, tranny

HELP...8.1 Loosing Coolant!!!

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1 2 3)

Ender06 on Mar 14, 2009

Mar 18, 2018 12:10 PM
by TonyT

29

54,708

81l, allison, avalanche, city, code, exhaust, lake, pipe, place, salt, trans, transmission, truck, vin, whos

How can i tell if this has the Allison tranny?

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1 2)

lifted99GMC on Oct 20, 2004

Jan 12, 2017 01:45 PM
by 1FastBrick

17

64,875

2002, 81, 81l, avalanche, bootheredneck, chevy, code, gm, line, p1220, p1221, p1221a, signal, tps

TPS and Tach Signals

BooTheRedneck on Mar 20, 2006

Oct 27, 2015 08:36 PM
by Velocity1

8

2,698

2006, 496, 59920, 81, 81l, flow, gm, headers, install, magnaflow, muffler, obtain, pics, stainlessworks, vararam

8.1L StainlessWorks Headers are ordered!!!

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Whippled 496 on Jan 26, 2009

Jul 2, 2015 10:07 PM
by Whipped383

106

32,919

496, 81, 81l, big, block, cam, efilive, headers, heads, jeep, raylar, tuning, upgrades, vortec, wiki, xr270hr

Vortec 8.1 Performace Help

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1 2)

OMalley on Mar 24, 2006

Mar 23, 2015 08:03 PM
by Modifyit15

14

23,355

81, 81l, 93, headers, long, octane, power, stainless, tube, tune, vortec, works

8.1 Tune vs Tune+Headers

Vortec8100 on Feb 12, 2014

Jan 31, 2015 01:30 AM
by TIMINATOR

8

39,476

New 90MM 8.1L Intake Manifold

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1 2 3 4)

Raylar Engineering on Jan 26, 2014

Jan 30, 2015 11:42 PM
by Whipped383

39

29,378

81, 81l, finally, flow, heads, intake, manifold, modification, numbers, ported, porting, poted, stock, torque

Finally! Modified Stock 8.1L Intake Manifiold Numbers!

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1 2)

Raylar Engineering on May 28, 2014

Dec 23, 2014 08:25 PM
by xx_ED_xx

19

30,722

Trucks and SUV Classifieds

03, 2003, 2500, 2500hd, 81, 81l, chevy, ecsb, gmc, performance, sale, supercharged, supercharger, truck, whipple

2003 2500HD ECSB 8.1L Whipple Supercharged

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1 2)

Whippled 496 on Feb 4, 2014

Mar 25, 2014 05:33 PM
by Whippled 496

14

22,669

53, 81l, balance, bank, chuggle, code, cylinder, engine, failure, fuel, h3, hummer, injector, p1174, saturn, symptoms, trim

P1174 Fuel Trim Cylinder Balance Bank1

TexasGMC08 on Feb 24, 2014

Feb 27, 2014 12:04 PM
by TexasGMC08

1

8,090

01suburban, 400, 81, 81l, boost, comparison, economy, engine, fuel, gas, ib, k2500, mileage, suburban, trans

01 Suburban K2500, 8.1L... MPG comparisons

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1 2)

Ronich69 on Jan 5, 2014

Feb 22, 2014 08:26 PM
by RezinTexas

15

7,140

8.1L Cam

02chevrod on Oct 30, 2013

Oct 31, 2013 09:37 PM
by chevy79

1

1,290

2001, 2500hd, 81, 81l, big, block, boat, chevy, gain, gmc, hd, headers, hp, sierra, silverado, stainless, works

Big Block 8.1 Headers w/2" Primaries

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1 2 3)

Stainless Works on Jun 25, 2012

Oct 24, 2013 06:43 AM
by yooperLS6

23

25,391

lifter tick?

