spark plugs

[Chris94L]

Plan on getting some new plugs for the truck tomorrow. The Autolite 764 have a pretty good amount of use on them so I want to get them changed before Friday. It is mostly stock, with a 125 shot. Should I get NGK TR5 plugs (stock heat range), or NGK TR6 which are one range colder?

[WA 2 FST]

When I had my '94 L and was running a 7-8psi Vortech supercharger, I would run one range colder than stock (Autolite 763 or Motorcraft AWSF-22). Gap 'em at .035-.038. If you have a good ignition (I had an MSD coil and 6AL ignition box), you will have no fouling issues. If your ignition is stock, I don't know... it will probably be fine.

The stock GT-40 iron heads tend to develop "hot spots" in the chambers pretty easily, so a colder plug when running a blower or nitrous is a wise choice.

[Chris94L]

Well I put the TR6 in today so will see how she likes em.

[mustgofaster]

Well I put the TR6 in today so will see how she likes em.

Let us know how she likes em'. Copper Autolites have always been my favorite, but I've been thinking of giving those a try.

[Chris94L]

Let us know how she likes em'. Copper Autolites have always been my favorite, but I've been thinking of giving those a try.
they were something only like $.30/ea more than the autolites I usually use are so I figured I would give them a try.

[TxStVanWilder]

i run the NGK TR6 in my truck and i run a 100ish shot...

one thing i have noticed though is that they dont last a whole lot of time

i make sure i change mine before i have a race coming up or atleast every couple oil changes.... its just better safe then sorry IMO... i usually change them out way before they are do.... but for $10-$12 a set it never hurts...

[99WhiteBeast]

I run the Champion RC9YC (344) - but have no adders and AFR185's with MSD

[TXLIGHTNING]

I run the Champion RC9YC (344) - but have no adders and AFR185's with MSD Man I loved my AFR 185cc heads I had on my 93 stroked and SC Mustang. Those are some damn good heads bro :tu: