DopdBrd

iTrader: (25)

So I am about ready to start putting the motor together and need to figure out what plugs to use.

The motor is a TFS Headed 383 and will be seeing a 150 - 200 shot on it by next spring.

I was thinking the TR8's but didn't know for sure. Also, I will be driving on these for awhile with no spray. Will that be ok?

ShiznityZ28

iTrader: (11)

9's on the motor and 150 or less 10's on more. get the tune right and you might be able to move down but i bet it does not help so you will stay with the colder plug.

jmm98LS1

iTrader: (28)

I'm running NGK 8's on mine (12:1 SCR) both n/a and 200 shot. Runs the same mph N/A with TR6's and the 8's, they've seen 1000 street miles and are just fine.