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spark plug preference

Paul G

Well-known member
Joined
Aug 27, 2001
Messages
200
Location
Griffith, IN, USA
Corvette
96 CE LT4 Convertible
Okay who likes there spark plugs?
Any one plug perform better than stock AC Delco?
What are you using?
 

BigRed

Well-known member
Joined
May 23, 2001
Messages
948
Location
Edmonton
Corvette
1985 Bright Red Rocket
Bosch Platnium +4's I noticed a difference from the NGK's that were in there when I bought the car.
 
Joined
Oct 30, 2001
Messages
2,273
Location
Glen Burnie, MD, USA
Corvette
1986 Bright Red Coupe
Also Bosche Platinum +4's. Don't know how much improvement is due to the plug itself or just the fact that it needed new plugs. $6 each isn't too bad either, IMHO - new OEM NGKs for my Legacys cost $17 each!

[RICHR]
 

vettl83

Well-known member
Joined
Apr 26, 2002
Messages
175
Location
Casper Wyoming USA
Corvette
91 L98 Quasar Blue, 91 ZR1 Red, 07 AO Coupe
Bosch platinum +4's in the 84 and the ZR-1. The only problem was they could not reference them to the AC #'s they listed them by year, model, and motor. Which means you will get the stock heat range. In other words they didn't have any choices. At least not at NAPA or Auto Zone. I'm sure they have choices if they could just figure out how to cross reference. But they do seem to work fine.
 

jeepie

Well-known member
Joined
Feb 6, 2002
Messages
162
Location
Dunmore, Pa.
Corvette
1991 Coupe Blk/Blk
I use NGK's.
 
T

tvalley641

Guest
Bosch Platinum for me. Last two cars did 80-100k w/o replacement. I changed them 'cause I just had to. Didn't need to. When I removed them they were clean as a pin. Amazing...I did not notice much gap wear!

Ted
 

Trance_LT4

Well-known member
Joined
Dec 11, 2001
Messages
140
Location
Suffolk, VA
Corvette
Red 96 LT4 coupe
I use the AC Delco at the moment, but I'm looking into a nitrous-oxide setup and I'll need some non-platinum plugs for that. Does anyone have any suggestions for non-platinum (autolite perhaps)?
 
V

vetsvette

Guest
Why non-platinum for N2O? I have +4's in mine and don't plan to change for a 100hp shot. It will be running NA for 99% of the time and don't see the need to change for 1% ofthe time.
 

Trance_LT4

Well-known member
Joined
Dec 11, 2001
Messages
140
Location
Suffolk, VA
Corvette
Red 96 LT4 coupe
Most of the Nitrous Companies, and Nitrous Racers that I talk to say non-platinum plugs are a must. The two reasons I got (and I don't know which is more true) was #1 the platinum likes to flake off with N2O use #2 it makes "reading" the plugs harder for nitrous tuning. At any rate, the company I'm going with (Nitrous Xpress) says non-platinum.
 

fastglass95

Well-known member
Joined
Jan 27, 2001
Messages
208
Location
St. Peters, MO.
Corvette
1996 LT4 coupe + 2004 Z06 Z16
Trance_LT4 said:
I use the AC Delco at the moment, but I'm looking into a nitrous-oxide setup and I'll need some non-platinum plugs for that. Does anyone have any suggestions for non-platinum (autolite perhaps)?

Try "NGK TR55" plugs, they are copper, not platinum.
NGK also has a platinum tipped plug numbered TR55?? it has two letters after the 55, it's the one the auto parts store will try to sell you. You must ask for the TR55 by name.
 

Topless

Well-known member
Joined
Nov 12, 2001
Messages
444
Location
San Diego, CA
Corvette
1992 Convt w/hard top; 2004 Z06 Z16; 1962 327/300
What about wires?

I am needing this service on mine (plugs and wires).

So far Bosch platinum +4's seem to be the leading the votes around here. Any ignition noise problems??

MIke
 

vettl83

Well-known member
Joined
Apr 26, 2002
Messages
175
Location
Casper Wyoming USA
Corvette
91 L98 Quasar Blue, 91 ZR1 Red, 07 AO Coupe
Plug wires

Topless, for spark plug wires the TPIS wires get my vote, but there are other good ones out there. You can check them out at www.tpis.com
 

Topless

Well-known member
Joined
Nov 12, 2001
Messages
444
Location
San Diego, CA
Corvette
1992 Convt w/hard top; 2004 Z06 Z16; 1962 327/300
Thanks. I will check it out.

MIke
 

redc4corvette

Well-known member
Joined
Oct 25, 2003
Messages
478
Location
Hawaii,Maui,Lahaina
Corvette
1994 Red vert 1986 Blue Silver vette coupe
:r I use tr6 ngk in my 1994 conv with nos 75 shot set at 35 ths
its ok for the drags but it causes a slight mis fire when cold
in am.
mods msd 6al ign spark retard barry grant nos plate and bottles
25 lb
air foil hyperteck trans and rear tuning.
( no engine tuning with hyper puke it will dust your motor on nos )
nitto DR 11" zr1 wheel auto 4l60e trans.
throttle body by pass
12:528 1.934 60 foot 111.33 1/4
the car goes side ways most of the time its the nature of the beast good luck!
:_rock
 

redc4corvette

Well-known member
Joined
Oct 25, 2003
Messages
478
Location
Hawaii,Maui,Lahaina
Corvette
1994 Red vert 1986 Blue Silver vette coupe
Re: Plug wires

vettl83 said:
Topless, for spark plug wires the TPIS wires get my vote, but there are other good ones out there. You can check them out at www.tpis.com



with nos you need a steel plug so it does not ping!!!!
plat burns to hot and after burn with nos will cause a ping
I use msd 8.5 plug wires they fit in the looms.:CAC
 
Joined
Apr 7, 2003
Messages
315
Location
Guadalajara, Mx.
Corvette
1996 LT4 Supercharged and 2002 Z06 656 whp
redc4corvette said:
:r I use tr6 ngk in my 1994 conv with nos 75 shot set at 35 ths
its ok for the drags but it causes a slight mis fire when cold
in am.
mods msd 6al ign spark retard barry grant nos plate and bottles
25 lb
air foil hyperteck trans and rear tuning.
( no engine tuning with hyper puke it will dust your motor on nos )
nitto DR 11" zr1 wheel auto 4l60e trans.
throttle body by pass
12:528 1.934 60 foot 111.33 1/4
the car goes side ways most of the time its the nature of the beast good luck!
:_rock

Hey red,

What are your times without the shots? (just want to know what could I expect with a 75 shot)
 

redc4corvette

Well-known member
Joined
Oct 25, 2003
Messages
478
Location
Hawaii,Maui,Lahaina
Corvette
1994 Red vert 1986 Blue Silver vette coupe
vettered91 said:
Hey red,

What are your times without the shots? (just want to know what could I expect with a 75 shot)
:v
1994 corvette stock no mods at all
13:846
60ft 2.042
95.13
and
100.21 top speed
with mods
k&n filter
air foil
nitto drag 17 by11
nos fuel addative
msd 6al
new coil new water pump & opti-spark
retard advanced 7 deg
msd retard advance unit
the claw k&n
81degrees humity at 79%
tr6 plugs
no juice
13.485
2.038
102.49
13.53
2.300
13.531
105.11
and with the tires you have to do a 10 minute burn out even stock or the car will go side ways
at the track everyone says i should have a trophy for going side ways all the time.
I have a vigalante torque converter for the car but havent put it in
the mang of the track is putting in the roll bar he said at 13:99
it should have been installed.
 

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