I want to change my spark plugs & spark plug wires for my 92 RS (305 TBI) this weekend but I am not sure which type wires to get. I want to get the bosch platinum +4 spark plugs and the Moroso Blue Max 8 mm spiral core spark plug wires. My question is do I buy the 8mm custom fit wires or the 8mm universal fit wires w/ 90* boots? Can someone please advise.

Thx!

 

I would go with the Moroso plugs, but don't waste your money on those spark plugs. They're useless. The only advantage of platinum is they will last longer, but the traditional kind will provide a better spark. At least this is what I have been told.

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"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat, just switched to 180* b/c of winter coming and going to college in the mts.
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite

 

Get the 90* boots, but if you go with the universal fit, you will have to cut the wires to a certain length and put the boots on yourself and crimp them. Custom fit matches to your vehicle/engine code and are put together already.

------------------
"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat, just switched to 180* b/c of winter coming and going to college in the mts.
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite

 

Thanks Mark, I will order the Moroso 8mm custom fit. I will just make sure that they have the 90* boots. As for the spark plugs, which brand do you recomend?

 

You're not going to notice a big difference in spark plugs. Some people just use the good ole AC delco ones, I usually buy autolite ones though. I'm no expert though. You might want to try and search the archives about spark plugs if no one else replies.

------------------
"Rice burners are like tampons...Every pu$$y has to have one"
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
3" Hooker CatBack w/Aero Chamber muffler
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat, just switched to 180* b/c of winter coming and going to college in the mts.
3:73 Posi
Rebuilt 700R4
B&M Megashifter, 5" Autometer Tach w/shift lite

 

The MSD 8.5mm wires are the best; I recommend those. If you get MSD ignition and a coil, get regular AC Delco plugs and gap 'em a little more.

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1992 Camaro RS (Auto) 5.0L TBI
-
Performance mods
NOS (125 HP shot), Dynomax cat-back exhaust, Hedman headers, no cat, custom high beam delete ram air w/ K&N, MSD 6A ignition, MSD 8.5mm plug wires, LT1 camshaft
Soon to be installed:
Edelbrock Perfomer TBI intake, B & M 2200 RPM stall torque converter, Trans Go shift kit, World Products Torquer heads, Ed Wright Fast Chip

Audio
Sony Xplod CDX-M610 head unit, Pioneer 2-way 4x6 front speakers, Pioneer 3-way 6x9 rear speakers, 12 inch Pioneer VCCS PRO subwoofer, QLogic sealed box, Kicker ZR360 amplifier, Lightning Audio 1 farad capacitor

Other
Macewen White Faced Gauges/Shift overlay, A-pillar gauges (Phantom oil pressure, Air/Fuel), 180* thermostat, Window Tint, chrome valve covers, xenon headlights

 

I got moroso blue max custom wires but I wish I had got universal. the custom set really sucks, the wires do not really have much of a logical length. one of the wires had to be tight against the exhaust manifold to go on the plug(the #8 wire). I'd go with universal. I'm running platinum +4s, but don't really notice any difference. I'm getting plain platinums next time.

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'86 IROC 5-speed
305 LG4
edelbrock performer rpm intake
edelbrock 600 cfm carb
msd pro billet hei distributer
'95 3.23 rearend
hotchkis rear suspension
PST front polygraphite suspension
"speed kills. buy a f@&d, live forever."

 

I guess I'll go against the group. 8mm wires are plenty for most street cars. I just put 8mm Accel yellow wires and I got straight boot universal fit. The 90 degree boots that were on my car put the wires either into the exhaust or the hot air tubes. I bought chrome 4-3-2-1 wire looms made for side bolt valve covers, 1 small bend in the mounting tabs and they fit the center bolt covers perfectly. Now my wires stand out against the black engine and run nice and straight across the valve covers. The straight boots let the wires stand away from all the hot parts.

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'92 firebird t-tops
305tbi,670cfm tbi, 2 1/2" Dynomax catback, 9x3 K&N open element

 

The best spark plugs I have ever used are the regular Bosch Platinums. (I have not used the 4 prong Bosches.) No kidding, your car will just run smoother. They are that good and they don't cost much more than regular AC Delcos.

 

Just wanted to thank everyone for their input, I really appreciate them.

 

I run Taylor spirl pro and regular old AC's