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Plugs for e85 fuel injected boosted smallblock

Posted By: 1mean340

Plugs for e85 fuel injected boosted smallblock - 07/04/17 02:43 AM

Can anyone give me a good plug recommendation for a smallblovk 340 with w2 econo heads, e85 fed FITECH fuel injection and about 8PSI of boost to start? Did some research and came across a few different ones but there always seemed to be one thing off from what I wanted when searching through part numbers (non-resister type, not recessed, etc...). Thanks!
Posted By: 10sec.dart

Re: Plugs for e85 fuel injected boosted smallblock - 07/06/17 03:25 AM

ngk-8 race plugs, part number r5671a-8 stock # 4554
Posted By: 1mean340

Re: Plugs for e85 fuel injected boosted smallblock - 07/07/17 05:31 AM

10.secdarr, I came across that plug a few times doing some web browsing but what concerned me is 1) it is a non resister plug and 2) it doesn't have a recessed tip. Think this will work with a fitech EFI system and boost? I don't have much experience with spec'ing out plugs for boosted EFI applications but I have always heard non resistor was a no no for EFI and it's better to use a recessed tip for boost.
Posted By: 1mean340

Re: Plugs for e85 fuel injected boosted smallblock - 07/07/17 05:38 AM

And fwiw I'm running an MSD box with the FITECH and am using a new set of MSd 8.5 super conductor wires. They supposedly have good EMI suppression so hoping maybe that'll fix the issue of having a non resistor plug?
Posted By: Cab_Burge

Re: Plugs for e85 fuel injected boosted smallblock - 07/07/17 09:03 AM

Does the Fitech system need resistor plugs and low resistance low EMF and RMI plug wires ?
If not one of them as a resistor components should work, correct?
Posted By: dvw

Re: Plugs for e85 fuel injected boosted smallblock - 07/07/17 11:19 AM

-8 is a little hot unless it's low boost. I would start with -9
Doug
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