View Full Version : what are best plugs to use??????????
496 bbc with dart iron heads what are best plugs to use?
cepx111
06-26-2009, 08:22 PM
I run NGK racing plug #8 on my 496BBC W/cast iron merlin heads gapped at .032
Cp
tcarda
06-27-2009, 06:04 AM
I have used NGK and Autolites and both have never failed for me, but I prefer the Autolites.
hammertime
06-27-2009, 06:15 AM
Champions here
thanks for the replies i went ahead and got some autolites
lanham
06-27-2009, 04:38 PM
I like NGK plugs.
TNMAN
06-28-2009, 01:11 PM
Autolites here 2
Scooterz
06-28-2009, 04:16 PM
I used NGK & converted to same heat range to Bosch Platnum. Works great!!
chevyfireball
06-29-2009, 04:39 AM
NGK's are easier to read.
FullTimeRacing
06-30-2009, 09:03 AM
Autolite made in the USA
cepx111
06-30-2009, 10:04 PM
Autolite made in the USA
Good point, my next set are going to be autolights.
Cp
hammertime
07-01-2009, 04:42 AM
I did a test a few years back autolites, ngk's, accel, champions
On my 548/alky carb the ngk's were flat SLOW compared to the others.
suicidebomb
07-01-2009, 07:06 AM
Check this out, I got a set of brodix track 1s on my junk. They reccomend NGKs, so thats what I ran. then one day i decided to try a different plug, so i gets a set of autolites, supposed to be a direct replacement. I can screw the NGKs in by hand all the way to the gasket, the autolites would only screw in about two turns and stop, in every hole. The thread size, looks identical, but AINT. I'm not cross threading or anything else, they just won't screw in, and I aint going to push the issue. sure as the world if I do i'll strip those heads.
Scooterz
07-01-2009, 11:06 AM
I don't care who you are... thats not a good story. Bad threads going into aluminum is like 3 peckered billy goat ina one-legged butt kickin' fight... somethin' bad is gonna happen.