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CorvetteForum - Chevrolet Corvette Forum Discussion
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Threads Tagged with
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Sticky
Tech Info - LT5 Modifications/Rebuild Tricks (500+hp)
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Dynomite
on Feb 20, 2012
Mar 12, 2026
01:40 PM
by
Dynomite
339
535,220
C4 ZR-1 Discussion
L98 Center Bolt Valve Covers
vettman31
on Oct 30, 2011
Dec 23, 2025
11:30 AM
by
Sabre34
7
2,160
C4 Parts for Sale/Wanted
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
1,807
C4 Tech/Performance
Does anyone know the history of the Optispark?
(
1
2
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Mr. Peabody
on May 10, 2008
Aug 20, 2025
11:04 AM
by
bb62
29
21,603
C4 General Discussion
C5 guys needs advice on Lingenfelter LPE 420ci L98 project.
IFLUBYU
on Sep 18, 2006
May 30, 2025
09:55 AM
by
aucjo01
19
2,820
C4 Tech/Performance
Can you beat the smog test w/no air pump?
Southern Comfort
on Jun 1, 2003
Feb 11, 2025
03:09 PM
by
Mitchellbandur7
6
1,620
C4 Tech/Performance
Those who have deleted the AC without a delete pulley
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mseven
on May 7, 2008
Jan 5, 2025
03:30 PM
by
AZSP33D
114
57,311
C4 Tech/Performance
How to find TDC without tearing down
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1
2
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The Bus
on Sep 30, 2007
Dec 16, 2024
05:55 PM
by
Sabre34
24
5,415
C4 Tech/Performance
they have a turbo kit for C4..
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red L98
on Mar 21, 2006
Sep 24, 2024
06:34 PM
by
Sabre34
51
42,087
C4 Tech/Performance
TPIS A/C delete for 88-91 L98
Firevette
on Oct 6, 2009
Sep 8, 2024
05:31 PM
by
Topduarte
5
2,305
C4 Parts for Sale/Wanted
Sometimes hard starting 89 L98 with 140,000 miles
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1
2
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jzvette
on Jun 1, 2005
Jun 6, 2024
12:22 PM
by
Seahunt73
33
3,322
C4 Tech/Performance
L98 Crate Engine
ejscarfo
on Mar 7, 2007
May 7, 2024
07:34 PM
by
jazfe
17
25,065
C4 Tech/Performance
L98 - "Drive" or "Overdrive" ?
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1
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DonRich90
on Oct 7, 2002
Apr 8, 2024
05:34 PM
by
Sabre34
42
7,639
C4 General Discussion
Horsepower for a L98 engine
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1
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3
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michelc4
on Mar 31, 2003
Mar 21, 2024
05:56 PM
by
Dacer Spears
48
19,981
C4 Tech/Performance
Fuel Pressure Schrader Valve - Thread type and size
pletzvet
on Dec 23, 2009
Mar 21, 2024
03:03 PM
by
WVZR-1
9
7,765
C4 Tech/Performance
Oil leak behind the distributor on '89 L98?
TheCorvetteKid
on Jul 16, 2005
Mar 6, 2024
05:34 PM
by
Sabre34
9
4,255
C4 Tech/Performance
Best Exhaust Option For L98?
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1
2
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mash2k
on Aug 3, 2005
Oct 30, 2023
10:26 AM
by
stonesnpebbles
26
18,552
C4 General Discussion
L98 Crossfire!?
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1
2
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Lionsden
on Jul 26, 2003
Oct 27, 2023
08:39 AM
by
Highwayman9011
22
4,071
C4 Tech/Performance
Are we supposed to have two PCV valves on our L98 engines?
Rob 93ZR-1
on Dec 30, 2003
Oct 24, 2023
05:36 PM
by
Sabre34
9
10,379
C4 Tech/Performance
Hunting, fluctuating, erratic idle
(
1
2
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Jinxie
on Sep 14, 2008
Oct 5, 2023
06:26 PM
by
Sabre34
21
4,656
C4 Tech/Performance
l98?
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1
2
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weaselbeak
on Mar 23, 2012
Oct 2, 2023
01:29 PM
by
sahhas
22
8,891
C4 General Discussion
'88 L98 compression check question.
