85 - CorvetteForum - Chevrolet Corvette Forum Discussion

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1984, 83, 85, c4, conversion, convertible, convertiple, corvette, edition, gorgeous, greenwood, make, prototype, tops, true, vette

BS or For Real?: 85 Corvette Convertible Prototype (Made by Greenwood)

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TIMSPEED on Dec 5, 2002

Mar 26, 2026 11:25 PM
by J.Abbott

31

5,914

C4 General Discussion

1984, 84, 85, 89, 96, corvette, engine, fit, mounts, roof, sunroof, targa, top, tops, vette

Will an '89 targa top fit an '85 ?

L8C4 on Jul 12, 2010

Jan 31, 2026 04:03 PM
by Oldboyztoy

11

7,928

C4 General Discussion

85, c4, corvette, l98, location, o2, restoring, sensor, sensors

Is there one or two o2 sensors 0n '85 L98

mikeysee1 on Oct 24, 2009

Dec 20, 2025 04:46 PM
by judy marie

8

1,838

C4 Tech/Performance

1985, 85, coil, core, corvett, corvette, heater, lines, picture, removal, remove, removel, replacement, vette, youtub

1985 heater core removal

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1 2)

lockhart on Jan 5, 2002

Nov 23, 2025 03:11 PM
by RustyDuster

37

17,806

C4 General Discussion

1985, 85, c4, cooler, corvette, filter, hose, hoses, line, lines, oil, oses, removal, stock, warmer, water

1985 stock oil cooler hose replacements

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1 2)

FOURSPEEDVETTE on Feb 15, 2011

Oct 27, 2025 08:48 AM
by BLUE1972

36

16,435

C4 Tech/Performance

1989, 2006, 2007, 85, corvette, factory, fsm, gm, helm, helms, manual, printed, service

FSM same as Helms?

kwkenuf85 on May 1, 2009

Oct 9, 2025 08:37 AM
by WVZR-1

7

1,556

C4 General Discussion

85, c5, correct, corvette, fuel, ground, installation, jumpers, location, pump, relay, te, voltageat

Fuel pump relay help needed, please!!

DustinWinkle on Apr 16, 2010

Jul 8, 2025 10:31 PM
by GrantandGrace

8

1,980

C5 Tech

85, c4, corvette, forum, gaithersburg, lt1, maryland, md, performance, reviews, shop, shops, tonys, vette, work, zr1

Tony's Corvette Shop in Gaithersburg, Maryland

storymitchell on Mar 19, 2002

May 30, 2025 03:56 PM
by Snakecharmer383

11

2,613

C4 Tech/Performance

1985, 43, 85, akron, automatic, c4, conversion, corvette, kit, ohio, sale, shifter, swap, t56, transmission, tunnel

Another 4+3 to T56 Swap For a 1985 Vette

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1 2 3)

gkrynick22 on Jun 8, 2011

Apr 2, 2025 11:41 AM
by Slow85Vette

58

19,836

C4 Tech/Performance

1f, 85, corvette, ecm, grade, parameter, pcm, upgrade

Poll

Upgrade 85 ECM?

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1 2)

nonetooclose on Feb 18, 2006

Feb 26, 2025 12:44 PM
by kentsimon

30

9,007

C4 Tech/Performance

1996, 2007, 85, 91, brakes, c4, corvette, determine, duty, handling, have, hd, heavy, package, suspension, z51

How do I know if I have heavy duty suspension?

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1 2)

diverb on Jan 16, 2012

Jan 6, 2025 09:15 PM
by 93Z07

21

12,554

C4 General Discussion

1984, 85, c4, chip, corvette, corvettes, hp, jet, kit, kits, l98, manifold, single, turbo, twin, wwwhpturboscom

they have a turbo kit for C4..

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1 2 3)

red L98 on Mar 21, 2006

Sep 24, 2024 06:34 PM
by Sabre34

51

42,110

C4 Tech/Performance

1984, 1987, 84, 85, breakdown, c3, c4, corvette, corvettes, dash, dashpad, pad, removal, remove, removing

85 C4 Dash pad Removal

rrwebster on Oct 6, 2010

Jul 1, 2024 02:12 PM
by AFammo

5

4,077

C4 General Discussion

85, c4, corvette, hard, hot, intermittent, l98, start, starting

Sometimes hard starting 89 L98 with 140,000 miles

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1 2)

jzvette on Jun 1, 2005

Jun 6, 2024 12:22 PM
by Seahunt73

33

3,348

C4 Tech/Performance

1985, 85, blowing, check, coolant, corvette, diagnosis, fan, fuse, main, running, trouble, troubleshooting, vette, working, works

85 coolant fan not working???????

