[Grunow]

First, nice to meet u everyone

I bought 2014 gt500 with some mods 2 years ago but there's no information here in my area because this my car is the only one here!!! So I'd like to be taught by this forum.

One of my friend who works for repair shop informed me to check plug gap for more performance...but you know i have no idea at all.

My car was ecu-tuned by moor automotive with 2.4 pully / 65mm throttle body / bbk longtube headers / TR8IX spark plug / etc...

With considering those spec' , who can recommand the best plug gap and anything else?


Thanks in advance to everyone

 

[Goose17]

First, nice to meet u everyone

I bought 2014 gt500 with some mods 2 years ago but there's no information here in my area because this my car is the only one here!!! So I'd like to be taught by this forum.

One of my friend who works for repair shop informed me to check plug gap for more performance...but you know i have no idea at all.

My car was ecu-tuned by moor automotive with 2.4 pully / 65mm throttle body / bbk longtube headers / TR8IX spark plug / etc...

With considering those spec' , who can recommand the best plug gap and anything else?


Thanks in advance to everyone

Welcome to the forum!

Someone will hopefully have some gap advice for you. In the meantime, if you are up for introducing yourself and showing us your ride, you’ll find our new member area here:

New Member Introductions

Introduce yourself and show us your ride!

www.fordgt500.com

 

[Catmonkey]

.028" should be fine. The 8 series may be too cold a plug. Most guys use the 7IX for high boost on pump gas.

 

[PM-Performance]

TR7Ix as stated above is fine. I gap to .026, but a little bigger is fine too. Too big and spark blows out with higher boost. Too small and maybe the plugs dont last as long.
Its not really a deterimental thing to try diff things out and see what works for you. but both suggestions given are pretty much common practice

 

[ihaterice]

+3

 

[KodiakMustang]

OP, Here's a good post by BJ back when he worked for VMP in 2016. VMP used to have the same/similar 101 guide on their web site, but even though it's still listed in their Written Guides section, the link doesn't work anymore.

I realize he and VMP don't have a recommendation that includes the plug you had a question about, but that's likely for a very good reason....as has already been mentioned.

Spark Plugs 101

Proper heat range and gap are important to the performance and safety of your car. They're also some of the most mis-quoted and incorrectly referenced pieces of information on automotive forums. That said, here is the VMP Performance guide to spark plugs for 2007-2014 Ford Shelby GT500s. 1...

www.fordgt500.com

 

[Catmonkey]

8's are 2 heat ranges colder than stock and may have a place in a 1,000 rwhp engine. Something with a lot of boost. It's a bigger problem to run a heat range that's too hot. The downside to too cold is the spark plug will be unable to properly self-clean by burning off carbon deposits and fouls out sooner. If it the heat range is too hot, your engine could experience detonation, pre-ignition or power loss.