Spark plug gap on 331 stroker engine

moponys · 09-28-2004, 01:03 AM

What should the spark plug gap be on a 10:1 compression engine? I have a Crane Hi-6 ignition and coil too.

I'm thinking I should start at around .045.

They're currently gapped at .054 and I'm having a slight misfire at around 6100 rpms.

jonnyk · 09-28-2004, 09:18 AM

Sounds about right to me. You could slowly try gapping them down - maybe 0.050" first? More is better so it'd be nice to keep it big.

I'm actually running 0.045" with boost, with a Hi-6R and LX92 coil, but I'm only at 8.4:1 static...

09-28-2004, 01:03 AM	#1
moponys Registered Member Join Date: May 2001 Location: Antioch, CA 94521 Posts: 181	Spark plug gap on 331 stroker engine What should the spark plug gap be on a 10:1 compression engine? I have a Crane Hi-6 ignition and coil too. I'm thinking I should start at around .045. They're currently gapped at .054 and I'm having a slight misfire at around 6100 rpms. __________________ N/A 94 GT vert w/aode...12.19 @110 w1.67 60' Some bolt ons

09-28-2004, 09:18 AM	#2
jonnyk Being stroked is great Join Date: Oct 1998 Location: Alberta, Canada Posts: 772	Sounds about right to me. You could slowly try gapping them down - maybe 0.050" first? More is better so it'd be nice to keep it big. I'm actually running 0.045" with boost, with a Hi-6R and LX92 coil, but I'm only at 8.4:1 static... __________________ Novi 2000 now spinning off the snout of the 331... Mods Pics

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