Doo on Jun 7, 2005

Apr 28, 2024 02:33 PM
by Joe3571

15

16,178

C4 Tech/Performance

1986, 84, 85, 86, adjust, adjustment, c4, cable, change, corvette, dentent, points, selfadjust, shift, throttle, tv

TV Cable Adjust

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1 2)

86PACER on Feb 12, 2009

Jan 3, 2024 04:02 PM
by 86PACER

20

19,254

C4 Tech/Performance

1984, 84, 84corvette, 85, 87, c4, corvette, houston, motor, odometer, odomotor, parts, problem, vette, working

84 Corvette Odometer Not Moving

dredd0822 on May 15, 2008

Sep 21, 2023 05:55 PM
by Sabre34

17

8,615

C4 Tech/Performance

350, 84, 85, chip, chips, computer, corvette, jet, module, performance, resources, stage, tpi, vette, work

Jet Performance Chip - 85 350 TPI

Joshua S. Smith on Apr 30, 2003

May 25, 2023 02:29 PM
by trainlikeme

6

3,448

C4 Tech/Performance

85, corvette, door, heater, lever, slide, temperature

Stiff Climate Control Slider

pletzvet on Apr 23, 2012

Apr 11, 2023 11:41 AM
by Sabre34

6

2,094

C4 Tech/Performance

1985, 1999, 85, c4, change, corvette, flasher, flashers, located, location, relay, replace, signal, singnal, turn

85 Turn Signal Flasher Location

lars on Jun 4, 2007

Mar 24, 2023 01:21 AM
by Ridgelandbaseball

17

7,530

C4 Tech/Performance

1984, 1985, 85, c4, c5, corvette, corvettee, feul, filter, fuel, install, located, location, pump, relay

85 fuel filter location

rdullin on Jul 6, 2009

Mar 8, 2023 10:45 AM
by SH-60B

8

16,567

C4 General Discussion

1986, 85, bearing, bolt, bolts, c5, corvette, gm, hub, rear, size, t47, torx, torxs, wheel

Rear hub Torx Bolt

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1 2)

chb88 on Dec 27, 2003

Jan 9, 2023 11:23 AM
by Sleazy Rider

24

7,359

C4 Tech/Performance

85, bad, corvette, failure, filter, fuel, l98, location, o2, oil, pressure, pump, sensor, switch, symptoms, work

85 corvette died, code 44

buzzbomb on May 8, 2010

Dec 18, 2022 05:34 PM
by Sabre34

14

5,839

C4 Tech/Performance

1984, 1996, 2004, 85, adjust, adjustment, c5, corvette, idle, position, sensor, setting, speed, throttle, tps, voltage, wot

How to Adjust your Early C4 TPS and Idle Speed

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black85 on Jun 24, 2009

Dec 4, 2022 04:39 PM
by jseremba

125

169,587

C4 Tech/Performance

1990, 85, ac, automotive, c4, c5, circuit, circuitsdiodesac, clutch, compressor, corvette, electrical, engage, engaged, engaging, start, stays

90 L98 - AC Compressor not engaging

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1 2)

Dale1990 on Jun 25, 2005

Oct 11, 2022 06:18 PM
by Sabre34

23

6,504

C4 Tech/Performance

1985, 43, 85, acceleration, average, corvette, fuel, injectors, lateral, manual, miles, mpg, remove, transmission, weighs

85 Corvette comments needed

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1 2)

eastltd on Sep 26, 2010

Oct 5, 2022 04:23 PM
by PacerX

28

5,478

C4 General Discussion

083, 113, 1989, 85, 882, 91, aluminum, bigger, cast, corvette, flow, heads, iron, l98, valve, vette

L-98 cast heads vs aluminum

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1 2)

samdweezel05 on Mar 12, 2009

Sep 23, 2022 03:30 PM
by THE 383 admiral

26

27,982

C4 Tech/Performance

1985, 2555016, 85, back, c4, corvette, falken, find, goodrich, put, size, smaller, stock, tire, tires

