Best plugs and wires for 98 Trans Am
#6
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I like the TR55s or the AC Delco Iridiums. I'm using both of these right now and am happy with both. The TR55s are cheaper, but won't last as long.
Due to the high powered ignition and short distance between the coils and plugs, I've never seen any improvements from aftermarket wires on these engines.
#7
This is what I see on NGKs site so what are TR55s?
2000 PONTIAC FIREBIRD FORMULA 5.7 V8 G FI
Spark Plug
Part No.
Stock No.
Plug Gap
Photo
V-Power TR5
2238
.040
G-Power TR5GP
3186
.040
Laser Platinum PTR5D-10 *
3784
.040
OE Laser Iridium IZTR5B11 ^
1465
.040
Iridium IX TR5IX
7397
.040
* “Laser Series” Platinum center electrode, and Platinum pad ground electrode
2000 PONTIAC FIREBIRD FORMULA 5.7 V8 G FI
Spark Plug
Part No.
Stock No.
Plug Gap
Photo
V-Power TR5
2238
.040
G-Power TR5GP
3186
.040
Laser Platinum PTR5D-10 *
3784
.040
OE Laser Iridium IZTR5B11 ^
1465
.040
Iridium IX TR5IX
7397
.040
* “Laser Series” Platinum center electrode, and Platinum pad ground electrode
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#8
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TR55s are the same heat range plug as the TR5s, but they come with a larger gap (.059"), closer to the original plug gap for these engines.
They are stock #3951. They will fit any LS1 engine. I've had them in 806, 853, and 241 heads.
They are stock #3951. They will fit any LS1 engine. I've had them in 806, 853, and 241 heads.
#9
o got my Tr55 plugs at Oreillys... they didnt come up for my 98 TA... they came up on accident when the counter guy when he searched pontiac "Trans Port" minivan... same part number 3951 and everything
#14
TECH Fanatic
iTrader: (3)
This is what I see on NGKs site so what are TR55s?
2000 PONTIAC FIREBIRD FORMULA 5.7 V8 G FI
Spark Plug
Part No.
Stock No.
Plug Gap
Photo
V-Power TR5
2238
.040
G-Power TR5GP
3186
.040
Laser Platinum PTR5D-10 *
3784
.040
OE Laser Iridium IZTR5B11 ^
1465
.040
Iridium IX TR5IX
7397
.040
* “Laser Series” Platinum center electrode, and Platinum pad ground electrode
2000 PONTIAC FIREBIRD FORMULA 5.7 V8 G FI
Spark Plug
Part No.
Stock No.
Plug Gap
Photo
V-Power TR5
2238
.040
G-Power TR5GP
3186
.040
Laser Platinum PTR5D-10 *
3784
.040
OE Laser Iridium IZTR5B11 ^
1465
.040
Iridium IX TR5IX
7397
.040
* “Laser Series” Platinum center electrode, and Platinum pad ground electrode
#16
TECH Fanatic
Without forced induction or nitrous I'd go Delco plugs for sure, and last time I did a tuneup I found 8 LS3 wires removed when they were brand new for like 20-30 bucks on Ebay. Couldnt pass it up.