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1 2)

Boosted_Silverado on Sep 9, 2013

Sep 16, 2013 09:11 PM
by hsiriyob

17

3,715

new here. picked up a 04 sierra 8.1L

polaris650freak on Sep 8, 2013

Sep 12, 2013 06:18 PM
by skaffy03

6

2,062

New Members

02, 07, 81, 81l, adjust, bigger, cam, compensate, fuel, general, increase, injectors, made, motors, pressure, regulator

8.1 fuel pressure and injector question

OMalley on Jul 23, 2013

Aug 5, 2013 09:49 PM
by OMalley

8

16,817

50psi, 81, 81l, drops, engine, liter, litre, low, mercruiser, modifications, oil, operating, pressure, rebuit, wot

8.1l rebuilt engine low oil pressure

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1 2)

whippled 8.1l build on May 21, 2013

Jul 7, 2013 02:42 PM
by 02_2500avalanche

13

17,145

compound twin turbo questions

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1 2 3 4)

whippled 8.1l build on Jun 4, 2013

Jun 7, 2013 11:16 AM
by t_thall

32

11,708

2000, 2001, 81, 81l, cam, engine, gm, high, injector, injectors, lbs, mileage, put, rich, silverado, vortec

Explain injectors

Txblue on May 29, 2013

May 30, 2013 11:56 AM
by Txblue

6

1,499

1and, 81, 81l, bank, defferance, fan, fuel, liter, paying, performance, powered, professions, raylar, top, trim, vbulletin

8.1L Timing - How low is low?

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1 2)

406jeep on Apr 20, 2013

May 25, 2013 09:42 PM
by 406jeep

17

14,584

42, 42lb, 81, 81l, buy, data, flow, fuel, injector, injectors, lb, marine, performancetrucks, size

42lb 8.1L Marine Injectors

406jeep on May 1, 2013

May 1, 2013 02:29 PM
by GMCtrk

1

6,978

2004, 48, 81, 81l, bbc, big, dart, intake, length, liter, making, picture, port, pushrod, room, silverado, stroke, whipple

8.1 engine options??

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1 2)

scottybeammeup on Apr 24, 2013

Apr 30, 2013 03:18 PM
by whippled 8.1l build

14

12,050

2500, 2500hd, 4, 81, 81l, 95, chev, chevy, dually, exhaust, exhuast, gas, gm, inch, k3500, muffler, mufflers, oem

How would a 4 inch exhaust be on a 8.1?

24gt24gt on Jan 1, 2013

Mar 5, 2013 07:20 PM
by tman_2006

6

10,271

2006, 81, 81l, diamond, fastest, forums, jeep, memberphpu, mods, oil, pistons, power, powered, raylar, vbulletin, vortec

Fastest 8.1 Thread...

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xx_ED_xx on Sep 20, 2010

Dec 19, 2012 11:47 PM
by xx_ED_xx

77

26,353

GM Drivetrain & Suspension

2002, 81, 81l, cab, duramax, gas, liter, regular, standard, swap

8.1l - duramax swap

whippled 8.1l build on Dec 18, 2012

Dec 19, 2012 08:46 AM
by 03sierraslt

5

2,318

2300, 33, 454, 81l, 83l, 917066, ati, blower, crank, noise, pulley, tvs, vortec, w510ax, whipple

Thinking outloud, please help...

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Whippled 496 on Mar 12, 2009

Dec 12, 2012 09:56 PM
by Whipped383

70

16,349

GMT 800 & Older GM General Discussion

180, 81, 81l, additive, additives, benefit, consumption, engine, hemi, high, mileage, oil, thermostat, truckers, trucks

engine oil additives

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1 2 3)

lawdog49 on Mar 27, 2011

Dec 11, 2012 03:44 AM
by Koots

21

5,672

23l, 2500hd, 81, 81l, alternator, install, intercooler, kit, part, relocation, supercharger, tronics, whipple

8.1l whipple feeler

whippled 8.1l build on Oct 20, 2012

Nov 5, 2012 10:37 AM
by whippled 8.1l build

8

4,382

1l, 2002, 81, 81l, charger, engine, kit, l18, pic, super, supercarger81, supercharged, supercharger, xl, yukon

8.1 supercharger?

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1 2 3)

sand man on Nov 18, 2011

Oct 23, 2012 08:19 PM
by Whipped383

29

10,694

2500hd, 60l, 81, 81l, diagram, ecm, egr, location, pigtail, valve, wire, wiring

8.1l with wiring and ecm

fletchermotorsports on Aug 21, 2012

Sep 27, 2012 05:38 PM
by fletchermotorsports

3

1,529

03, 383, 81, 81engine, 81l, boost, built, chevy, compression, cylinder, heads, maximum, porting, silverado, tune, whipple

8.1l high boost

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1 2 3)

whippled 8.1l build on Sep 18, 2012

Sep 22, 2012 08:30 PM
by whippled 8.1l build

27

41,047

2012, 60, 81, 81l, chevy, forum, injectiors, injectors, marine, performance, pound, pounds, silverado, stock, tuning

8.1 L Injectors

a.vinson on Feb 19, 2012

Sep 16, 2012 08:22 PM
by Whipped383

5

1,480

2001, 81, 81l, buy, chevy, engine, heads, kit, performance, raylar, sale, silverado, sts, truck, trucks, turbo

Raylar stuff

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1 2 3)

TieRod on Mar 3, 2012

Sep 16, 2012 02:39 PM
by xx_ED_xx

25

18,823

01, 02, 320, 81, 81l, bear, black, blackbear, chevy, code, florida, silverado, tune, tuner, tuners, western, westers

8.1 tuners

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1 2)

02SilveradoLT on Mar 20, 2012

Sep 16, 2012 11:10 AM
by Whipped383

10

40,634

60, 81l, c3, conversion, e85, filter, fuel, hp, hydroboost, injectors, level, lq9, nnbs, procharged, procharger, sierra, v8, weld

fuel injector help for H/C/I/E Procharged 6.0

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AndysC3 on Jun 13, 2012

Aug 28, 2012 11:57 PM
by AndysC3

102

12,485

FUEL SYSTEMS

2500, 464229, 60, 81, 81l, build, chevy, fast, fuel, injectors, pump, silverado, tierod, upgrade, whipple

another 8.1l whipple build still questions

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whippled 8.1l build on Apr 22, 2012

Aug 27, 2012 01:51 PM
by whippled 8.1l build

57

18,944

81l, custom, efi, live, operating, system, turbo, version

2 Bar EFILIVE OS upgrade

NegraRCSB2X4auto on Aug 18, 2012

Aug 23, 2012 11:42 PM
by NegraRCSB2X4auto

3

994

06, 2006, 4x4, 81, 81l, allison, bad, control, denali, ecm, ignition, module, silverado, switch, transmission, yukon

HELP..! 2006 8.1L ALLISON TRANS 4x4

400ss on Aug 8, 2012

Aug 10, 2012 03:06 PM
by Chevy_freak

3

1,813

42lb, 81l, 90, forum, gm, injector, injectors, intake, marine, parts, truck

8.1L marine 42lb injectors

AndysC3 on Jul 26, 2012

Jul 30, 2012 07:36 PM
by AndysC3

6

1,146

81, 81l, bear, black, cam, custom, heads, liter, mercruiser, mileage, nelson, raylar, specs, tune, westers

Best mileage 8.1

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1 2 3)

Txsasquatch on Jun 10, 2012

Jul 26, 2012 10:10 PM
by 330oldsmobile

20

7,467

2500hd, 53, 81l, gas, gto, headers, improve, long, longtube, lt, mileage, mpg, tahoe, tube, tune

Long tubes and economy?

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1 2)

custm2500 on Jun 26, 2012

Jul 8, 2012 10:43 AM
by custm2500

13

44,045

81, 81l, bolt, bolts, copper, forums, gaskets, header, headers, kerr, kit, locking, review, stage, stayput

locking header bolts 8.1l

Kerr on Mar 9, 2012

Jul 2, 2012 09:22 AM
by Kerr

5

2,125

2012, 81, 81l, cam, chevy, crank, forum, mercruiser, push, pushrods, rebuilt, relearn, rod, sensor, start, wont

8.1l whippled WONT START rebuilt motor

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1 2 3 4)

whippled 8.1l build on May 31, 2012

Jun 21, 2012 03:33 PM
by whippled 8.1l build

33

5,252

04, 1500, 2500, 496, 81, 81l, chevy, gmc, hd, header, ls1, silverado, turbo, turbocharged, turboed, whipple

8.1l whipple plus turbo

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1 2 3)

whippled 8.1l build on Jun 4, 2012

Jun 12, 2012 09:48 PM
by whippled 8.1l build

22

6,479

05, 496, 81, 81l, intake, l, manifold, pcv, performance, picture, problem, rocker, rockers, roller, upgrade

pcv system on 8.1L 496 advice

1 FMF on May 31, 2012

May 31, 2012 11:43 PM
by AKlowriderZ71

1

6,956

81l, case, casing, crank, drill, filler, location, ls1tech, neck, oil, pcv, performance, pressure, sts, tap, trucksnet, turbo

8.1l turbo, crank case pressure? help?