65Z01
on Apr 16, 2002
Apr 8, 2023
11:15 PM
by
Marknangela
10
6,047
C4 Tech/Performance
L98 vs LT1
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wmrobert
on Nov 19, 2002
Apr 1, 2023
07:53 AM
by
Sabre34
62
44,669
C4 Tech/Performance
L98 Nitrous install part one. (Lots of PICS)
skateparkdave
on Feb 9, 2005
Jan 16, 2023
09:26 PM
by
CorvetteRules
11
2,595
C4 Tech/Performance
85 corvette died, code 44
buzzbomb
on May 8, 2010
Dec 18, 2022
05:34 PM
by
Sabre34
14
5,786
C4 Tech/Performance
85 L98 fuel octane requirement
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1
2
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ghlkal
on Aug 27, 2005
Dec 15, 2022
05:50 PM
by
Sabre34
34
24,257
C4 General Discussion
What does it sound like when a knock sensor dies?
quickcat
on Sep 12, 2010
Oct 10, 2022
02:08 AM
by
drcook
8
2,923
C4 Tech/Performance
L-98 cast heads vs aluminum
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1
2
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samdweezel05
on Mar 12, 2009
Sep 23, 2022
03:30 PM
by
THE 383 admiral
26
27,830
C4 Tech/Performance
Sticky
***The Ultimate C4 DIY thread.... write ups w/ pics..***
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socalman
on Jul 27, 2010
Sep 22, 2022
04:30 PM
by
Dacer Spears
79
264,886
C4 General Discussion
L98 Engine Mods - What works?
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Quinny
on Jul 12, 2009
Sep 6, 2022
08:28 PM
by
ghoastrider1
99
67,101
C4 Tech/Performance
Difference between an LT1 & L98?
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MeanMachine350
on Jun 20, 2011
Aug 26, 2022
03:28 AM
by
convas
57
79,806
C4 Tech/Performance
L98 Intake Manifold Water Leaks....Common Problem???
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1
2
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Five Window
on Nov 21, 2002
Aug 9, 2022
02:56 PM
by
SpikeD33
32
10,496
C4 Tech/Performance
91 L98 Diagnoses Help: Code #43 & #46
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1
2
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DavesC4
on May 14, 2009
Jul 17, 2022
08:18 PM
by
drew915
25
4,063
C4 Tech/Performance
Best air induction on a L98
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1
2
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tnz5106
on Dec 13, 2010
Jun 22, 2022
12:19 PM
by
Sabre34
21
21,953
C4 Tech/Performance
85 L98 cam specs
snowmanmdp
on Aug 12, 2008
Jan 15, 2022
08:24 PM
by
Sabre34
5
2,443
C4 Tech/Performance
'86 L98 Stock cam specs
Five Window
on Nov 26, 2002
Jan 4, 2022
07:46 PM
by
mike1111
6
8,945
C4 Tech/Performance
Factory Oil Cooler on my 84??
(
1
2
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gregc11514
on Aug 8, 2010
Dec 24, 2021
10:22 PM
by
WVZR-1
22
8,520
C4 Tech/Performance
WTB AFR heads for l98 90 c4
Doughboy2k3
on Feb 9, 2010
Dec 19, 2021
06:02 AM
by
Starlifter
7
1,105
C4 Parts for Sale/Wanted
Some throttle body coolant bypass questions (L98)
pzoom
on Jul 15, 2002
Oct 25, 2021
01:27 AM
by
Tom400CFI
16
14,636
C4 Tech/Performance
LT1 vs ZR1 radiator, the same or different?
(
1
2
)
92KNGOHIL
on Jan 19, 2002
Oct 2, 2021
03:31 PM
by
chaley
28
5,611
C4 ZR-1 Discussion
Symptoms of bad MAF Burn-Off Module
dead_elvis_187
on Mar 13, 2012
Jul 8, 2021
01:24 PM
by
OldsMan
11
15,281
C4 Tech/Performance
zf 6speed drain plug stripped!!!
(
1
2
3
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tombrammer
on Mar 18, 2010
Jun 2, 2021
11:41 PM
by
Palanon
52
10,031
C4 Tech/Performance
exhaust smell???
(
1
2
)
bpdfs
on Feb 17, 2010
Apr 26, 2021
07:09 PM
by
rrt898
23
7,068
C4 Tech/Performance
Throttle Body Coolant Bypass
(
1
2
3
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coco1950
on Jan 10, 2009
Apr 11, 2021
12:03 AM
by
Tom400CFI
58
22,623
C4 Tech/Performance
A/C eliminate - belt length?
(
1
2
)
Z-PDX
on Sep 28, 2004
Mar 24, 2021
05:32 AM
by
Bill Chase
24
12,654
C4 Tech/Performance
Update on fuel injector / ecm problem
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1
2
3
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DMheart
on Dec 1, 2011
Mar 24, 2021
01:04 AM
by
lishars
56
10,702
C4 Tech/Performance
Bad MAF = Hesitation?
