97TA-WS6-Con
01-25-2003, 07:33 PM
Those of you running a blown motor with AFR heads. What plugs are you using?
I HAD been using the NGK TR6's on my LT1 heads but AFR says that I need a gasket. The TR6's do NOT have a gasket.
When I bought the heads they came with some NGK plugs that DO have a gasket.
The model number is "BCPR6E - 11" and are *gasp* "for imports"
Can anyone give me some idea if these plugs are the right ones to use, and if not, which ones.
Willie
01-25-2003, 09:03 PM
Well, I don't know anything about the plugs you mention, but I use Autolite 3923's with my 190's. They are three ranges colder than the "normal" heat range, a 3926. They seem to work well for me.
Highlander
01-26-2003, 10:38 PM
I am using ngk bpr7es which are one range colder plugs...
Camaro_SS/R
01-27-2003, 12:24 PM
I have the AFR heads and have been running with the TR6 for 3 years with no problems. ?
cheers
yellow Z28
01-27-2003, 09:52 PM
same here, im use the TR6's in my car and they work great, have had alot better luck with these over the autolites
97TA-WS6-Con
01-28-2003, 12:06 AM
Do you guys running the TR6's have any kind of gasket with them?
NGK sent me an email saying the ones I have would be fine but to gap them to .350 which I was going to do anyway.
Camaro_SS/R
01-28-2003, 01:09 PM
no. Don't ever remember seeing a gasket for the TR6 with the AFR heads.
--Hugh
97TA-WS6-Con
01-28-2003, 03:48 PM
Well it was AFR that said I should have gaskets and they recomended Autolites, but the heads came with these NGK plugs and it looks like they will work.
*shrug*
Thanks for the response guys.
engineermike
01-28-2003, 06:08 PM
The AFR heads are machined for a gasket seat plug. The area around the threads is machined flat for the gasket to seat. This is common in aftermarket aluminim heads. I use A/C FR3LS, but the Autolite 3924 / 4 / 5's will work.
The stock heads are machined for taper seat plugs. The area around the threads is machined with a taper for the plug to seal against.
Mike