is the AUTOLITE brand spark plug any good for nitrous?
i hear everybody runnig the NGK tr6's but nothing about autolite.
Thanks for the help
oh yea the Autolite 103's

 

I dont know about the autolite, but i use the NGK's in my T/A.
Whatever you do, DO NOT use the stock GM plugs if you are going to use nitrous.

 

I've seen the 103's used at 200+ jetting and they always looked great. goodluck

 

do you have an O'Reillys auto parts store close to you? if you do then go there and get the NGK plugs for 1.99 a piece and they come with a one year warranty and just take the old ones back and get the new ones when needed.

 

Autolites are a nice plug. Nothing wrong with them at all.

Nick

 

i ran a NGK tr6 until i went to a 200 shot. now im running a Autolite AR-93.

 

if the tr6 plug is comparable to the auto lite 103 then if your using a tr7 plug what auto lite number would be comparable?????

 

They really don't have much in that heat range. The next step up would be a AR474.

Nick

 

Ar472

 

so the 103's are the correct plug right?
im running a 100 wet shot

 

Yes they will be fine on that size shot.

Nick

 

Will the TR6's be ok for a 150 Wet Plate kit?

 

Yep, the TR6`s will work great N/A and with the 150 shot.

 

Autolite 103 = NGK TR6 - 1 step colder
Autolite AR94 = NGK TR7 - 2 step colder
Autolite AR93 = NGK ? - 3 step colder

LS1 Stock and AFR
Thread – 14mm
Reach - .708”
Socket – 5/8 hex
Seat - Taper
Stock Heat Range: 5
Gap: .060
Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Autolite 764; Denso IT-16 (stock number 5325)

Nitrous (one step colder)
Heat Range: 6
Gap: .035 - .038
Plug: NGK TR6 (stock number 4177); NGK TR6IX (stock number 3689); Autolite 103; Denso IT-20 (stock number 5326)

Nitrous (two steps colder)
Heat Range: 7
Gap: Consult
Plug: NGK BR7EF (stock number 3346); NGK TR7IX (stock number 3690); Autolite AR94; Denso IT22 (stock number 5327)

Nitrous (two and a half steps colder)
Heat Range: 8
Gap: Consult
Plug: NGK R5724-8 (stock number 7317); NGK TR8IX (part number 3691); Denso IT-24 (stock number 5328)

Nitrous (three steps colder)
Heat Range: 9
Gap: Consult
Plug: NGK R5724-9 (stock number 7891); Autolite AR93; Denso IT-27

Nitrous (four steps colder)
Heat Range: 10
Gap: Consult
Plug: NGK R5724-10 (stock number 7993); Autolite AR92