Hey Im in the process of installing Hooker LTs (2210) on my 88 firebird with AFR 195 heads and am running a NX 100-150 shot with NGK TR6 sparks plugs. My question is does anyone sell shorter TR6 plugs? I am having clearance issues with the #7 primary tube and cant get the plug started. Ive read that a shorter plug is the way to go however who sells shorter TR6s?

 

what plugs are the reccomended ones for the AFR's in your application.....the AFR's for my car use a totally different style plug the the NGK-TR6

 

Where would i be able to find out what plugs are reccomended? I have run the TR6s for a while on the 100 shot and have seem to run well. However i need a shorter plug now so it wont interfere with the LTs.

 

Have you been using the TR6's on the AFR's? like Ray stated, every set of AFR's that I have ran into take a completely different plug.

 

yes ive been using the TR6s with the AFRs for a while now. Do i have to call AFR for my application? Are most plugs made in the shorter stlye as well?

 

this is copied form the spark plug sticky above...

LT1 w/ AFR heads
Thread – 14mm
Reach – 3/4”
Socket – 5/8 hex
Seat – Gasket
Stock – MFG Recommendations
Heat Range: 9
Gap: Consult ignition mfg.
Plug: NGK 5672A-9 (stock number 7405); Autolite AR3910; Champion C59YC (stock number 792); Denso IQ27 (stock number 5315); Denso IQ01-27 (stock number 5708)(diagonal platinum ground); Denso IQ02-27 (stock number 5711)(horizontal platinum ground)

Nitrous (one step colder)
Heat Range: 10
Gap: Consult ignition mfg.
Plug: NGK 5672A-10 (stock number 7942); Autolite AR50; Denso IQ31 (stock number 5323)

Nitrous (two steps colder)
Heat Range: 11
Gap: Consult ignition mfg.
Plug: Denso IQ34 (stock number 5324)


I am running the 1 step colder NGK ...I would call AFR to verify

 

Thanks Ray, I see that Accel makes a shorty style race plug however their heat ranges are different then NGKs. How would I be able to cross reference the Accels to the NGKs? It looks like I need to run a plug the heat range of 10 on NGKs scale.