Can I run NGK TR6's in stock n/a motor?

danman · 05-19-2006, 11:39 AM

I have an extra set of NGK TR6's in the garage and I am doing a plug and wire swap on a buddy's car tomorrow. It has lid and Borla. Can I still run the TR6's with it n/a? I know most people run the TR55's.

Would it hurt performance?

**Mr. Luos** · 05-19-2006, 06:46 PM

Yes you can.

Originally Posted by danman

Would it hurt performance?

Minimal. But I would say it is too cold of a plug for a stock LS1.

**SLOW346** · 05-19-2006, 11:49 PM

Yeah, it'll hurt performance. I'd just spend $15 and buy the right plugs. It wouldn't kill you to run the TR6's, but wouldn't be a great idea either.

**1fastcamarosss11** · 05-19-2006, 11:56 PM

Originally Posted by danman

I have an extra set of NGK TR6's in the garage and I am doing a plug and wire swap on a buddy's car tomorrow. It has lid and Borla. Can I still run the TR6's with it n/a? I know most people run the TR55's.

Would it hurt performance?

you plan on running nos? if so use them. if not may want to rethink it.

**gillbot** · 05-20-2006, 05:14 AM

I've heard if you have a fairly aggressive NA cam, you might want to go to the colder plug. Any thoughts on this as I've been considering doing that myself for my TR230 cam.

**Mr. Luos** · 05-20-2006, 06:06 AM

Originally Posted by gillbot

I've heard if you have a fairly aggressive NA cam, you might want to go to the colder plug. Any thoughts on this as I've been considering doing that myself for my TR230 cam.

I am running TR55's in my LARGE cammed 402 (11:1 compression).
Might try the TR6's here soon enough.

Currently no problems with the TR55's.

**gillbot** · 05-20-2006, 06:12 AM

I ahven't heard of problems with people running 55's but I have heard of smoother operation and better performance after going to 6's. I was just curious.

**Mr. Luos** · 05-20-2006, 06:31 AM

General rule of thumb...
Boosted and bottled cars get TR6's.
NA cars get TR55's. This can change for heavily modded motors.

danman · 05-20-2006, 06:41 AM

I can't find any TR6 plugs in town. What other brand do you all recommend?

**Mr. Luos** · 05-20-2006, 06:43 AM

Do you have to change them right now??
If not...byunspeed, thunder, TSP
Most of LS1's sponsors can have them to you by the end of the week.

Why the TR6?

danman · 05-20-2006, 07:10 AM

I had a 2000 WS6 with nitrous and I had those left over. The only reason I asked is that I only used the nitrous 5% of the time. The other 95% was N/A and the TR6's ran just fine in that car.

**SLOW346** · 05-20-2006, 12:23 PM

Originally Posted by danman

I can't find any TR6 plugs in town. What other brand do you all recommend?

What about the TR55's? You want a hotter plug in your car unless you are running N2O or have real high compression. You want a more complete burn in the combustion chamber. Some might say TR6's FEEL smooth in their cars, but they will still not perform like the hotter TR55's will.

**SLOW346** · 05-20-2006, 12:25 PM

Originally Posted by gillbot

I've heard if you have a fairly aggressive NA cam, you might want to go to the colder plug. Any thoughts on this as I've been considering doing that myself for my TR230 cam.

A fairly aggressive cam won't require a different plug. It's when you mill your heads and run real high compression that you MIGHT need a colder plug.

**Mr. Luos** · 05-20-2006, 01:09 PM

What do you consider real high compression??

**gillbot** · 05-20-2006, 07:50 PM

Originally Posted by SLOW346

A fairly aggressive cam won't require a different plug. It's when you mill your heads and run real high compression that you MIGHT need a colder plug.

Changing a camshaft will increase dynamic compression though.

**viper99ta** · 05-21-2006, 03:50 AM

Good questions. I know there is a lot of buzz on ls1tech about them with H/C cars. I'm running TR5's right now ( same as TR55 but come gapped at .039 ) but thought about going to a TR6 gapped at .038. I'm 11:1 right now.