Kerr on Aug 30, 2011

May 31, 2012 11:11 PM
by 1 FMF

6

16,661

04, 2004, 2012, 53, 81, 81l, build, charger, forum, kenny, liter, silverado, super, supercharger, superchargers, whiple, whipple

8.1l whipple/ kennybell

whippled 8.1l build on May 22, 2012

May 22, 2012 08:17 PM
by whippled 8.1l build

4

1,624

2007, 60, 81l, injectors, lbs, silverado, tahoe, truck, turbo, uscar

new turbo needs injector upgrade

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1 2)

smdusaf on May 7, 2012

May 15, 2012 09:59 PM
by whippled 8.1l build

11

2,465

2012, 81, 81l, cats, flow, forum, fuel, gm, high, injector, injectors, marine, performance, size, sizes

8.1L Marine Injectors: Where to buy?

AlwaysFollowed on May 5, 2012

May 11, 2012 08:20 PM
by 01SUBCT

4

13,819

2004, 2500, 60l, 60to, 66, 66l, 81, 81l, chevrolet, conversion, dmax, duramax, hard, swap, swapping

6.0L to 6.6L DMAX Swap

Ron Glick on Apr 23, 2012

Apr 27, 2012 05:10 AM
by xx_ED_xx

4

3,177

2003, 81, 81l, add, block, blocker, blocking, blockoff, egr, gm, headers, liter, location, plate, silverado

EGR block off? on a 8.1L

Kerr on Dec 8, 2010

Apr 23, 2012 01:19 PM
by whippled 8.1l build

5

16,156

81, 81l, cam, dyno, engine, engines, heads, location, motors, parts, performance, pricing, raylar, truck, trucks

8.1L engine with Raylar heads

tjwong on Dec 12, 2005

Apr 16, 2012 05:02 PM
by xx_ED_xx

9

8,205

GM Drivetrain & Suspension

04, 496, 6010, 81, 81l, blazer, dart, ecu, firing, gen, msd, order, siamese, silverado, stand, vii, zz502

craming a 8.1l in a 72 blazer

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1 2 3 4 5)

truckrunner67 on Mar 6, 2012

Apr 7, 2012 06:14 PM
by xx_ED_xx

41

8,625

02, 04, 2005, 2500hd, 81l, allison, boost, cam, camgt23, gauge, gmc, gt23, kit, mods, sale, shift, sierra, wiring

Suggestions for next mods after blower

Bama2door on Mar 9, 2012

Mar 22, 2012 12:01 AM
by Bama2door

7

1,402

42, 42lb, 81l, compare, fuel, injector, injectors, intake, lm7, ls3, manifold, rail, rating, rings, truck

LS3 injectors

NextLevel on Mar 16, 2012

Mar 17, 2012 10:59 AM
by Bama2door

1

4,061

2500hd, 81, 81l, block, cab, cam, chevy, heads, liter, raylar, sale, short, single, truck, trucks

8.1l Raylar heads and forged short block.

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1 2)

TieRod on Mar 3, 2012

Mar 16, 2012 02:33 PM
by xx_ED_xx

10

5,172

08, 14, 1500, 2004, 496, 81, 81l, cam, fit, forum, halfton, inch, performance, project, rotors, silverado, xxedxx

My 8.1 Silverado project

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xx_ED_xx on Nov 26, 2009

Mar 14, 2012 10:32 PM
by JoeyGC5

57

30,051

PROJECTS GALLERY

42, 53, 53l, 81l, angle, chevy, choosing, good, injectors, job, lbs, street, turbo, valve, vortec

is this turbo good for my goals?