Need tires for a 85 C4

1985 C4 in progress on Apr 20, 2011

Jun 23, 2022 12:35 PM
by wilcar

14

23,459

C4 General Discussion

1993, 1996, 85, 93, belt, chevrolet, corvette, double, lt1, remove, replace, replacement, replacing, ribbed, serpentine, single

Replacing Serpentine Belt on LT1

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1 2)

IndianaJef on Sep 17, 2003

Jun 15, 2022 01:37 PM
by mjsusa1

24

11,658

C4 Tech/Performance

01, 1977, 81, 85, c4, corvette, corvtte, delay, interior, intrior, light, location, mustang, relay, timer

Interior Light Delay Timer

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1 2)

whiteflame on Nov 16, 2007

Apr 12, 2022 01:18 AM
by vertige68

22

5,747

C3 Tech/Performance

85, adjust, bright, c4, c5, cluster, corvette, dash, dashboard, dim, dims, fixing, interior, key, lights, turned

85 Dash Lights Dim

bubbaray on Feb 3, 2003

Apr 6, 2022 11:29 AM
by 383vett

5

4,355

C4 Tech/Performance

1985, 85, c4, corvette, fuel, lost, position, power, pump, running, stops, strainer, working

No Power to Fuel Pump 85 Help!

Pwnage1337 on Jul 27, 2010

Jan 18, 2022 02:53 PM
by Ethan KapsC4

3

6,006

C4 Tech/Performance

85 L98 cam specs

snowmanmdp on Aug 12, 2008

Jan 15, 2022 08:24 PM
by Sabre34

5

2,452

C4 Tech/Performance

1984, 85, 86, 87, c4, cam, cast, corvette, factory, head, heads, iron, l98, spec, specs, stock, upgrades

'86 L98 Stock cam specs

Five Window on Nov 26, 2002

Jan 4, 2022 07:46 PM
by mike1111

6

8,980

C4 Tech/Performance

1985, 85, blemished, c5, column, corvette, install, lock, plate, pull, removal, remove, replacement, steering, vette, wheel, wheels

Replacing 85 Corvette Steering Wheel

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1 2)

drumchum on Feb 29, 2012

Dec 27, 2021 07:43 AM
by Sabre34

29

31,228

C4 Tech/Performance

131, 1992, 1994, 2001, 85, bad, c4, corvette, ecm, idle, r1, symptoms, symptons, systhoms, volts

Symptoms of a bad ECM

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1 2)

pipe on Apr 21, 2006

Oct 31, 2021 03:04 AM
by Wilson53.vette

28

22,888

C4 Tech/Performance

10, 1985, 85, c4, clean, clog, corvette, filler, fittings, fuel, gas, symptoms, takes, tank, water

water in fuel/tank 85-C4

allenw@icsgroup.com on Jan 8, 2003

Sep 5, 2021 05:06 PM
by Corvette Suzy

9

7,987

C4 Tech/Performance

1985, 85, c4, cold, corvette, dies, idle, pcv, problem, stalling, stalls, start, stop, valve

1985 coupe stalls out occasionally

vettelover1985 on Aug 13, 2002

Aug 18, 2021 09:58 PM
by coupeguy2001

8

8,888

C4 Tech/Performance

1985, 85, 86, add, bolt, cheap, corvette, cutting, free, horsepower, horspower, increase, lid, ons, ways

Where to start for increased HP on an 85

Doo on Dec 28, 2003

Jul 2, 2021 02:46 PM
by sahhas

17

24,945

C4 Tech/Performance

1985, 85, city, corvette, made, monetary, numbers, package, rare, rims, values, z51

1985 Z51 Stock How many left?

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1 2)

ROCKY85 on Nov 26, 2003

Jun 23, 2021 05:18 PM
by Sabre34

27

3,974

C4 General Discussion

1985, 85, check, checking, code, codes, computer, corvette, diagnostic, engine, light, read, reading, trouble, vette

Trick for reading codes on a 1985

robertpel9 on Jan 31, 2009

Jun 11, 2021 06:06 PM
by Tom400CFI

16

17,607

C4 General Discussion

15, 1984, 20, 85, 87, 89, 99, bezel, c4, corvette, din, double, fits, open, put, radio

Pics of the new 84-89 Double Din radio bezel! Add NAV to your C4

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1 2 3)

