Ok... What boost and plug gap are you running?

[TT/Ameasap]

Did a little research and The general consensus seems to be running a tighter gap helps. But... Some guys are running high boost and .030-.035 or more and have no problems. The LS boosted guys are running really tight gaps to .018-.020.
What are you running for gap and boost?

 

[BEATAV8]

With a stock coil, .028"

With the TR6 / GM truck coil, .032-.035", or even wider depending upon plug design. Plugs with a cut back strap don't really need any wider of a gap since the spark is "unshrouded".

 

[TURBOPOWERED68]

With my OE stuff i was at 28

 

[Rafs-T-Type]

.028 with anywhere from 26-32#'s

 

[dandaman]

.022 but only @15psi on E98. Most likely be the same as I wind up the boost.

 

[BARRACUDA1968]

I'm about to install new plugs today. Plan on running 18/20 boost on street and maybe up to 24/25 at the track.

I did some reading yesterday on here and 32 gap seemed pretty popular.

I'm pretty sure I'm running a stock GM coil. Not sure how to tell?

Surprised to see these gaps so low.

 

[TT/Ameasap]

I'm about to install new plugs today. Plan on running 18/20 boost on street and maybe up to 24/25 at the track.

I did some reading yesterday on here and 32 gap seemed pretty popular.

I'm pretty sure I'm running a stock GM coil. Not sure how to tell?

Surprised to see these gaps so low.

Were talking E85.

 

[its2qik]

.026 @ 25lbs

 

[BARRACUDA1968]

I missed that part! I always click the what's new tab so I didn't catch the E85 section.

 

[TurboBuick86]

With an MSD .025 gap running @ 36-40 psi.


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[BIGPSI]

autolite #23@.030 @30psi

 

[Flyin Brian]

Delco R43TS at .032" and 25 psi

 

[TT/Ameasap]

I went all the way down to .020-.022 @ 18psi No more spark blow out.

 

[TurboBuick86]

That's cause i think ur just using the stock coils only.


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[BIGPSI]

I went all the way down to .020-.022 @ 18psi No more spark blow out.

Sounds like you have other problems,no way you should have spark blow out @ 18psi

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[TT/Ameasap]

Sounds like you have other problems,no way you should have spark blow out @ 18psi

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oh, ok.

 

[BIGPSI]

oh, ok.

Never heard anyone running that weak on boost having problems

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[BIGPSI]

Hell i run more than that on 93 octane

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[jasjamz]

Plug wires may be bad

 

[TurboBuick86]

Yep!


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