95batmobile

iTrader: (2)

as title says what gap should i run for a 8lb rear mount system with a stock motor with tr6

stuart4185

i run .35, which is the factory gap i believe

katz_2003

iTrader: (5)

I would run .35. Stock gap is .50 fyi

SexyTransAm

iTrader: (6)

factory gap is like .55

great421

iTrader: (1)

My set up = 0.39" gap on NGK TR6 IX plugs

stuart4185

sorry to offend the factory chevy spark gap, i was refering to the NGK tr6's factory gap is set to .35.

popo8

I run a boosted application. Anything over .030 and I blow em out....

I run .028 on a 1 degree colder plug....(colder than stock that is.)

95batmobile

iTrader: (2)

lol ok so i guess there is some play with this? .35 seems to be successful with people... will the lower the gap mean colder the burn?

95batmobile

iTrader: (2)

bumppp.. lots of different number here...

nitrous2fast

iTrader: (2)

what is your ignition setup?? that would be a large determining factor on what size gap you could run...

95batmobile

iTrader: (2)

all msd.. from the coil, wires, opti, 6al

katz_2003

iTrader: (5)

Lower the gap means less chance of spark getting blown out. Bigger gap is better but too big will blow out spark. I don't think I would go over .40 but if you wanna try anywhere around 30-38 I think you would be fine. Just check them after running it and see how they look. You will tell in how the car runs if it's blowing out the spark.

nitrous2fast

iTrader: (2)

with the msd coil and the 6AL you could do .040. instead of running the TR6's you could run the BR6ef which is a non-projected tip plug and they resist blowing out more than the projected. Br6's have the same heat range but are non-proj. also less chance of cracking the porcelain... Just a idea to ponder...