has anyone ever used these plugs and what did you think of them? i need shorty plugs to clear my headers.


Brian

 

They are not very good. There is very little surface area to wear, so the gap opens up very quickly. A friend tried them 10-12 years ago, threw them out after 4 months....

 

I really like them but they don't last very long. In my application they performed better than Rapidfires, at least according to ye ole butt dyno.

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1985 ASCD Ram Air Trans Am
http://www.execpc.com/~karpsta/home.html
to find out more
Proud member of Icon Motorsports

 

Yeah i have used two sets or the u grooves, i was satisfied, but the first set only last bout 6 months, then i put the new set in and what a power difference, its abou time for a new set i think. Im not sure what i am gonna go towards, but those cheap autolites sounding pretty good, b/b thats all the poeple at the track run so........thats what im gonna run

 

I used them because I needed shorties for header clearance. That engine burned some oil (qt/800 miles), so they carboned up some, but I ran them for over a year with no wear problems. I couldn't say the helped or reduced performance, they just worked better than cooked wire boots.

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82 Berlinetta, orig V-6 car. Rescued w/86 LG4/TH700R with all harnesses, sensors, ECM, etc. 3.08 open, cat-back from '90 305HO, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress.
57 Bel Air, my 1st car. Currently 396 .030 over, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & shift kit, 3.08 10-bolt, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

 

I'm using them right now with my headers. They have about 400 miles on them and I've had no problems with them. They still look fine. I can't say they perform better or worse because I also got a Holley ignition box and coil at the same time. Maybe if I get a thousand miles on them I will be able to get a better idea of how well they hold up.

 

I had the u-grooves in my car and they are just spark plugs. Anyone who says that you can get >2 horse from a trick plug has no idea what they are talking about. As far as plugs go get platinums. They last longer than a non-plated.

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82 z28 350cid, vortec heads, comp 262h cam, Holley 600cfm carb, 2in twice pipes, MSD ignition, turbo 350 trans, 3.73 posi

 

I'm currently running those with my headers for clearance reasons, plus I figured I would give them a try. My ignition is all stock except for the wires and plugs, but they seem to work well. I've had them in for over a year now and they perform just as well as they did when I put them in.

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'92 RS convertible with 305/700r4, slp headers, 3" high flow cat, 3" flowmaster w/2.5" outlets/hypertech chip, k&n open element, "modified" eibach springs, kyb shocks&struts, and polygraphite bushings.

 

when it comes to power from plugs, they have to be the propper heat range for your aplication, (i donot know how to determin so i stick w/ stock) and i change th eplugs often, they are ez and cheep i use ac r45ts (i believe thats the num) w/ msd 6a and accel coil i gapem @ 45

-Stell

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1988 IROC 305TPI MINT!!
Mods= Accell SuperCoil, MSD 6A, Ported Plenum, No MAF Screans , K & N, 160 Thermostat+ Temp Switch
And Always Trying To Go Faster