Gazpar
on Apr 21, 2010
Mar 20, 2021
08:06 PM
by
Elijah Rodriguez
6
2,488
C4 General Discussion
Let's hear your L98 heads and cam dyno numbers
neat
on May 6, 2003
Jan 20, 2021
06:00 PM
by
89onlyZ51
13
10,492
C4 Tech/Performance
Custom air pump delete bracket
(
1
2
)
1986-z51
on Dec 1, 2010
Dec 4, 2020
09:23 AM
by
Kim Neubert
24
10,328
C4 Tech/Performance
replacing injectors on 91 L98
2vettesandcounting
on Aug 6, 2009
Oct 10, 2020
07:58 PM
by
Calderone
17
11,754
C4 Tech/Performance
2.59 to 3.54 gear ratio - what are details?
(
1
2
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87Heaven
on Jul 25, 2001
Sep 2, 2020
10:55 AM
by
vette196
26
7,877
C4 Tech/Performance
L98 firing order
(
1
2
3
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ndanl
on Aug 21, 2009
Aug 31, 2020
03:28 PM
by
Louie Butler
41
36,141
C4 Tech/Performance
Worth it to port and polish stock L98 heads?
(
1
2
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jdraughn
on Mar 5, 2009
Jul 1, 2020
12:52 PM
by
vette196
25
17,972
C4 Tech/Performance
L98 383 Stroker
(
1
2
)
drumboytroy
on Apr 19, 2004
May 22, 2020
02:59 AM
by
Atapia14
29
26,260
C4 Tech/Performance
[L98] New fuel pump and still doesnt hold pressure?
FlyboyZR1
on Oct 4, 2005
May 19, 2020
10:55 AM
by
DubieDc
15
3,115
C4 Tech/Performance
Anyone running TPIS's mini ram intake on an L98?
stubbs
on Oct 15, 2002
Apr 17, 2020
07:36 PM
by
auburn2
15
25,586
C4 Tech/Performance
90 L98 Plenum and Runner Porting
90C4sRule
on Mar 15, 2011
Mar 29, 2020
01:38 AM
by
aklim
3
2,956
C4 Tech/Performance
Cheapest and Fastest C4?
(
1
2
3
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eddielb96
on Nov 10, 2004
Mar 26, 2020
11:04 AM
by
FAUEE
52
8,781
C4 Tech/Performance
L98 Head Bolts
dmyers
on Jul 14, 2005
Mar 18, 2020
11:15 PM
by
Tvette99
12
7,594
C4 Tech/Performance
My #1 is in the wrong position on the distributor, why?
(
1
2
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RED UFO
on Aug 16, 2008
Feb 13, 2020
08:37 AM
by
jbrianfoto
21
21,148
C4 Tech/Performance
Reset ECM after injector install necessary?
(
1
2
)
GKK
on Aug 15, 2008
Dec 27, 2019
06:45 PM
by
95BLKVette
23
34,441
C4 Tech/Performance
1995 Convertible LT1 Vacuum Line Routing Diagram
Freedom95
on Jun 10, 2010
Nov 19, 2019
02:13 PM
by
Ron Rankin
17
44,598
C4 Tech/Performance
L98 A/C Removal Tip
rsafier
on Feb 12, 2004
Oct 30, 2019
03:07 PM
by
CorvetteRules
16
7,036
C4 Tech/Performance
AFR Heads for stock L98
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)
l98tpi
on Sep 23, 2011
Sep 30, 2019
03:55 PM
by
Bill Chase
100
40,937
C4 Tech/Performance
Sensor on drivers side of block on my '90?
sexasomniac
on Feb 12, 2008
Sep 17, 2019
10:52 AM
by
GTO-fan
15
8,435
C4 Tech/Performance
Intake manifold leak. Common to L98?
(
1
2
)
JCAIRE2
on Sep 15, 2002
Aug 29, 2019
10:41 PM
by
PacerX
20
17,438
C4 Tech/Performance
Considering a PCMforless tune - is it worth it on a mostly stock setup?
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1
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npbassman
on Apr 18, 2012
Aug 11, 2019
08:00 AM
by
93 ragtop
79
23,151
C4 Tech/Performance
87 L98 sensor locations
daveshea
on Oct 14, 2011
Jul 29, 2019
10:53 PM
by
Tact
14
12,087
C4 Tech/Performance
head bolt torque specifications
Fredbird
on Apr 25, 2012
Jun 7, 2019
11:14 PM
by
jv9999
10
18,796
C4 Tech/Performance
89 L98 - Replaced distributor - lost correct position to re-install - help!
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1
2
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corvette95
on Jul 6, 2011
Apr 18, 2019
11:02 AM
by
21boy
40
25,400
C4 Tech/Performance
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