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1 2)

Cammed4ever on Mar 13, 2012

Mar 14, 2012 03:39 PM
by stock48

10

2,477

2005, 496, 81, 81l, build, chevy, gm, hp3, intake, manifold, picture, pictures, raylar, suburban, whipple

01 8.1L build up suggestions.

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1 2 3 4)

Kerr on Sep 23, 2010

Mar 12, 2012 07:20 PM
by xx_ED_xx

30

15,925

81, 81l, avalanche, chevy, ebay, exhaust, fit, gm, gmc, guys, header, headers, older, sale, tog, togs, truck

TOG The Other Guys 8.1 Headers for sale

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1 2 3)

xx_ED_xx on Jul 19, 2011

Jan 27, 2012 05:24 PM
by xx_ED_xx

24

9,441

2004, 53, 81l, block, chevy, fuel, fuse, harness, make, pump, samurai, silverado, stand, wire, wiring

making a stand alone harness

(

1 2)

delreyss on Jan 2, 2012

Jan 9, 2012 08:46 PM
by KIFER88

14

18,816

81l, auto, autocal, bear, black, blackbear, cal, locked, ls1, mpg, performance, results, reviews, sell, tune, tuner, tuning

AutoCal Tuning?

Ferocity02 on Jan 4, 2012

Jan 8, 2012 08:03 AM
by cdub81

6

4,229

81, 81l, cuts, engine, fine, floods, forum, gmc, happened, idle, liter, load, runs, stalls, yukon

8.1L bucking then die

usaf_hess on Oct 11, 2011

Dec 18, 2011 04:22 AM
by usaf_hess

9

2,800

81, 81l, boost, clogged, gm, injector, injectors, level, liter, litre, performance, specs, take

8.1l injector?

Nflddog1000 on Dec 15, 2011

Dec 15, 2011 07:26 PM
by SweetS10V8

1

1,074

2004, 81, 81l, blown, bottom, chevy, diablo, exhaust, gibson, performance, records, sticking, stock, suburban, throttle, turbo

8.1L turbo suburban track times.

(

1 2)

Kerr on Sep 19, 2011

Nov 28, 2011 02:42 PM
by hog

10

7,859

218224, 81, 81l, cam, cams, camshaft, chevrolet, chevy, crane, intake, manifold, performance, raler, specs, swap

8.1L cam selection

Kerr on Jun 1, 2008

Nov 23, 2011 06:28 PM
by sand man

7

26,926

GM Drivetrain & Suspension

2500hd, 80, 81l, 99, dakota, fan, howling, od, rt, slowing, tahoe, ujoints, vibrates, vibration, weird

Weird noice and vibration HELP!!!

Dgrown on Nov 15, 2011

Nov 15, 2011 07:00 PM
by Dgrown

3

1,320

2002, 2500, 81, 81l, american, hd, headers, heaers, long, lt, racing, tube, tube81, vortec, yukon

8.1 long tube headers

usaf_hess on Nov 11, 2011

Nov 12, 2011 11:53 AM
by usaf_hess

3

3,145

81, 81l, advance, chevy, efilive, idle, injector, issues, liter, low, octane, rich, running, silverado, table, timing

Anyone else have rich idle issues with 42/44lb 8.1L marine injectors

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1 2 3 4)

BlackGMC on Nov 4, 2011

Nov 10, 2011 11:18 AM
by BlackGMC

39

5,263

2001, 2002, 2004, 2011, 81, 81l, 81llifterremoval, adjustment, change, forums, kind, lifter, lifters, replace, silverado, sound, suburban, ticking

8.1L Lifter replacement

nathan_ on Oct 15, 2011

Nov 9, 2011 08:14 PM
by nathan_

5

28,670

02, 2002, 81, 81l, alison, allison, chevy, f150, ford, forum, gm, gmc, hoses, lines, trans, transmission

02 8.1L w/Allison Transmission Lines

moes04silverado on Oct 18, 2010

Nov 2, 2011 11:18 PM
by xx_ED_xx

3

3,641

53, 81, 81l, bigger, direct, fit, height, injector, injectors, installing, join, modeling, performance, replace, swap

8.1l injectors in a 2000 5.3

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1 2)

1quickTPI on Oct 29, 2011

Nov 1, 2011 01:01 PM
by grey matter 04

12

6,544