Double D Mods on Feb 4, 2011

May 2, 2021 10:04 AM
by Los211

41

41,652

C4 General Discussion

1984, 1990, 454, 700r4, 85, big, block, c3, c4, corvette, fit, headers, lt1, motor, swap

Big Block C4s

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ZR-1DUDE on Jan 4, 2011

Mar 1, 2021 03:31 PM
by vetterobert

78

31,273

C4 Tech/Performance

1985, 85, c4, coming, corvette, fog, headlight, lampsoff, light, lights, problems, running, switch, switches, toggle

Parking & Fog Light Problem - 85 C4

perezal on Feb 6, 2011

Feb 14, 2021 11:34 AM
by FOURSPEEDVETTE

12

11,875

C4 General Discussion

1985, 85, 89, breaker, circuit, cool, corvette, fuse, horn, horne, parts, problems, stopped, wire, wiring

1985 Corvette Horn issues

pghjeeper on May 14, 2011

Feb 3, 2021 01:40 PM
by Tommie40

12

11,233

C4 Tech/Performance

4l60e, 85, change, corvette, rpm, shift, shifting, shifts, slow, speed, trans

is there a way to change shifting rpm on 85?

KevinRR on Jun 18, 2009

Dec 9, 2020 07:44 PM
by cv67

17

2,697

C4 Tech/Performance

1985, 85, 86, corvette, factory, fuel, gas, injector, injectors, lbs, pounds, replace, size, stock, whats

What size injectors for a stock 85?

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1 2)

onetrackmind on Apr 20, 2006

Dec 2, 2020 02:30 AM
by VikingTrad3r

26

22,924

C4 Tech/Performance

85, 86, ac, blower, blowing, corvette, hard, hood, hvac, issues, motor, stopped, turned, vette, wiring, working

Heater blower motor not working properly 85 vette

gkrynick22 on Apr 19, 2011

Oct 21, 2020 08:18 AM
by Lowflyer281

12

11,404

C4 Tech/Performance

1985, 85, aux, auxiliary, bwd, coolant, cooling, corvette, dewitts, fan, fans, location, switch, temperature, tfs4

1985 auxiliary fan switch?

tie_one_on on Mar 26, 2009

Jul 29, 2020 06:22 PM
by playsdixie

18

6,149

C4 Tech/Performance

2001, 85, consumes, corvette, oil, operating, temp, vette

85 Vette uses 1 qt oil every 550 miles

rcd on Dec 12, 2001

Apr 15, 2020 09:54 PM
by JackDidley

15

1,637

C4 Tech/Performance

85, 90, bolt, bolts, corvette, head, l98, length, sealant, sealer, size, torque, yield

L98 Head Bolts

dmyers on Jul 14, 2005

Mar 18, 2020 11:15 PM
by Tvette99

12

7,635

C4 Tech/Performance

84, 85, 90, centering, codes, corvette, pinion, pinon, rack, rackpinion, rebuild, replacement, shooting, steering, trouble

84 -90 steering rack & pinion

Redvetter00 on Mar 11, 2004

Dec 27, 2019 06:46 PM
by Ray Quayle

15

3,002

C4 General Discussion

2000, 84, 85, c4, corvette, freeze, frost, leaking, location, motor, plug, plugs, removal, stuck, tool

Leaking Freeze plug

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1 2)

Opihi59 on Sep 5, 2010

Oct 20, 2019 06:00 PM
by Kalohe

23

14,596

C4 General Discussion

84, 85, c4, corvette, hood, intake, l33, ls3, ls6, mileage, oil, pan, pilot, scoop, swap, swapping, trans

LS Swap w/ Richmond 6spd

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1 2 3 ... Last Page)

Steve85 on Apr 26, 2012

Aug 29, 2019 10:33 PM
by Steve85

64

21,022

C4 Tech/Performance

1984, 85, corvette, diagram, headlights, lights, open, schematic, wont

'85 headlights won't open?

stormin310 on Dec 13, 2005

Aug 28, 2019 07:31 PM
by Hot Rod Roy

12

2,448

C4 Tech/Performance

1985, 85, corvette, location, oil, pressure, pump, stock

85 stock oil pressure readings

pletzvet on May 29, 2007

Jul 26, 2019 11:39 PM
by catso

11

5,600

C4 Tech/Performance

1985, 1999, 85, c4, corvette, fit, max, size, sizes, stock, tire, tires, vette, wheelstires, wide

