KilerTA

iTrader: (70)

Im getting ready to put ina set of NGK V-Power pulgs and i hear that there is a lot of dispute on what i should gape them .50 or .55 and if you go ither way and why.....

2001whiteSS6spd

I gapped my NGK tr55 v-power plugs at .055 on the ss, the car seems to be running alot better than the factory plugs(car has 30k miles). I also changed wires to MSD 8.5mm wires. I gapped them at .055 because thats the factory setting.

Marc '99T/A

iTrader: (22)

I just did mine also. I was trying to figure out the same thing, and ended up gapping them right in the middle; at around .053

camaross305

iTrader: (9)

i did mine at .50...i think anywhere from .50-.55 is fine

TheBlurLS1

iTrader: (8)

I did the same, and believe the same is true

The actual gap is .050-.055" I don't think i want a 1/2" plug gap, need a lightning generator to ark that badboy. We would be asking questions about PTP (plug to piston) clearance

I read somewhere that NA applications need to close the gap .005 for every 50-100hp over stock or somthing like that. Someone else chime in who knows somthing about this.

RPM WS6

iTrader: (3)

Stock gap is .060.

I've tried gaps everywhere from .050 to .060 with the TR55s and seen no real changes so I usually just split the difference and go .055.

408Maro

iTrader: (14)

so 50-55 would be ok for also the 55gp plugs as well?

X-JeSSter

iTrader: (1)

Are these plugs all gapped identically? I checked the gap on a few when I bought them at Advance auto, and they seemed to be gapped at .055 - I probably should check the gap on every one to be safe though, right?

408Maro

iTrader: (14)

thats what i always do just to be safe you know i just checked mine 7/8 were at 55 one was at 60 so you never know

rtr2001ss

iTrader: (2)

So would those same 55's gapped at .055" be good for a stock aluminum 5.3L on my truck?

408Maro

iTrader: (14)

i would think it would since its still a gen III engine,but im not no pro