I used TR55's long ago n/a, TR6's with n2o. I put some worked stock heads milled .050" with a .040 gasket to get 10.60:1 out of it, and used a BR6EF non projected plugs for the 100 shot. I am running n/a for a while, and wondered what you guys run now? I was thinking TR55's again. whats the deal on the TR5's?
thanks

 

TR5 and TR55 are the same plug, just with different gaps set from the factory.

 

ahh, what can you get them for? you still work for oriellys?

 

tr55 should be good

 

I run the TR5's NGK's run about $25ish or so from oreillys...

 

Tr55 here. For na and spray lol!

 

I ran tr5, tr55, and stock iridiums on my old 4.8. It was 58cc with a .04 headgasket. I noticed no real difference between the 3 except the iridiums idled better

I run tr55s gapped at .055 in my lq9

 

haha they're already like 1.25 each.

 

$2.49 ea, but my price is similar to what you were thinking david. But the discount would be negligible since the drive would cost more in gas money than what the savings would be.

 

drive up to denton? I have ways of getting there for free. I will text ya...