spark plug heat range

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spark plug heat range

Post  deliveredfast on August 27th 2014, 8:38 pm

What would be a good or ideal spark plug range for the following engine combo running on all motor only? I am currently ngk #9. Im wondering if a #8 will give me a performance gain Laughing

598ci
14.5 to 1 comp
1600 cfm carb
crank trigger
a460 heads/intake
2 1/4 headers
34 degrees of timing
2 speed power glide. 1.80 1st gear
4.30 rear gear
2780lbs with driver
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Re: spark plug heat range

Post  Lem Evans on August 27th 2014, 8:43 pm

I doubt it would.

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Re: spark plug heat range

Post  richter69 on August 27th 2014, 9:14 pm

time for that nawws it sounds like...... but id put a 10 in it first.
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Re: spark plug heat range

Post  psfracer on August 28th 2014, 2:00 am

I ran NGK -9 on motor and -10 on a 200 shot.
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