changing plug wires
06-05-2008, 05:05 PM
#1
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Engine: 5.7L
Transmission: 700R4
changing plug wires
Stock 1988 IROC 5.7...how much of a PITA is it? Do I need to work from underneath with the car on ramps? I can't see where the wires go from the top so I'm assuming I do. How are the cylinders numbered on a Chevy V8? I've done this job with other cars I've had (TR6, Jag V-12, Chrysler 383) but never this one...thanks in advance!
06-05-2008, 05:09 PM
#2
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The cylinder numbering doesn't matter that much. Start with the longest wire, replace them one at a time.
But, for the record, when looking at the engine from the front of the car, the cylinders to your right are the odd numbers, #1 being closest, #7 farthest away; and similarly the evens on your left, #2 being closest, #8 farthest away.
But, for the record, when looking at the engine from the front of the car, the cylinders to your right are the odd numbers, #1 being closest, #7 farthest away; and similarly the evens on your left, #2 being closest, #8 farthest away.
06-05-2008, 05:21 PM
#3
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Car: 1991 z28
Engine: L98 TPI
Transmission: Built 700R4
Axle/Gears: 3.23 posi
Re: changing plug wires
#7 and #8 are tons easier from underneath, the rest are just a pain. 
wanna do mine next? :P
wanna do mine next? :P 
06-05-2008, 05:40 PM
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Car: 1991 RS, 84 El Camino conquista RIP
Engine: 5.0 (for now)
Transmission: 4L60
Axle/Gears: 2.xx torsen limited slip & 3.42 ope
Re: changing plug wires
I suggest 8.5mm universal set from pep boys. Then go one by one from the longest. use the proper lube for the boot and I suggest checking replacing cap rotor. Also a can of wire dyer for extra insurance. Wires are not that bad, just feel for the spark plugs that's all.
06-06-2008, 09:23 AM
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Car: 92RS 25th Anniv./88 IROC Z28 Vert
Engine: 305 TBI w/Tpi Air / 305 TPI
Transmission: 700r4/700r4
Axle/Gears: Posi
Re: changing plug wires
I just switched over to MSD last week and I love it. I had OEM wires and plugs still in after 144,000. A big difference. I suggest you change your plugs at the same time. The back (by the firewall) will be the hardest and will probably be easiest if done from underneath. make sure you have a swivel if changing plugs.
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