Max tire size for an 85?

steveelsbury on Nov 4, 2002

Jul 8, 2019 12:13 AM
by MatthewMiller

13

10,171

C4 Tech/Performance

30, 85, 87, c5, corvette, falling, forum, fuel, jump, key, passkey, pressure, relay, schematic, sock, sp122, symptoms, times, walbro

no fuel pressure question

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1 2 3)

Toby Van Horn on May 27, 2010

Jun 24, 2019 01:32 PM
by Argentimage

42

21,701

C5 Tech

1985, 85, c4, corvette, instalation, install, line, lock, pics

My 85 Line Lock Install With Pics.....

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1 2)

thecatmac on Aug 18, 2007

Jun 14, 2019 03:52 PM
by MrBigDee

23

8,362

C4 General Discussion

1985, 85, c4, chuck, corvette, key, locking, lug, lugnut, master, nut, nuts, oem, socket, tire, tool

WTB 85 c4 locking lug nut key

rsfire on Oct 23, 2011

May 1, 2019 09:51 AM
by Marchilla Isom

9

2,544

C4 Parts for Sale/Wanted

2000, 2002, 85, average, c4, c5, corvette, good, ls1, noral, normal, oil, pressure, rpm, vette

what is "normal" oil pressure

Mark85Vett on May 26, 2002

Apr 7, 2019 05:56 PM
by Katzey

13

27,815

C5 Tech

2004, 85, 94, c4, c5, continues, corvette, cut, play, radio, shut, stero, switch, turn, wont, z06

Radio won't turn off automatically

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1 2)

Flylow on Sep 29, 2001

Feb 18, 2019 12:28 PM
by belairbrian

21

15,952

C4 Tech/Performance

85, build, c6, conversion, corvette, drop, e85, e85monster, ethanol, hptuners, injectors, ls1, mango, olfa, optimized, production, run

E85monster: Conversion for E85

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1 2 3 ... Last Page)

SpinMonster on Jan 17, 2009

Jan 13, 2019 11:04 AM
by saplumr

66

18,168

C6 Tech/Performance

1985, 1989, 85, california, car, corvette, ct, egr, emissions, equipment, equiptment, pickup, pump, remove, setup, smog

1985 is now a classic. What can be removed with no emissions test

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1 2 3)

montie98 on Apr 9, 2010

Dec 28, 2018 11:18 AM
by Z51BOB

53

18,711

C4 Tech/Performance

000, 1985, 85, c4, corvette, dash, ecm, ecu, location, lower, panel, passenger, removal, remove, vette

ECM Location 1985

nickpe on Jul 26, 2011

Oct 11, 2018 06:14 PM
by playsdixie

4

17,719

C4 Tech/Performance

85 c4 code 43

martyp63 on Feb 25, 2012

May 22, 2018 02:23 AM
by Schieby

5

8,100

C4 Tech/Performance

14076924, 85, arm, c4, clicking, coated, control, corvette, lower, mechguy79msncom, parts, teflon, washer, washers, washerscorvette

It's the washers!!

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1 2 3 ... Last Page)

quickcat on Oct 23, 2007

May 1, 2018 09:50 AM
by Joe C

102

31,570

C4 Tech/Performance

1984, 1986, 73, 85, backlights, c3, corvette, dash, dimmer, instrument, light, located, replace, sw, switch, vette

dash light dimmer help

85blkrose on Jan 27, 2008

Apr 18, 2018 12:17 AM
by 21boy

12

12,216

C4 Tech/Performance

1986, 3rd, 84, 85, adding, brake, c4, corvette, external, hatch, housing, light, rear, routing, switch, vette, wire

adding a 3rd brake light on a 85

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1 2)

RJblk85vette on Apr 24, 2010

Apr 14, 2018 09:56 AM
by 856SPEED

25

9,779

C4 Tech/Performance

1982, 1984, 84, 85, adjustment, c4, corevette, corvette, dcs, fuel, pressure, presure, pump, regulator, swap

84 Fuel pressure regulator adjustment and OEM 85 fuel pump part # ??

redlines on Jul 18, 2008

Apr 8, 2018 01:33 PM
by 1984Z51auto

14

14,980

C4 Tech/Performance

Threads Tagged with 85