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DRR Sportsman |
so I normally would run the NGK R5671A-7 in my old motor was just a conventional headed 13.1 comp BBC I recently bought a 584 with -20 heads and the motor has R5671A-9 in it which is a cold plug this is a 15.1 NA deal. what are guys running with similar set ups | ||
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DRR Pro |
Well you are running 7s at 13:1, I am running 8s at 14:1 and they have 9s in it at 15:1 so I am kind of thinking that is about right? Lots other factors aside of comp ratio though. Better to be too cold than too hot to start. | |||
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DRR S/Pro |
Gas or alcohol? 272" Spitzer 540 Chevy The Blower Shop XR1 FTI XPM Series Converter FTI Level 6 Powerglide 3.69@199 .916 60' 2017 Bradenton Heads Up Madness Open Outlaw Champ 2018 PDRA T/D #5 2019 PDRA T/D #2 2020 Retired From T/D Competition.... 2020 Bradenton NMCA Hemi Shootout Winner 2021 getting back into bracket racing with a Gen3 Hemi powered 87 Cutlass. | |||
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DRR Pro |
i ran 8 in my 598 on alky ,15/1 honesty is the best policy,insanity is a better deffense 1.036, 6.16@ 224 | |||
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DRR Elite |
-9 with my 16:1 648 on gas -9 with my 15.4:1 622 on gas | |||
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DRR Sportsman |
gas | |||
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DRR S/Pro |
I vote for 9's also 272" Spitzer 540 Chevy The Blower Shop XR1 FTI XPM Series Converter FTI Level 6 Powerglide 3.69@199 .916 60' 2017 Bradenton Heads Up Madness Open Outlaw Champ 2018 PDRA T/D #5 2019 PDRA T/D #2 2020 Retired From T/D Competition.... 2020 Bradenton NMCA Hemi Shootout Winner 2021 getting back into bracket racing with a Gen3 Hemi powered 87 Cutlass. | |||
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DRR Trophy |
We have always run -9 in a 15:1 to 15.5:1 24* BBC, Gas or Alky. I suppose on gas we could've gotten away with -8, but they never gave us an issue so we left it. Nick Craig 1971 Camaro Split Bumper 376ci LS3 | |||
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DRR S/Pro |
Can I mail in my vote??????? | |||
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DRR S/Pro |
^^^^^^ Illegitimi non carborundum | |||
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DRR Sportsman |
THEY MAY HAVE TO STOP TALLYING THEM OVER NIGHT AND WAIT FOR EXTRA'S TO SHOW UP. Michael Frizie ET 2471 | |||
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DRR S/Pro |
And all this time we're all voting for NGK's, now after overnight and a Autolite won....... 272" Spitzer 540 Chevy The Blower Shop XR1 FTI XPM Series Converter FTI Level 6 Powerglide 3.69@199 .916 60' 2017 Bradenton Heads Up Madness Open Outlaw Champ 2018 PDRA T/D #5 2019 PDRA T/D #2 2020 Retired From T/D Competition.... 2020 Bradenton NMCA Hemi Shootout Winner 2021 getting back into bracket racing with a Gen3 Hemi powered 87 Cutlass. | |||
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DRR Pro |
2000 spark plugs..... | |||
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DRR Pro |
Does or Has anyone used the Autolite AR3933 which is the equivalent to the NGK R5671A-9 ? Opinion? | |||
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DRR Elite |
Junk, used them years ago and Wouldn’t make 100 before developing a miss. Poor quality control. Sunset Racecraft and other engine builders experienced the same and stopped using them. | |||
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DRR Top Comp |
9s in everything from injected alky at 12:1 to injected nitro at 14/8:1 including blown alky 540 ci @12.5:1. Very versatile. You can always start with one run and get baseline make swap for the weekend and see how motor likes it. America home of free. Brought to you by 2nd amendment. | |||
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DRR Sportsman |
9s in my 582 20 degree engine | |||
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DRR Pro |
Running 9's in my 16.5:1 665" on alky. Have experienced some plug issues including misfires on NGK, but mostly trouble free. Use them primarily for tuning then switch to the Autolites. Autolites last longer and I've had zero issues with them. NGK are easier to read though.... Mark Goulette Owner/Driver of the Livin' The Dream Racing dragster www.livinthedreamracing.com "Speed kills but it's better than going slow!" Authorized Amsoil Retailer | |||
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DRR Pro |
You're using Autolite AR3933 ? I don't read plugs, just replace. I read my DA and ET slip. | |||
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DRR Trophy |
As on another thread always ohm check NGK plugs some are -open The difference between ignorance and stupidity. Ignorance is lack of knowledge. Stupidity is the inability to learn. Don't be stupid | |||
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