BBC spark plug gap help
I am currently running .044 on NGK R44 or R45 have pro comp aluminum heads 10.5:1 comp. Accel high performance HEI distributor with accel 8.5mm plug wires. I was gapped at .050 and ran .6 slower than with current gap. Question is will I see better et with a smaller gap? Also looking to get a larger carb. Any opinions?
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I ran my big block at0.35 it was 9.5 to1 with iron heads and a 850 carb
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I'd say .040 but it has a lot to do with Compression ratios, Combustion Chamber configuration, and timing, as well as what fuel you're using . .
Just another one of those things that make each of our engines "a little different" . . |
I'll gap my spare plugs at .040 and swap them out at the track to see what happens. I'm running 110 fuel only.
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Re: BBC spark plug gap help
Originally Posted by duby05
I am currently running .044 on NGK R44 or R45 have pro comp aluminum heads 10.5:1 comp. Accel high performance HEI distributor with accel 8.5mm plug wires. I was gapped at .050 and ran .6 slower than with current gap. Question is will I see better et with a smaller gap? Also looking to get a larger carb. Any opinions?
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Nope I meant .6...first pass ran a xx.61 something didn't feel right and only thing that had been changed was plug gap, pulled plugs re gapped and ran xx.01
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I think you may have had a diffrent problem that was fix when you pulled the plugs like a bad connection/ connections on your plug wires. how much did your MPH drop off?
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Only a few mph
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Originally Posted by duby05
Only a few mph
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All is well right now. Going to see what a .040 gap does for me
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